Faculty of Mathematics and Informatics
24 Naugarduko st., LT-03225 Vilnius
47 Didlaukios st., LT-08303 Vilnius
4 Akademijos st., LT-08412 Vilnius
Tel. 219 3050
E-mail:
Dean 鈥 Prof. Dr Paulius Drungilas
STAFF
153 teachers (incl. 106 holding research degree), 50 research fellows (incl. 46 holding research degree), 72 doctoral students.
INSTITUTES OF THE FACULTY
Institute of Data Science and Digital Technologies
Institute of Computer Science
Institute of Mathematics
Institute of Applied Mathematics
RESEARCH AREAS
鈥 Integrated Development of Mathematics, Informatics, and Information Technologies for The Knowledge Society Advanced Products and Services
鈥 Informatics
鈥 Operational Research
Informatics Engineering: Signal Analysis, Machine Learning, Deep Neural Networks
鈥 Blockchain Technologies
鈥 Fundamental Mathematics: Number Theory, Probability Theory and Stochastic Analysis, Risk Theory, Theory of Differential Equations, Functional Analysis
鈥 Applied Mathematics: Methods of Mathematical Statistics, Mathematical Modelling, Finance and Insurance Mathematics, Modern Elementary Mathematics and Didactics, Econometrics, Time Series Analysis, Mathematical Optimisation
DOCTORAL DISSERTATIONS MAINTAINED IN 2022
V. Jusevi膷ius. Research and development of an open-source algebraic modeling and mathematical optimization system
E. Zikarien臈. Spatial Contextual Classification Based on Conditional Distributions Belonging to Elliptical and Exponential Families
V. Luk拧ien臈. Approximation of analytic functions by shifts of certain zeta-functions.
G. Mongirdait臈. Weak approximations of the Wright鈥揊isher process and related problems.
J. Sprindys. Asymptotic analysis of heavy tailed distributions.
MAIN CONFERENCES ORGANIZED IN 2022
13th Conference 鈥淒ata Analysis Methods for Software Systems鈥, December 1鈥3, 2022, Druskininkai, Lithuania
12th International Doctoral Consortium 鈥淚nformatics Engineering Education Research鈥, December 4鈥8, 2022, Druskininkai, Lithuania
National conference 鈥淟XIII conference of Lithuanian Mathematical Society鈥, June 16鈥17, 2022, Kaunas, Lithuania.
MAIN SCIENTIFIC ACHIEVEMENTS IN 2022
It was shown that the algorithm based on the convolutional neural network not only enables the detection of damage to biological membranes but also predicts the electrochemical response (computed by the finite element method) of these membranes.
A framework was developed for selecting the most suitable blockchain consensus protocols depending on the identified criteria, priorities, and other requirements by incorporating Multi-Criteria Decision-Making (MCDM) techniques.
The transcendency of some constants that occur as limits of sequences arising from polynomial iterations was established. This implies that some constants from Sloane's On-Line Encyclopedia of Integer Sequences are irrational (as known before) and transcendental.
鈥
INSTITUTE OF DATA SCIENCE AND DIGITAL TECHNOLOGIES
4 Akademijos, LT-08412 Vilnius
Tel. (+370) 210 9300
E-mail:
Director 鈥 Prof. Habil. Dr Gintautas Dzemyda
GROUPS OF THE INSTITUTE
Blockchain Technologies Group
Cognitive Computing Group
Cyber-Social Systems Engineering Group
Education Systems Group
Global Optimization Group
Image and Signal Analysis Group
Intelligent Technologies Research Group
Statistics and Probability Group
Artificial Intelligence Laboratory
RESEARCH AREAS
鈥 The integrated development of mathematics, informatics and information technologies for The Knowledge Society Advanced Products and Services
4 Akademijos, LT-08663 Vilnius
Tel. (+370) 219 3299
E-mail:
Head 鈥 Prof. Dr Remigijus Paulavi膷ius
STAFF
Research professor: Prof. Dr R. Paulavi膷ius.
Senior researchers: Dr E. Filatovas, Dr V. Medvedev, Dr F. J. Orts.
Researcher: Dr L. Stripinis.
Lecturer: Dr A. Igumenov.
Junior researcher: Mindaugas Juodis.
Doctoral students: S. Grigaitis, J. Arsenjeva, A. Bud啪ys.
RESEARCH INTERESTS
鈥 Blockchain technologies
鈥 Global optimisation
鈥 Optimisation software
鈥 Multi-objective optimisation
鈥 High-performance computing
鈥 Artificial intelligence
鈥 Image processing
鈥 Big Data
鈥 Quantum computing
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Research and Development of Public, Private, and Consortium-Type Blockchain Systems. Prof. Dr R. Paulavi膷ius. 2018鈥2023.
The project involved an investigation of the most popular and recent consensus algorithms, such as Proof of Work (PoW), Proof of Property (PoS), Proof of Authorship (PoA), Proof of Importance (PoI), Delegated Byzantium Fault Tolerance (dBFT), etc. A framework was created for selecting the most suitable consensus protocols depending on the identified criteria, priorities, and other requirements by incorporating Multi-Criteria Decision-Making (MCDM) techniques. Overview and empirical analysis of various metrics to evaluate the decentralisation of the blockchain were presented. New derivative-free optimisation software for operational research was created. The project also involved the investigation and application of Neural Architecture Search techniques for designing well-performing Convolutional Neural Networks for image segmentation and object recognition in satellite imagery. The project also aimed to develop fault-tolerant carry lookahead adders that improve the cost of quantum gates and qubits.
Main publications:
1. E. Filatovas, M. Marcozzi, L. Mostarda, R. Paulavi膷ius (2022) A MCDM-based framework for blockchain consensus protocol selection. Expert Systems With Applications, 204, DOI: 10.1016/j.eswa.2022.117609
2. L. Stripinis, R. Paulavi膷ius (2022) DIRECTGO: A new DIRECT-type MATLAB toolbox for derivative-free global optimization. ACM Transactions on Mathematical Software, p. 1-45, DOI: 10.1145/3559755.
3. L. Stripinis, R. Paulavi膷ius (2022) An empirical study of various candidate selection and partitioning techniques in the DIRECT framework. Journal of Global Optimization, p. 1-31, DOI: 10.1007/s10898-022-01185-5.
4. F. Orts, G. Ortega, E. Filatovas, E.M. Garz贸n (2022). Implementation of three efficient 4-digit fault-tolerant quantum carry lookahead adders. The Journal of Supercomputing, p. 1-19, DOI: 10.1007/s11227-022-04401-x.
National Research Projects
Resolving Research Reproducibility Problems in Artificial Intelligence Using Blockchain Technologies. (No. P-MIP-21-196). The Research Council of Lithuania. Dr E. Filatovas. 2021鈥2024.
Today, various Artificial Intelligence techniques have solved most real-world challenging decision problems (image analysis, voice and face recognition, planning, scheduling, routing, etc.). However, Artificial Intelligence research domains (as well as other research fields) face a Reproducibility Crisis. Researchers need help reproducing many key results due to the disconnection between publications and the codes used, the underlying data, parameter settings, etc., as they lack critical details. Solutions that improve code accessibility, data provenance tracking, research transparency, auditing of obtained results, and trust in Artificial Intelligence domains can significantly accelerate algorithm and model development, validation, and transition into real-world applications. Thanks to the features provided by Blockchain Technology, significant progress in resolving the Reproducibility Crisis and full reproducibility can be achieved.
In this context, the project's main objective is to contribute to resolving research reproducibility problems in the Artificial Intelligence field and enhance the research cycle by developing a conceptual model of a blockchain-based decentralised platform, which would be efficient, scalable, interoperable, and adaptable in various Artificial Intelligence research domains.
Main publications:
1. F. Orts, G. Ortega, E. Filatovas, E.M. Garz贸n (2022). Implementation of three efficient 4-digit fault-tolerant quantum carry lookahead adders. The Journal of Supercomputing, p. 1-19, DOI: 10.1007/s11227-022-04401-x.
2. E. Filatovas, M. Marcozzi, L. Mostarda, R. Paulavi膷ius (2022) A MCDM-based framework for blockchain consensus protocol selection. Expert Systems With Applications, 204, DOI: 10.1016/j.eswa.2022.117609
International Research Projects
High-Performance Computing to Optimise Intensity Modulated Radiotherapy Schedules. (UAL18-TIC-A020-B). Supported by the Andalusian Board, Spain. E. Filatovas represented the Lithuanian partner in the project. 2019鈥2022.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Imperial College London (UK)
Universidad de Almer铆a (Spain)
Cardiff University (UK)
Systems Research Institute, Polish Academy of Sciences (Poland)
The Kharkiv National University of Radio Electronics, Computer Science Faculty (Ukraine)
Octeract Optimisation Intelligence (UK)
OTHER SCIENTIFIC ACTIVITIES
Dr R. Paulavi膷ius
鈥 member of the Young Academy of the Lithuanian Academy of Sciences;
鈥 member of the Artificial Intelligence and Digital Transformation working group of the Arqus University Alliance;
鈥 topic editor of Mathematics;
鈥 affiliate member of the European Network of Excellence on High Performance and Embedded Architecture and Compilation (HiPEAC), www.hipeac.net;
鈥 member of the Lithuanian Computer Society (LIKS);
Dr E. Filatovas
鈥 member of the International Society on Multiple Criteria Decision Making (MCDM);
鈥 member of the Lithuanian Computer Society (LIKS);
鈥 member of Program/Scientific Committees:
鈼 BLOCKCHAIN'22: 4th International Congress on Blockchain and Applications
鈥 Reviewer in the following scientific journals:
o Expert systems with Applications
o IEEE Transactions on Systems, Man and Cybernetics: Systems
o Journal of Supercomputing
o Informatica
Dr V. Medvedev
鈥 member of Lithuanian Computer Society,
鈥 member of Lithuanian Mathematical Society,
鈥 member of Program/Scientific Committees:
鈼 program committee member of the International Workshop on Secure Mobile Cloud Computing (IWoSeMC-20, IWoSeMC-2022),
鈼 organizing committee member of the Conference on Data Analysis Methods for Software Systems (DAMSS), Druskininkai, Lithuania,
Dr F. J. Orts
鈥
Dr L. Stripinis
鈥 project researcher in National Research Project (P-MIP-21-196)
鈥 Reviewer in the following scientific journals:
o Journal of Global Optimization
o Engineering Optimization
o Mathematics
Dr A. Igumenov
鈥 member of Lithuanian Computer Society,
4 Akademijos, LT-08663 Vilnius
Tel. (+370) 210 9300
E-mail:
Head 鈥 Prof. Habil. Dr Gintautas Dzemyda
STAFF
Principal researchers: Prof. Habil. Dr G. Dzemyda, Prof. Dr A. Jakaitien臈, Prof. Dr O. Kurasova, Prof. Dr Audris Mockus
Principal researchers of projects: Dr R. Dukynait臈, Dr G. Dzemydait臈, Dr G. A. Melnik-Leroy, Dr S. Rai啪ien臈, Prof. habil. Dr 沤elvys.
Researchers: Dr R. Karbauskait臈, Dr G. A. Melnik-Leroy, Dr A. Usovait臈, Dr M. Sabaliauskas, Dr D. Stumbrien臈.
Junior researchers: A. 艩ubonien臈, V. Tie拧is, J. Vaitekaitis.
Professors: Prof. Dr Du膷inskas, Prof. Habil. Dr G. Dzemyda, Prof. Dr O. Kurasova.
Assistants: Dr M. Sabaliauskas, Dr D. Stumbrien臈, Dr L. Ringien臈.
Junior assistants: Dr I. Katin, 沤. Vai拧noras.
Other staff: R. Gipi拧kis, L. Mikalauskien臈, V. Palkevi膷, Dr L. Ringien臈, Dr M. Sabaliauskas, V. Tie拧is.
Doctoral students: D. Breskuvien臈, V. Bulavas, R. Gipi拧kis, P. Gud啪ius, M. Karaliut臈, G. Krasauskas, N. Kondrat, M. Motiejauskas, I. Poc臈, R. Puronait臈, 沤. Vai拧noras, R. Vai拧nor臈.
RESEARCH INTERESTS
鈥 Artificial neural networks
鈥 Big data
鈥 Bioinformatics
鈥 Data mining
鈥 Deep learning
鈥 Global optimisation methods
鈥 Multi-objective optimisation
鈥 Image analysis, feature detection, image reconstruction, medical image processing
鈥 Internet data mining
鈥 Fractal dimensionality
鈥 Local optimisation methods
鈥 Machine learning
鈥 Medical data analysis and decision support
鈥 Multiple criteria decision support
鈥 Operations research
鈥 Optimal control applications
鈥 Parallel computing
鈥 Simulation models in epidemiology, education, economics, and energy with uncertainty
鈥 Statistical simulation
鈥 Stochastic programming
鈥 Swarm intelligence
鈥 Visualisation of multidimensional data
鈥 Web service development
鈥 Psychology in multiple criteria decisions
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Developing Cognitive Computing Capabilities for Data Visualisation, Image Analysis and Decision-Making. Prof. Dr (HP) G. Dzemyda, Prof. Dr O. Kurasova. 2020鈥2022.
Main publications:
1. Stumbrien臈, Dovil臈; Jakaitien臈, Audron臈; 沤elvys, Rimantas; 沤ilinskas, Julius; Dukynait臈, Rita. Efficiency and effectiveness analysis based on educational inclusion and fairness of European countries // Socio-economic planning sciences. New York : Elsevier. ISSN 0038-0121. eISSN 1873-6041. 2022, vol. 8, part. B, art. no. 101293, p. [1-17]. DOI: 10.1016/j.seps.2022.101293. [DB: Scopus; Science Citation Index Expanded (Web of Science)].
2. Daranda, A., Dzemyda, G. (2023). Reinforcement learning strategies for vessel navigation. Integrated Computer Aided Engineering, vol. 30, no. 1, pp. 53-66, 2023, DOI: Published: 15 August 2022 (Web of Science). DOI:
3. Dzemyda, Gintautas; Sabaliauskas, Martynas. Geometric multidimensional scaling: efficient approach for data dimensionality reduction // Journal of global optimization. Dordrecht : Springer Nature. ISSN 0925-5001. eISSN 1573-2916. 2022, first published online, p. [1-25]. DOI: 10.1007/s10898-022-01190-8. [DB: Scopus; Science Citation Index Expanded.
4. Melnik-Leroy, Gerda Ana; Bernatavi膷ien臈, Jolita; Korvel, Gra啪ina; Navickas, Gediminas; Tamulevi膷ius, Gintautas; Treigys, Povilas. An overview of Lithuanian intonation: a linguistic and modelling perspective // Informatica. Vilnius : Vilniaus universiteto leidykla. ISSN 0868-4952. eISSN 1822-8844. 2022, first published online, p. [1-38]. DOI: 10.15388/22-INFOR502. [DB: Scopus; Science Citation Index Expanded (Web of Science)].
National Research Projects
Geometric Method for Solving the Problem of Multidimensional Scaling. (No. MSF-LMT-4). The Research Council of Lithuania. Prof. Dr (HP) G. Dzemyda. 2019鈥2022.
The main goal of the project is to consider the stress function and multidimensional scaling, in general, from the geometric point of view and to develop the so-called Geometric MDS that creates the basis for a new class of algorithms to minimise the MDS stress. The new interpretation of the stress allows the proper step size to be found, and the descent direction forwards the minimum of the stress function analytically if we consider and move a separate point of the projected space.
Main publications:
1. Dzemyda, Gintautas; Sabaliauskas, Martynas. Geometric multidimensional scaling: efficient approach for data dimensionality reduction // Journal of global optimization. Dordrecht : Springer Nature. ISSN 0925-5001. eISSN 1573-2916. 2022, first published online, p. [1-25]. DOI: 10.1007/s10898-022-01190-8. [DB: Scopus; Science Citation Index Expanded (Web of Science)]
2. Dzemyda, Gintautas; Sabaliauskas, Martynas; Medvedev, Viktor. Geometric MDS performance for large data dimensionality reduction and visualization // Informatica. Vilnius : Vilniaus universiteto leidykla. ISSN 0868-4952. eISSN 1822-8844. 2022, vol. 33, no. 2, p. 299-320. DOI: 10.15388/22-INFOR491. [DB: Scopus; Science Citation Index Expanded (Web of Science)]
Effectiveness and Efficiency Analysis of Education Systems in EU Countries Employing Secondary Big Data (EFECTAS). (No. DOTSUT-39 (09.3.3-LMT-K-712-01-0018) / LSS-250000-57). The Research Council of Lithuania. Dr A. Jakaitien臈. 2018鈥2022.
The main idea of the project is to assess the factors influencing the effectiveness and efficiency of the EU education systems and to develop effectiveness and efficiency measuring instruments in order to implement sound evidence-based educational policy.The focus of the analysis was on two types of centralised national examinations (the 10th-grade tests and the Matura examination) that have been carried out in Lithuania for two decades. The purpose of the research is to analyse the assessments of mathematics and the Lithuanian language and literature for the entire Lithuanian secondary school population that do not have sampling errors while considering the factors of location, school ownership, and gender as important indicators when judging educational effectiveness in terms of quality and equity. We analyse the results of the 10th-grade tests for the 2011鈥2015 period and the results of the same cohorts participating in the Matura examination. The conclusions drawn from national assessment data are somewhat different from international data; thus, one cannot neglect national information for the development of educational policy. The variables analysed in the analysis have limited predictive power for achievements in both mathematics and the Lithuanian language and literature, and further analysis is required.
Main publications:
1. Stumbrien臈, Dovil臈; Jakaitien臈, Audron臈; 沤elvys, Rimantas; 沤ilinskas, Julius; Dukynait臈, Rita. Efficiency and effectiveness analysis based on educational inclusion and fairness of European countries // Socio-economic planning sciences. New York : Elsevier. ISSN 0038-0121. eISSN 1873-6041. 2022, vol. 8, part. B, art. no. 101293, p. [1-17]. DOI: 10.1016/j.seps.2022.101293.
2. Jakaitien臈, Audron臈; 沤elvys, Rimantas; Rai啪ien臈, Saul臈; Dukynait臈, Rita; Stumbrien臈, Dovil臈; Vaitekaitis, Jogaila; Ringien臈, Laura; 沤ilinskas, Julius; 沤ilinskas, Antanas. (Ne)i拧matuojamas 拧vietimo efektyvumas ir na拧umas. Vilnius : Vilniaus universiteto leidykla, 2022. 538 p. ISBN 9786090707197. eISBN 9786090707203.
Correcting Misperceptions of COVID-19 Data: An Innovative E-platform CognitiveSTATS for Training the Statistical Intuitions of the General Public. (Grant No. 01.2.2-LMT-K-718-05-0042). The Research Council of Lithuania. Dr G. A. Melnik-Leroy. 2021/11鈥2023/09.
The objective of this project is to create a prototype of the innovative e-platform for statistical intuition training of the general public, CognitiveSTATS, which will help to correct misperceptions of COVID-19 data. In order to implement this project, two activities have been planned: 1. to carry out scientific research and experiments in order to identify the most important problems in COVID-19 data interpretation (statistical and/or cognitive) and the most effective ways of training statistical intuitions; 2. based on the results of this research, to develop and test a prototype of a statistical intuition training platform for the general public. The platform CognitiveSTATS will help people understand some crucial phenomena inherent to the pandemic situation (the spread of the infection, the effectiveness of safety measures and vaccines, the probability of getting infected, the economic consequences of the pandemic etc.). The project also aims to help members of the general public to evaluate data and information more critically, especially when spreading it in the public sphere, including sharing it on social media. In order to ensure the effectiveness and attractiveness of the platform, three innovative milestones will be used for its development: evidence from cognitive science, the principles of gamification, and visualisations of COVID-19 data. In this way, the project aims at educating society, training their skills, and as a consequence, significantly influencing the attitudes and behaviour of the public. The research carried out during the project, and the developed prototype of the e-platform will be presented in international-level scientific articles. Given that the project idea is adaptable to future pandemics or crisis situations and that population attitudes and behaviour are essential factors in managing any emergency situation, CognitiveSTATS has a long-term perspective and can be widely applied in a data-driven world.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
University of Almeria (Spain)
University College London (UK)
Bar-Ilan University (Israel)
University of Ferrara (Italy)
Southwestern University of Finance and Economics (China)
Belarus State University (Belorussia)
University of Calabria (Italy)
National Cancer Institute of Lithuania
Hospital of Lithuanian University of Health Sciences Kauno klinikos (Lithuania)
Maribor University (Slovenia)
91桃色 Hospital Santaros Kinikos (Lithuania)
Ecole Normale Sup茅rieure (France)
OTHER RESEARCH ACTIVITIES
Prof. Habil. Dr G. Dzemyda
鈥 member of Lithuanian Academy of Science,
鈥 recently elected as the head of Division of Technical Sciences of the Lithuanian Academy of Sciences;
鈥 member of programme committees of the international conferences:
o The WorldCist'21 - 9th World Conference on Information Systems and Technologies;
o ESSE 2021, 2nd European Symposium on Software Engineering;
o IEEE INISTA 2021, International Conference on INnovations in Intelligent SysTems and Applications (INISTA);
o SENSORNETS 2021 : 10th International Conference on Sensor Networks;
鈥 chairman of the 12th International Workshop Data Analysis Methods for Software Systems, Druskininkai, Lithuania, 2021,
鈥 editor-in-Chief of
鈥 Baltic Journal of Modern Computing
鈥 International journal Informatica (IOSPress/VU),
鈥 editorial board member of 8 international journals: Financial Innovation; International Journal of Computers; Communications and Control; Applied Computer Systems; Informatics in Education; Journal of Civil Engineering and Management; Nonlinear Analysis: Modelling and Control; Mathematics and Informatics. Journal of the Belarusian State University;
鈥 member of IFIP Technical Committee 12 Artificial Intelligence;
鈥 member of Lithuanian Computer Society,
鈥 member of Lithuanian Mathematical Society,
鈥 member of Lithuanian Operational Research Society, .
Prof. Dr O. Kurasova
鈥 member of editorial boards of international journals:
o Nonlinear Analysis: Modelling and Control, ,
o Information Technology and Control,
o Baltic Journal of Modern Computing, ,
o Computational Science and Techniques, ,
o Informatics,
鈥 member of Association for Computing Machinery, ,
鈥 member of IEEE, ,
鈥 member of Association of European Operational Research Societies
鈥 member of Lithuanian Mathematical Society, ,
鈥 member of Lithuanian Operational Research Society,
鈥 Chairwoman of the doctoral committee of Informatics, 91桃色.
鈥 Member of the doctoral committee of Informatics Engineering, 91桃色.
鈥 Chairwoman of the doctoral committee of Informatics, 91桃色.
鈥 Member of the doctoral committee of Informatics Engineering, 91桃色.
Prof. Dr A. Jakaitien臈
鈥 member of Lithuanian Mathematical Society,
鈥 board member of Lithuanian Statistics Society,
鈥 member of International Biometric Association,
鈥 country representative of International Biometric Association in Nord Baltic Region,
鈥 country representative at European Statistical Advisory Committee,
Dr R. Karbauskait臈
鈥 managing editor of Informatica (IOSPress/VU),
Prof. Dr K. Du膷inskas
鈥 board member of Lithuanian Mathematical Society,
鈥 board member of Lithuanian Statistics Society,
鈥 member of International Biometric Association,
Dr G. A. Melnik-Leroy
鈥 member of the Cognitive Science Society
鈥 member of the programme committee of the international conference: New Sounds 2021
Doctoral student R. Puronait臈
鈥 member of the International Society for Clinical Biostatistics,
CYBER-SOCIAL SYSTEMS ENGINEERING GROUP
4 Akademijos, LT-08663 Vilnius
Tel. (+370) 210 9306
E-mail:
www:
Head 鈥 Prof. Dr Saulius Gudas
STAFF
Professor: Prof. Dr Saulius Gudas.
Senior research fellow: Prof. Dr Dal臈 Dzemydien臈 (till 31.08.2022).
Research fellows: Dr Romas Alonderis, Assoc. Prof. Dr Audron臈 Lupeikien臈, Dr Saulius Maskeli奴nas.
Assistant professors: Dr Jolanta Miliauskait臈, Dr Asta Slotkien臈.
Assistant research fellow: Laima Paliulionien臈.
Affiliated researchers: Prof. Habil. Dr Stasys Jukna, Assoc. Prof. Habil. Dr Regimantas Pliu拧kevi膷ius, Assoc. Prof. Dr Aida Pliu拧kevi膷ien臈.
Doctoral students: Karolis Noreika.
RESEARCH INTERESTS
鈥 Causality-Driven Business Process Modelling and Enterprise Application Software (EAS) Engineering Methods:
o Foundations of causality-based enterprise software engineering;
o Integration of causal models in the MDA / MDD and Agile processes;
o Causal modelling of enterprise management activities and business processes;
o Model-based application development (MBD) methods for different types of domains (enterprises, the Internet of Things, smart systems, etc.);
鈥 Mathematical logic:
o Automated deduction;
o Knowledge analysis methods;
o Deductive systems.
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Research of Cyber-Social Systems and Development of Engineering Methods at the Intersection of Cyber-Physical and Cyber-Social Systems. Prof. Dr S. Gudas (leader), Dr R. Alonderis, Prof. Dr D. Dzemydien臈, Assoc. Prof. Dr A. Lupeikien臈, Dr S. Maskeli奴nas, Dr J. Miliauskait臈, Dr A. Slotkien臈, L. Paliulionien臈, Affil. Assoc. Prof. Dr (HP) R. Pliu拧kevi膷ius, Affil. Assoc. Prof. Dr A. Pliu拧kevi膷ien臈, Affil. Dr (HP) S. Jukna, doctoral (PhD) student K. Noreika. 2021鈥2023.
Main results obtained in 2022:
鈥 Application of domain causality modelling (S. Gudas, K. Noreika, A. Lupeikien臈):
A causal model of Agile project management using a management transaction (MT) concept was developed. The notion of the space of processes was used to identify the location of MTs along the axes of aggregation, generalisation, and time. A taxonomy of the coordination meta-types and types was developed using the identifiers of the MTs.
The direction of development of Enterprise Resource Planning (ERP) systems and Business Process Management Suites (BPMS) from the point of view of business requirements is determined for Industry 4.0 and Industry 5.0.
鈥 Classes of sequents of linear discrete tense logic have been established. A backward proof-search of any sequent in any of the classes does not require global condition checks when the proof-search is performed using earlier obtained loop-type sequent calculus. (R. Alonderis, R. Pliu拧kevi膷ius, A. Pliu拧kevi膷ien臈).
Main publications:
1. Gudas, Saulius.; Noreika, Karolis. Causal Interactions in Agile Application Development. Mathematics 2022, 10, 1497. .
2. Szel膮gowski, Marek; Lupeikien臈, Audron臈; Berniak-Wo藕ny, Justyna. Drivers and evolution paths of BPMS: state-of-the-art and future research directions // Informatica. Vilnius : Vilniaus universiteto leidykla. ISSN 0868-4952. eISSN 1822-8844. 2022, vol. 33, iss. 2, p. 399-420. DOI: 10.15388/22-INFOR487.
3. Alonderis, Romas; Pliu拧kevi膷ius, Regimantas Ri膷ardas; Pliu拧kevi膷ien臈, Aida; Giedra, Haroldas. Loop-check specification for a sequent calculus of temporal logic // Studia logica. Dordrecht : Springer. ISSN 0039-3215. eISSN 1572-8730. 2022, vol. 110, p. 1507-1536. DOI: 10.1007/s11225-022-10010-9.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Riga Technical University (Latvia)
University of Tartu (Estonia)
Warsaw University of Technology (Poland)
Systems Research Institute Polish Academy of Sciences
University of Geneva (Switzerland)
University of Frankfurt (Germany)
OTHER SCIENTIFIC ACTIVITIES
Prof. Dr Saulius Gudas
鈥 reviewer of the Baltic Journal of Modern Computing,
鈥 reviewer of the journal Informatica,
鈥 reviewer of the journal Information Systems and e-Business Management,
鈥 member of the Technical Committee TK8 of the Lithuanian Standardization Department;
鈥 IFIP TC8 Information Systems member;
鈥 representative of the National Digital Coalition from LIKS;
鈥 program committee member of the 15th International Baltic Conference on Digital Business and Intelligent Systems (Baltic DB&IS 2022), Riga, Latvia, 4鈥6 July 2022,
鈥 program committee member of the 27th International Conference on Information and Software Technologies, ICIST 2022, held in Kaunas, Lithuania,
Prof. Dr Dal臈 Dzemydien臈
鈥 editorial board member of the Scientific Journal of Riga Technical University: Applied Computer Systems,
鈥 editorial board member of the International Journal of Electronic Security and Digital Forensics,
鈥 editorial board member of the International Journal of Strategic Property Management,
鈥 program committee member of the 15th International Baltic Conference on Digital Business and Intelligent Systems (Baltic DB&IS 2022), Riga, Latvia, 4鈥6 July 2022,
鈥 member of the Council of the Lithuanian Computer Society (LIKS);
鈥 head of the Section of Legal Informatics at the Lithuanian Computer Society (LIKS);
鈥 member of the Council of the Lithuanian Operation Reasearch Society, ,council.en;
鈥 member of the European Artificial Intelligence Association;
鈥 member of the European Operation Research Association.
Assoc. Prof. Dr Audron臈 Lupeikien臈
鈥 editorial board member of the Scientific Journal of Riga Technical University: Applied Computer Systems,
鈥 steering committee and program committee member of the 15th International Baltic Conference on Digital Business and Intelligent Systems (Baltic DB&IS 2022),
鈥 program committee member of the 14th International Conference on Agents and Artificial Intelligence (ICAART 2022),
Dr Saulius Maskeli奴nas
鈥 chairman of the Council of the Lithuanian Computer Society
鈥 head of the Technical Committee TK4 鈥淚nformation technology鈥 of the Lithuanian Standards Board LST;
鈥 member of the Rules of Participation (RoP) working group of the European Open Science Cloud (EOSC),
鈥 Lithuania representative at the International Federation for Information Processing (IFIP)
鈥 International AIQT Foundation Advisory Board member (in Artificial Intelligence)
鈥 member of the Ministry of Transport and Communications project "Development of New Generation Internet Access Infrastructure (RAIN-3)" Steering Committee;
鈥 program committee member of the 15th International Baltic Conference on Digital Business and Intelligent Systems (Baltic DB&IS 2022),
鈥 member of the State Commission of the Lithuanian Language Sub-Commission of Language Technologies.
Dr Jolanta Miliauskait臈
鈥 reviewer of the Baltic Journal of Modern Computing,
鈥 reviewer of the journal Informatica,
鈥 scientific committee member of ICNAE 2022 (1st International Conference on New Approaches in Engineering)
鈥 member of the Council of the Lithuanian Computer Society (LIKS).
Laima Paliulionien臈
鈥 organizing committee member of the 13th International Workshop on Data Analysis Methods for Software Systems (DAMSS), Druskininkai, Lithuania, December 1鈥3, 2022,
Prof. Habil. Dr Stasys Jukna
鈥 scientific board member of the Electronic Colloquium on Computational Complexity (ECCC),
鈥 editorial board member of the Lithuanian Mathematical Journal,
Assoc. Prof. Habil. Dr Remigijus Pliu拧kevi膷ius
鈥 editorial board member of the Lithuanian Mathematical Journal,
Assoc. Prof. Dr Asta Slotkien臈
鈥 reviewer of the journal Informatica,
鈥 program committee member of the 38th ACM/SIGAPP Symposium on Applied Computing, technical track on Intelligent Systems for Digital Era (ISDE)
4 Akademijos st., LT-08663 Vilnius
Tel. (+370) 210 9732
E-mail:
Head 鈥 Prof. Dr Valentina Dagien臈
STAFF
Chief research fellow: Prof. Dr V. Dagien臈
Senior research fellow: Dr T. Jevsikova
Research fellows: Dr V. Dolgopolovas, Dr A. Ju拧kevi膷ien臈, Dr G. Stupurien臈
Doctoral students: V. Masiulionyt臈-Dagien臈, T. 艩iaulys
Affiliated senior research fellows: Assoc. Prof. Dr G. Grigas, Dr L. Markauskait臈.
RESEARCH INTERESTS
鈥 Application of intelligent technologies in education
鈥 Computer science (Informatics) education research
鈥 Computing engineering education research
鈥 Software localisation
鈥 Technology-enhanced learning
RESEARCH THEME FOR 2021-2023:
Research on Educational Environments and Technologies to Improve the Quality of Education. Prof. Dr V. Dagien臈, 2021鈥2023.
The main objective of the project is to study the problems of designing, integrating, and personalising interactive educational environments and technologies in education.
Main publications:
1. Dagien臈, Valentina; Dolgopolovas, Vladimiras. Short tasks for scaffolding computational thinking by the global Bebras challenge // Mathematics. Basel : MDPI. eISSN 2227-7390. 2022, vol. 10, iss. 17, art. no. 3194, p. [1-30]. [Scopus; Science Citation Index Expanded (Web of Science)] [Ind臈lis: 1,000] [Citav. rod.: IF: 2,592; AIF: 1,291; kvartilis: Q1 (2021, Clarivate JCR SCIE)] [Citav. rod.: CiteScore: 2,90; SNIP: 1,162; SJR: 0,538; kvartilis: Q1 (2021, Scopus Sources)] [M.kr.: T 007]
2. Dagien臈, Valentina; Jevsikova, Tatjana; Stupurien臈, Gabriel臈; Ju拧kevi膷ien臈, Anita. Teaching computational thinking in primary schools: Worldwide trends and teachers鈥 attitudes // Computer science and information systems. Novi Sad : University of Novi Sad. ISSN 1820-0214. eISSN 2406-1018. 2022, vol. 19, iss. 1, p. 1-24. [INSPEC; Scopus; Science Citation Index Expanded (Web of Science)] [Ind臈lis: 1,000] [Citav. rod.: IF: 1,170; AIF: 3,559; kvartilis: Q4 (2021, Clarivate JCR SCIE)] [Citav. rod.: CiteScore: 1,90; SNIP: 0,562; SJR: 0,350; kvartilis: Q3 (2021, Scopus Sources)] [M.kr.: N 009,T 007]
3. Dolgopolovas, Vladimiras; Dagien臈, Valentina. On semiotics perspectives of computational thinking: unravelling the 鈥減amphlet鈥 approach, a case study // Sustainability. Basel : MDPI. eISSN 2071-1050. 2022, vol. 14, no. 4, art no. 1956, p. [1-19]. [Scopus; Science Citation Index Expanded (Web of Science)] [Ind臈lis: 1,000] [Citav. rod.: IF: 3,889; AIF: 4,719; kvartilis: Q2 (2021, Clarivate JCR SSCI); IF: 3,889; AIF: 6,732; kvartilis: Q2 (2021, Clarivate JCR SCIE)] [Citav. rod.: CiteScore: 5,00; SNIP: 1,310; SJR: 0,664; kvartilis: Q1 (2021, Scopus Sources)] [M.kr.: T 007]
4. Stupurien臈, Gabriel臈; Jevsikova, Tatjana; Ju拧kevi膷ien臈, Anita. Solving ecological problems through physical computing to ensure gender balance in STEM education // Sustainability. Basel : MDPI. eISSN 2071-1050. 2022, vol. 14, iss. 9, art. no. 4924, p. [1-16]. [GEOBASE (Elsevier); GeoRef; Scopus; Social Sciences Citation Index (Web of Science); Science Citation Index Expanded (Web of Science)] [Ind臈lis: 0,332] [Citav. rod.: IF: 3,889; AIF: 4,719; kvartilis: Q2 (2021, Clarivate JCR SSCI); IF: 3,889; AIF: 6,732; kvartilis: Q2 (2021, Clarivate JCR SCIE)] [Citav. rod.: CiteScore: 5,00; SNIP: 1,310; SJR: 0,664; kvartilis: Q1 (2021, Scopus Sources)] [M.kr.: S 007,T 007]
International Research Projects
European Network for Gender Balance in Informatics. COST: EUGAIN - CA19122. 2020-2024 m. (Dr V. Dagien臈, Dr Anita Ju拧kevi膷ien臈)
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Ankara University (Turkey)
ETH Zurich (Switzerland)
KTH Royal Institute (Sweden)
Lancaster University (UK)
Radboud University Nijmegen (The Netherlands)
Tallinn University (Estonia)
Turku University (Finland)
OTHER RESEARCH ACTIVITIES
Prof. Dr V. Dagien臈
鈥 editor-in-Chief of the journal Informatics in Education, (Clarivate Analytics Web of Science Core Collection; Scopus; etc.);
鈥 editor-in-Chief of the journal Olympiads in Informatics (Scopus, etc),
鈥 area editor (Computing Didactics) of the Baltic Journal of Modern Computing, (Clarivate Analytics Web of Science Core Collection; Scopus; etc.);
鈥 editorial board member of the journals: International Journal of Digital Literacy and Digital Competence; International Journal of Instruction; Acta Paedaogica Vilnensia;
鈥 coordinator of the Nordplus Network on Innovative Computing Engineering Education Research;
鈥 representative of Lithuania in Education Committee TC3 under the International Federation for Information Processing (IFIP);
鈥 chair of the Bebras Board (International Challenge on Informatics and Computational Thinking):
Dr V. Dolgopolovas
鈥 member of European AI Alliance
鈥 member of USERN: Universal Scientific Education and Research Network:
Dr A. Ju拧kevi膷ien臈
鈥 member for methodological group of EU co-funded project No. 01.1.1-CPVA-V-701-15-0001 鈥濪evelopment of Vilnius STEAM Center鈥 activity 鈥濸reparation of the Methodological Part of STEAM Center activities: Development of Laboratory Descriptors and Integrated Methodologies for Robotics and Mobile Technology and Visual Programming Laboratory鈥,
Dr T. Jevsikova
鈥 member of International Federation for Information Processing (IFIP) TC3 WG 3.1 (Informatics for Secondary Education).
鈥 member for methodological group of EU co-funded project No. 01.1.1-CPVA-V-701-15-0001 鈥濪evelopment of Vilnius STEAM Center鈥 activity 鈥濸reparation of the Methodological Part of STEAM Center activities: Development of Laboratory Descriptors and Integrated Methodologies for Robotics and Mobile Technology and Visual Programming Laboratory鈥,
Dr G. Stupurien臈
鈥 Executive Editor of the journal Informatics in Education, (Clarivate Analytics Web of Science Core Collection; Scopus; etc.).
鈥 member of the Lithuanian Computer Society (LIKS);
鈥 member of the European Commission's 鈥淪ELFIE for TEACHERS鈥 network of experts.
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
1. Valentina Dagien臈, Gabriel臈 Stupurien臈, and Tatjana Jevsikova have organised the International Challenge on Informatics and Computational Thinking at the 鈥楤ebras鈥 Contest. They create, translate, and test tasks, as well as develop methodological materials for teachers.
2. In cooperation with the Institute of Educational Sciences, Valentina Dagien臈 and Gabriel臈 Stupurien臈 organised the 12th International Doctoral Consortium 鈥 the School of Engineering Education Research in Druskininkai, December 6-10, 2022.
3. The international journal 'Informatics in Education' had a Scopus citation index of 4.0 (in 2021) and WoS Journal Citation Indicator of 1.23 (preliminary rating).
4 Akademijos st., LT-08663 Vilnius
Tel. (+370) 210 9304
E-mail:
Head 鈥 Prof. Dr Julius 沤ilinskas
STAFF
Principal research fellows: Prof. Dr J. 沤ilinskas, Prof. Habil. Dr A. 沤ilinskas.
Senior research fellows: Assoc. Prof. Dr A. Lan膷inskas, Assoc. Prof. Dr R. Pupeikis.
Doctoral students: S. Tautvai拧as, M. Kepalas.
RESEARCH INTERESTS
鈥 Optimisation and high-performance computing
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Global Optimisation. Prof. Dr J. 沤ilinskas.
The project aims to develop the development of global optimisation algorithms and the application of them to optimisation problems.
The main results were: global optimisation algorithms with constraints; heuristic algorithms for facility location problems; Bayesian global optimisation; linear convolution computations online optimisation algorithm.
Main publications:
1. P. Fern谩ndez, A. Lan膷inskas, B. Pelegr铆n, J. 沤ilinskas (2022). A discrete competitive facility location model with proportional and binary rules sequentially applied. Optimization Letters. DOI:10.1007/s11590-022-01938-x.
2. S. Tautvai拧as, J. 沤ilinskas (2022). Scalable Bayesian optimization with generalized product of experts. Journal of global optimization. DOI:10.1007/s10898-022-01236-x.
3. D. Stumbrien臈, A. Jakaitien臈, R. 沤elvys, J. 沤ilinskas, R. Dukynait臈 (2022). Efficiency and effectiveness analysis based on educational inclusion and fairness of European countries. Socio-economic planning sciences. vol. 8, part. B, art. no. 101293, p. [1-17]. DOI:10.1016/j.seps.2022.101293.
National Research Projects
Creation and Development of Optimisation Algorithms for Facility Location with Uncertainty in Customer Behaviour. LMT MIP proposal. Main proposer: A. Lan膷inskas.
International Research Projects
Randomised Optimisation Algorithms Research Network. COST action proposal. Secondary proposer: A. Lan膷inskas
The European Network for Data-Driven Decision Making. COST action proposal. Secondary proposer: J. 沤ilinskas
MAIN RESEARCH ACHIEVEMENTS IN 2022
Heuristic algorithms for facility location problems.
Bayesian global optimisation.
Linear convolution computations real-time optimisation algorithm.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Universidad de Almer铆a (Spain)
Universidad de Murcia (Spain)
Universidad de La Laguna (Spain)
Universidad de Malaga (Spain)
Universidade de Coimbra (Portugal)
University of Edinburgh (UK)
Universit脿 della Calabria (Italy)
Universit脿 degli Studi di Cassino e del Lazio Meridionale (Italy)
Cardiff University (UK)
New Jersey Institute of Technology (USA)
OTHER RESEARCH ACTIVITIES
Prof. Dr J. 沤ilinskas
鈥 member of editorial boards of international journals:
o Computational Management Science (Springer, ),
o Computer Science (AGH, ),
Informatica (IOSPress/VU, ),
o Information Technology and Control (KTU, ),
o Journal of Global Optimization (Springer, ),
o Mathematical Methods of Operations Research (Springer, ),
o Mathematical Modelling and Analysis (VGTU, ),
o Open Computer Science (De Gruyter, ),
o Open Engineering (De Gruyter, ),
o Optimization Letters (Springer, ),
o Operations Research Forum (Springer Nature, ).
鈥 member of board of Lithuanian Operational Research Society (member society of EURO and IFORS), head of working group Optimization Methods and Applications,
鈥 member of European Network of Excellence on High Performance and Embedded Architecture and Compilation (HiPEAC),
鈥 member of Program/Scientific Committees:
o LION16: 16th Learning and Intelligent OptimizatioN Conference, Cyclades, Greece, June 5-10, 2022.
Prof. Habil. Dr A. 沤ilinskas
鈥 member of IFIP working group WG 7.6 Optimization-Based Computer Aided Modeling and Design,
鈥 member of American Mathematical Society,
鈥 member of programme committees of International conferences;
鈥 member of editorial boards of international journals:
o Journal of Global Optimization (Springer), ,
o Informatica (IOSPress/VU), ,
o Control and Cybernetics, control.ibspan.waw.pl:3000/mainpage,
o Statistics, Optimization and Information Computing, www.iapress.org/index.php/soic
o Journal of Intelligent Learning Systems and Applications, ,
o International Journal of Grid and High Performance Computing,
o The Open Cybernetics and Systemics Journal, ,
o Baltic Journal of Modern Computing; .
鈥 member of the Lithuanian Academy of Sciences,
Dr A. Lan膷inskas
鈥 affiliate member of European Network of Excellence on High Performance and Embedded Architecture and Compilation (HiPEAC),
鈥 reviewer of journals:
o Optimization Letters
o Baltic Journal of Modern Computing
Assoc. Prof. Dr R. Pupeikis
鈥 member of Lithuanian Computer Society,
鈥 member of Lithuanian Mathematical Society,
鈥 reviewer of the journal:
o International Journal of Adaptive Control and Signal Processing,
IMAGE AND SIGNAL ANALYSIS GROUP
4 Akademijos st., LT-08663 Vilnius
Tel. (+370) 210 9328
E-mail:
Head 鈥 Assoc. Prof. Dr Povilas Treigys
STAFF
Principal researchers: Prof., Dr Povilas Treigys, Dr G. Korvel
Senior research fellows: Assoc., Prof. Dr G. Korvel, Assoc. Prof., Dr G. Tamulevi膷ius, Dr Jolita Bernatavi膷ien臈
Affiliated research fellows: Prof. Habil. Dr K. Kazlauskas
Projects specialist: G. Navickas
Doctoral students: B. 膶iapas, J. Jucevi膷ius, S. Virbukait臈, M. Danilovait臈, R. Jurkus, A. Vaitulevi膷ius, R. Surkant
Study staff: L. Aidokas, A. Rasmusson, J. Globien臈, M. Liutvinavi膷ius, G. Navickas
RESEARCH INTERESTS
鈥 Audio and image signal processing;
鈥 pattern recognition;
鈥 robotics;
鈥 machine learning;
鈥 natural language processing;
鈥 machine learning.
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Digital signal analysis and modelling.
Tasks in 2023:
鈥 Increase the accuracy of marine traffic anomaly detection algorithms
鈥 Investigate the impact of interclass distance on the multiclass classification problem
鈥 Develop autoencoder-based models combining functional data analysis methods for cancerous prostate region detection
鈥 Investigate the impact of interpolation techniques on the segmentation results for the optic nerve disc and excavation using deep neural networks.
鈥 Investigate the Lombard effect for speech intelligibility improvement.
鈥 Conduct analysis and modelling of pathological voices.
鈥 Investigate automatic speech recognition for Human-Robot interaction.
鈥 Investigate and develop new synthesised speech quality evaluation methods.
Main results:
鈥 Participated in the competition 'The transport theme of students' final theses in the competition'. The winner of the prize place, on the topic of water transport, entitled 'Study of LSTM deep neural networks for predicting ship progress using big traffic data', Ministry of Communications, Vilnius, Lithuania.
鈥 Investigated retail Self-checkout image classification performance: similar class grouping or individual class classification approach.
鈥 Overviewed the analysis of intonation modelling.
鈥 Investigated noise interference on speech towards applying the Lombard effect automatically.
鈥 Prepared manuscript on a critical review of acoustic analysis-based voice pathology detection.
鈥 Investigated cognitive approach methods for synthesised speech quality evaluation. Cognitive experiments with blind and sighted people.
鈥 Enhanced speech and audio signals.
鈥 Investigated the impact of COVID-19-related lockdown measures on economic and social outcomes in Lithuania, conducted an analysis of the occupancy of office buildings, and made predictions associated with the impact of the COVID-19 pandemic.
Main publications:
1. Markevi膷i奴t臈, Jurgita; Bernatavi膷ien臈, Jolita; Levulien臈, R奴ta; Medvedev, Viktor; Treigys, Povilas; Venskus, Julius. Impact of COVID-19-related lockdown measures on economic and social outcomes in Lithuania // Mathematics. Basel : MPDI. eISSN 2227-7390. 2022, vol. 10, no. 15, art. no. 2734, p. [1-20].
2. Motuzien臈, Violeta; Bielskus, Jonas; Lapinskien臈, Vil奴n臈; Rynkun, Genrika; Bernatavi膷ien臈, Jolita. Office buildings occupancy analysis and prediction associated with the impact of the COVID-19 pandemic // Sustainable cities and society. Amsterdam : Elsevier Ltd. ISSN 2210-6707. eISSN 2210-6715. 2022, vol. 77, art. no. 103557, p. 1-12.
3. Melnik-Leroy, Gerda Ana; Bernatavi膷ien臈, Jolita; Korvel, Gra啪ina; Navickas, Gediminas; Tamulevi膷ius, Gintautas; Treigys, Povilas. An Overview of Lithuanian Intonation: A Linguistic and Modelling Perspective // Informatica 2022. (accepted)
4. Korvel, Gra啪ina; K膮kol, Krzysztof; Treigys, Povilas; Kostek, Bo偶ena. Investigating noise interference on speech towards applying the Lombard effect automatically // ISMIS 2022: Foundations of intelligent systems: International symposium on methodologies for intelligent systems / Ceci, M., Flesca, S., Masciari, E., Manco, G., Ra艣, Z.W. (eds). Cham, 2022. ISBN 9783031165634. eISBN 9783031165641. p. 399-406. (Lecture Notes in Computer Science, ISSN 0302-9743, eISSN 1611-3349 ; vol 13515). DOI: 10.1007/978-3-031-16564-1_38
National Research Projects
Creating a database of depersonalised eye fundus images (Nuasmenint懦 aki懦 dugn懦 vaizd懦 baz臈s k奴rimas). (Approval No.158200-18/11-1057-572). Vilnius Region Biomedical Research Committee. Project duration 11/2018鈥10/2030.
Investigating speech in the presence of noise interferences employing signal processing and machine learning methods. Postdoctoral Project. 2021/07鈥2023/07.
International Research Projects
HPC, HPDA and Artificial Intelligence (AI) (Project Reference: 951732). European Union Horizon 2020 (H2020). National Competence Centres in the framework of EuroHPC. Project duration 2020/9/1鈥2022/8/31.
Within the EuroCC project under the European Union's Horizon 2020 programme (H2020), participating countries are tasked with establishing a single National Competence Centre (NCC) in the area of high-performance computing (HPC) in their respective countries. These NCCs will coordinate activities in all HPC-related fields at the national level and serve as a contact point for customers from industry, science, (future) HPC experts, and the general public alike. The EuroCC project is funded 50 per cent through H2020 (EuroHPC Joint Undertaking [JU]) and 50 per cent through national funding programs within the partner countries. The EuroCC activities鈥攚ith 33 member and associated countries on board鈥攊s coordinated by the High-Performance Computing Center Stuttgart (HLRS). The project aims to elevate the participating countries to a common high level in the fields of HPC, HPDA and Artificial Intelligence (AI). To this end, the EuroCC project will establish National Competence Centres (NCCs) in the participating countries, which will be responsible for surveying and documenting the core HPC, HPDA, and AI activities and competencies in their respective countries. Ultimately, the goal is to make HPC available to different users from science, industry, public administration, and society.
Multi3Generation: Multi-task, Multilingual, Multi-modal Language Generation. COST action CA18231. Member of Managing Committee: Dr G. Korvel. 2019-2023
Language generation (LG) is a crucial technology if machines are to communicate with humans seamlessly using natural human language. A great number of different tasks within Natural Language Processing (NLP) are language generation tasks, and being able to effectively perform these tasks implies (1) that machines are equipped with world knowledge that can require multi-modal processing and reasoning (e.g. textual, visual and auditory inputs, or sensory data streams), and (2) the study of strong, novel Machine Learning (ML) methods (e.g. structured prediction, generative models) since virtually all state-of-the-art NLP models are learned from data. Moreover, human languages can differ wildly in their surface realisation (i.e. scripts) as well as their internal structure (i.e. grammar), which suggests that multilinguality is a central goal if machines are to perform seamless language generation. Language generation technologies would greatly benefit both public and private services offered to EU citizens in a multilingual Europe and have strong economic and societal impacts.
Universality, Diversity, and Idiosyncrasy in Language Technology (Unidive). COST action CA21167. Member of Managing Committee: Dr G. Korvel, 2022-2026.
Efficient access to the constantly growing quantities of data, especially language data, largely relies on advances in data science. This domain includes natural language processing (NLP), which is currently booming to the benefit of many end-users. However, this optimisation-based technological progress poses an important challenge: accounting for and fostering language diversity. The UniDive Action takes two original stances on this challenge. Firstly, it aims to embrace both inter- and intra-language diversity, i.e. a diversity understood both in terms of the differences among the existing languages and of the variety of linguistic phenomena exhibited within a language. Secondly, UniDive does not assume that linguistic diversity is to be protected against technological progress but strives for both of these aims jointly, to their mutual benefit. Its approach is to (i) pursue NLP-applicable universality of terminologies and methodologies, (ii) quantify inter- and intra-linguistic diversity, and (iii) boost and coordinate universality- and diversity-driven development of language resources and tools. UniDive builds upon the previous experience of European networks and projects that provided a proof of concept for language modelling and processing unified across many languages but preserving their diversity. The main benefits of the Action will include, on the theoretical side, a better understanding of language universals and, on the practical side, language resources and tools covering, in a unified framework, a bigger variety of language phenomena in a large number of languages, including low-resourced and endangered ones.
Main results:
鈥 Feature space analysis for machine-based recognition.
鈥 Machine learning algorithms for multiscale data analysis.
鈥 Machine learning methods for language generation.
鈥 Efficient deployment of fractal theory to industrial applications.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
鈥 Hospital Kauno klinikos of Lithuanian University of Health Sciences (Lithuania)
鈥 MB 鈥楽auliaus Vaitkaus aus懦, nosies, gerkl臈s lig懦 klinika鈥 (Lithuania)
鈥 Forensic Science Centre of Lithuania (Lithuania)
鈥 91桃色 Hospital Santaros klinikos (Lithuania)
鈥 National Cancer Institute (Lithuania)
鈥 Brno University of Technology (Czech Republic)
鈥 Gdansk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Audio Acoustics Laboratory
鈥 Aveiro University, Portugal
鈥 Konstantinos Diamantaras, Department of Information and Electronic Engineering, International Hellenic University, Greece
鈥 Elena Lloret, Department of Software and Computing Systems, University of Alicante, Alicante, Spain
鈥 Justino Laurenco, Porto, ISPGAYA Portugal
OTHER RESEARCH ACTIVITIES
Prof. Dr P. Treigys
鈥 reviewer of the journals:
o Informatica,
o Modelling and Control Journal,
o Nonlinear Analysis
o Baltic Journal of Modern Computing
o MDPI Senesors
o MDPI Electronics
Prof. Habil. Dr K. Kazlauskas
鈥 member of Lithuanian Computer Society,
鈥 member of Lithuanian Mathematical Society,
鈥 reviewer of international journals:
o IEEE Trans. On Signal Processing;
o IEEE Trans. On Circuits and Systems;
o Informatica;
o Information Technology and Control.
Assoc. Prof. Dr G. Tamulevi膷ius
鈥 reviewer for the international journals:
o Informatica,
o Baltic Journal of Modern Computing, www.lu.lv/baltic-journal-of-modern-computing;
o Nonlinear Analysis: Modelling and Control Journal,
o IEEE Access, IEEE Access.
o Neurocomputing
o IEEE Journal of Biomedical and Health Informatics
o International Journal of Applied Mathematics and Computer Sciences
鈥 Senior member of IEEE Computer Society, Signal Processing Society, and Computational Intelligence Society sections. Vice-chair of the IEEE Lithuania Section Computer Society section.
Dr G. Korvel
鈥 member of Lithuanian Computer Society,
鈥 member of Lithuanian Society of Young Researchers.
鈥 member of Lithuanian Mathematical Society,
鈥 Member of INSTICC (the Institute for Systems and Technologies of Information, Control and Communication), editorial board member:
鈥 A member of editorial board of The Journal of Intelligent Information Systems reviewer of international journals:
鈥 Journal of the Audio Engineering Society www.aes.org/journal;
鈥 Archives of Acoustics acoustics.ippt.gov.pl;
鈥 Metrology and Measurement Systems
鈥 Journal of Intelligent Information Systems
鈥 Information Technology and Control
鈥 Informatica www.mii.lt/informatica;
鈥 Pattern Recognition Letters www.journals.elsevier.com/speech-communicat;
鈥 Speech Communication www.journals.elsevier.com/speech-communication;
鈥 Symmetry
鈥 Applied Sciences
鈥 Electronics
Dr J. Bernatavi膷ien臈
鈥 Managing Co-editor of Baltic Journal of Modern Computing,
鈥 Member of Lithuanian Computer Society (Artificial Intelligence Section),
鈥 Member of Lithuanian Mathematical Society,
鈥 Member of Lithuanian Operational Research Society,
鈥 reviewer of international journals:
o Informatica (IOSPress/VU),
o Baltic Journal of Modern Computing
o Sensors
o Applied Sciences
o Journal of Marine Science and Engineering
G. Navickas
鈥 member of Lithuanian Computer Society,
鈥 member of IEEE .
INTELLIGENT TECHNOLOGIES RESEARCH GROUP
4 Akademijos st., LT-08663 Vilnius.
Tel. (+370 5) 210 9311
E-mail:
Head 鈥 Dr Virginijus Marcinkevi膷ius
STAFF
Senior researchers: Prof. Dr Virginijus Marcinkevi膷ius, Prof. Dr Darius Plikynas, Prof. Dr Igoris Belovas.
Affiliated researchers: Prof. Habil. Dr Leonidas Sakalauskas, Dr Stasys Stei拧奴nas,
Junior Assistants: Aivaras Bielskis
Profesors: Prof. Dr Virginijus Marcinkevi膷ius , Dr Igoris Belovas.
Doctoral students: Aivaras Bielskis , Cha啪evskas Andrius, Dulskis Vytautas, Gricius Rolandas, Ieva Rizgelien臈, Brendonas Stakauskas, Urbonait臈 Neringa, Vaitkevi膷ius Paulius.
Other staff: Lukas Kuzma
RESEARCH INTERESTS
鈥 Machine learning and its applications.
鈥 Artificial intelligence and its applications.
鈥 Natural language processing.
鈥 Cyber security.
鈥 Mathematical modelling.
鈥 Image analysis.
鈥 Data mining and visualisation.
鈥 Application of modelling, classification, and clustering methods in medicine (e.g. in genetics) and economics.
鈥 Optimisation. Application of stochastic optimisation methods in engineering.
鈥 Multi-agent systems: simulation and application in social research.
RESEARCH PROJECTS CARRIED OUT IN 2022
National Research Projects
Publications:
1. Plikynas D, Miliauskas A, Lau啪ikas R, Dulskis V, Sakalauskas L. The cultural impact on social cohesion: an agent-based modeling approach. Quality & Quantity. 2022 Jan 21:1-32. [Q1; IF=3.65] 0.85
2. Belovas, I., Sabaliauskas, M., Kuzma, L. (2022) Series with binomial-like coefficients for the investigation of fractal structures associated with the Riemann zeta function // Fractal and fractional, 6(6:300), 1-21. [Q1; IF=3,577] 1
3. Belovas, I. (2022). Central limit theorems for combinatorial numbers associated with Laguerre polynomials. Mathematics, 10 (6:865). [Q1; IF=2.592]
4. Belovas, I. (2022). Series with binomial-like coefficients for the Riemann zeta function. Annali Di Matematica Pura Ed Applicata, 201, p. 903鈥912. [Q2; IF=0.986]
5. Belovas, I. (2022). Central and local limit theorems for the weighted Delannoy numbers. Analele Stiintifice Ale Universitatii Ovidius Constanta-Seria Matematica, 30(2), 25-44. [Q3; IF=0.886]
6. Belovas, I., Sakalauskas, L. Starikovi膷ius, V. (2022). A method for accelerated computation of the Riemann zeta function on the complex plane. Publicationes Mathematicae Debrecen, 100(1-2), 167鈥184. [Q2; IF=0.810]
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INOVATION) PARTNERS
SAP (Germany)
Neurotechnology (Lithuania)
University of Tartu (Estonia)
Vilnius Gediminas Technical University (Lithuania)
Ghent University (Belgium)
Warsaw University of Technology (Poland)
Lithuanian Culture Research Institute (Lithuania)
OTHER SCIENTIFIC ACTIVITIES
Prof. L. Sakalauskas
鈥 Editorial board member of Journal Technological and Economic Development of Economy
鈥 Elected member of International Statistical Institute (2001)
鈥 Member of European Working Group on Continuous Optimization
鈥 Member of European Working Group on Stochastic Optimisation
鈥 Member of European Working Group on Civil Engineering and Sustainable Development
鈥 President of Lithuanian Operational Research Society,
鈥 Chair of Lithuanian Conference on Operations Research and Application in Business and Technics
鈥 Reviewer of international journals:
o Annals of Operation Research (Springer)
o European Journal of Operational Research (Elsevier)
o Informatica (IOSPress/VU)
o Central European Journal of Operational Research (Springer),
o Information Technology and Control (KTU),
o International Transactions on Operational Research (Wiley&Sons)
o Methodology and Computing in Applied Probability (Springer)
o Technological and Economic Development of Economy (Francis&Taylor)
Prof. D. Plikynas
鈥 Reviewer in
o Computational and Mathematical Organization Theory (Springer)
o Entropy (MDPI)
o PeerJ
o Economics (VU)
o Information Technology and Control (KTU)
鈥 Member of
o Artificial Intelligence section of Lithuanian Computer Society (LIKS-AIS)
o ESSA (European Social Simulation Association)
o ECCAI (European Coordinating Committee for Artificial Intelligence)
Prof. Dr I. Belovas
鈥 Member of Lithuanian Mathematical Society,
鈥 Member of editorial board of Lietuvos Matematikos Rinkinys journal
Prof. Dr V. Marcinkevi膷ius
鈥 Member of Council of Lithuanian Computer Society,
鈥 Member of Lithuanian Mathematical Society,
鈥 Member of Lithuanian Operational Research Society,
鈥 Member of European Working Group on Stochastic Optimisation
鈥 Reviewer of international journal Informatica (IOSPress/VU)
鈥 Member of editorial board of journal Applied Computer Systems
鈥 Member of IST-141-RTG on Exploratory Visual Analytics group
鈥 Substitute in COST action Statistical and machine learning techniques in human microbiome studies.
STATISTICS AND PROBABILITY GROUP
4 Akademijos st., LT-08663 Vilnius
Tel. (+370) 210 9731
E-mail
Head 鈥 Prof. Habil. Dr K臋stutis Kubilius
STAFF
Principal research fellows: Prof. Habil. Dr K. Kubilius, Dr (HP) S. Norvidas.
Professor: Prof. Habil. Dr M. Sapagovas (emeritus).
Senior research fellows: Dr D. E. Otera, Dr M., Dr M. Vai膷iulis.
Research fellows: Dr A. Astrauskas, Dr A. 膶iginas, Dr V. Kurauskas,
Dr J. Novickij.
Affiliated research fellows: Dr J. J. Ma膷ys, Prof. Dr R. Mikulevi膷ius, Prof. Habil. Dr R. Rudzkis, Prof. Habil. Dr J. K. Sunklodas.
Doctoral students: A. Med啪i奴nas
RESEARCH INTERESTS
鈥 Statistical inference for long memory processes
鈥 Heavy tails
鈥 Self-similar processes
鈥 Rough paths
鈥 Finite population statistics and statistical analysis of data
鈥 Differential equations with an integral boundary condition
鈥 Random graphs
鈥 Combinatorics
鈥 Discrete mathematics
鈥 Algebraic geometry
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Analysis and Application of Probabilistic and Deterministic Models. Prof. Dr (HP) K. Kubilius. 2020鈥2022.
A review was conducted of several topological handedness conditions at infinity of finitely defined groups related to the concept of geometric simple connectivity, with particular attention to the concept of the simplicial resolvent developed by V. Poenaru (under the title' inverse representation'). The generalisation of existing results correlating with some of these properties is provided.
The stability of the alternating direction method for wave equation with integral boundary conditions in an energy norm is considered. The proof of the stability is based on the properties of eigenvalues and eigenvectors of the corresponding difference operators.
A backwards approximation scheme is constructed for one-dimensional stochastic differential equations driven by a stochastic process with Holder continuous paths. This approximation scheme demonstrates a higher convergence rate than previous schemes by other authors in the field.
Main publications:
1. Otera, Daniele Ettore. On simplicial resolutions of groups // Revista de la Real Academia de Ciencias Exactas, F铆sicas y Naturales. Serie A. Matem谩ticas. Milan : Springer. ISSN 1578-7303. eISSN 1579-1505. 2022, vol. 116, no. 3, art. no. 138, p. [1-17]. DOI: 10.1007/s13398-022-01283-9
2. Sapagovas, Mifodijus; Novickij, Jurij. Alternating direction method for the wave equation with integral boundary conditions // Applied numerical mathematics. Amsterdam : Elsevier B.V. ISSN 0168-9274. eISSN 1873-5460. 2022, vol. 182, p. [1-13]. DOI: 10.1016/j.apnum.2022.07.017.
3. Kubilius, K臋stutis; Med啪i奴nas, Aidas. Pathwise convergent approximation for the fractional SDEs // Mathematics. Basel : MDPI. eISSN 2227-7390. 2022, vol. 10, iss. 4, art. no. 669, p. [1-16]. DOI: 10.3390/math10040669.
OTHER RESEARCH ACTIVITIES
Prof. K. Kubilius
鈥 co-editor-in-Chief of the Modern Stochastics: Theory and Applications, ;
鈥 editorial board member of the Lithuanian Mathematical Journal,
鈥 editorial board member of the Mathematical Modelling and Analysis, .
Prof. S. Norvidas
鈥 editorial board member of the Lithuanian Mathematical Journal,
Prof. Emeritus M. Sapagovas
鈥 editorial board member of the Lithuanian Mathematical Journal,
鈥 editorial board member of the journal Nonlinear Analysis: Modelling and Control,
鈥 editorial board member of the journal Informatica,
鈥 editorial board member of the Mathematical Modelling and Analysis, .
ARTIFICIAL INTELLIGENCE LABORATORY
4 Akademijos st., LT-08663 Vilnius.
Tel. (+370 5) 210 9311
E-mail:
Head 鈥 Dr Virginijus Marcinkevi膷ius
STAFF
Senior researchers: Dr Virginijus Marcinkevi膷ius.
Junior researcher: Dr J奴rat臈 Vai膷iulyt臈, Linas Aidokas
Other staff: Neringa Urbonait臈
Doctoral students: Shubham Juneja, Vytautas Paura, Mantas Briliauskas.
RESEARCH INTERESTS
鈥 Advance machine learning in process automatisation.
鈥 Natural language processing.
鈥 Image processing and analysis with deep neural networks.
鈥 Visual odometry and localisation.
RESEARCH PROJECTS CARRIED OUT IN 2022
National Research Projects
The main goal is to investigate machine and imitational learning usage for robot navigation and localisation in real environments. Research is conducted on natural language processing applications in human-machine interfaces.
Main results:
1. Lasy, Ilya; Marcinkevi膷ius, Virginijus. Dialogue system augmented with commonsense knowledge // 91桃色 Open Series: Konferencijos 鈥濴ietuvos magistrant懦 informatikos ir IT tyrimai鈥 darbai", 2022 m. gegu啪臈s 16 d. Vilnius : Vilniaus universiteto leidykla, 2022. eISBN 9786090707425. eISSN 2669-0535. p. 68-76. DOI: 10.15388/LMITT.2022.7.
2. Cha啪evskas, Andrius; Belovas, Igoris; Marcinkevi膷ius, Virginijus. Markov, probabilistic and rule-based password quessing methods: survey and comparison // Kriminalistika ir teismo ekspertologija: mokslas, studijos, praktika XVIII / Criminalistics and forensic expertology: science, studies, expertology: science, studies, practice : recenzuojam懦 mokslini懦 straipsni懦 rinkinys. Vilnius : Lietuvos eismo ekspertiz臈s centras. ISSN 2783-7068. 2022, p. 114-123.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INOVATION) PARTNERS
SAP (Germany)
Neurotechnology (Lithuania)
OTHER SCIENTIFIC ACTIVITIES
Dr V. Marcinkevi膷ius
鈥 Member of Council of Lithuanian Computer Society,
鈥 Member of Lithuanian Mathematical Society,
鈥 Member of Lithuanian Operational Research Society,
鈥 Member of European Working Group on Stochastic Optimisation
鈥 Reviewer of international journal Informatica (IOSPress/VU)
鈥 Member of editorial board of journal Applied Computer Systems
鈥 Member of IST-141-RTG on Exploratory Visual Analytics group
鈥 Substitute in COST action Statistical and machine learning techniques in human microbiome studies.
47 Didlaukio st., LT-08303 Vilnius
Tel. 219 5040
E-mail:
www:
Director 鈥 Prof. Dr Rimantas Vaicekauskas
DEPARTMENTS AND LABORATORIES OF THE INSTITUTE
Department of Computational and Data Modeling
Department of Computer Science
Department of Mathematical Computer Science
Department of Software Engineering
Cybersecurity Laboratory
RESEARCH AREAS
鈥 Informatics
鈥 Informatics engineering
鈥 Fundamental mathematics
鈥 Applied mathematics
BEST REPORTS DELIVERED AT CONFERENCES ABROAD
J. M. Menjanahary and R. Krasauskas, Dupin cyclide spline surfaces of arbitrary topology, The 10th International Conference on Curves and Surfaces, June 20-24, 2022, Arcachon, France.
MAIN SCIENTIFIC ACHIEVEMENTS IN 2022
It was shown that the algorithm based on convolutional neural networks not only enables the detection of damage to biological membranes but also predicts the electrochemical response (computed by the finite element method) of these membranes.
An efficient TKHC algorithm was proposed and investigated to augment the privacy and safety of shared images.
Formal foundations and tool support were developed for the formal analysis and automated, scalable safety verification of railway signalling programs. The method and automated framework (called SafeCap) have been successfully applied by railway companies in the UK.
An application of formal verification (using the proof assistant Isabelle/HOL) for ensuring the correctness of scientific data processing software in the crystallographic domain was presented.
The two-term Edgeworth expansion for the distribution of a general asymptotically linear statistic under minimal smoothness conditions was established.
DEPARTMENT OF COMPUTATIONAL AND DATA MODELING
47 Didlaukio st., LT-08303 Vilnius
Tel. 219 5025
E-mail: ,
Head 鈥 Assoc. Prof. Dr Rimvydas Krasauskas
STAFF
Professors: Habil. Dr Emeritus F. Ivanauskas, Dr A. Juozapavi膷ius (part-time), Dr T. Me拧kauskas.
Associate professors: Dr A. Brilingait臈, Dr L. Bukauskas, Dr P. Kasparaitis, Dr R. Krasauskas, Dr V. Rap拧evi膷ius (part-time), Dr S. Zub臈.
Researchers: (snr. r.) Dr Simonas 艩altenis, Dr A. Barauskas, Dr V. 膶eikut臈
Assistant professors: Dr R. Astrauskas, Dr M. Beniu拧臈, Dr A. 膶ivilis (part-time), Dr J. Katina, Dr A. V. Misiukas Misi奴nas (part-time).
Teaching assistants: T. Raila (part-time), J. M. Menjanahary.
Lecturers: Dr J. Ignatavi膷i奴t臈, L. B奴t臈nas (part-time), V. Krinickij, E. Kutka (part-time), V. Masiulionyt臈-Dagien臈 (part-time), G. 艩amrickis (part-time), B. 艩ulmanas (part-time).
Partnership associate professors: T. G. Lipnevi膷ius (part-time), R. Markauskas (part-time).
Doctoral students: M. M奴啪as, T. Raila (part-time).
RESEARCH INTERESTS
鈥 Methods and applications of nonlinear computational modelling and geometric modelling.
鈥 Methods of computer vision, medical imaging, digital imaging, speech and signal processing, data structures and algorithms.
鈥 Computational modelling of chemical, electrochemical, medical, and biological processes and systems.
鈥 Internet technology and information systems.
鈥 Location-based services and database management systems.
鈥 Algorithms for intelligent transport.
鈥 Computer networks.
鈥 Cloud and parallel computing, virtualisation.
鈥 Education in Computer Science.
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Research and application of methods for computational and geometric modelling, images, signals, and database analysis. Dr T. Me拧kauskas, Dr R. Krasauskas. 2019 鈥 2023.
It was shown that the algorithm based on convolutional neural networks not only enables the detection of damage to biological membranes but also predicts the electrochemical response (computed by the finite element method) of these membranes.
The deep neural network speech synthesis package 'Merlin' was ported from the Python programming language into C.
Cyclide surfaces and 3d volumes with applications to spline constructions were investigated.
A deep learning model to predict electric-vehicle energy consumption was developed and tested on real-world datasets.
Main publications:
1. Raila, Tomas; Penkauskas, Tadas; Ambrulevi膷ius, Filipas; Jankunec, Marija; Me拧kauskas, Tadas; Valin膷ius, Gintaras. AI鈥恇ased atomic force microscopy image analysis allows to predict electrochemical impedance spectra of defects in tethered bilayer membranes, Scientific reports. Berlin: Nature research. ISSN 2045-2322. 2022, vol. 12, art. no. 1127, p. 1-11. DOI: 10.1038/s41598-022-04853-4.
2. Juozapavi膷ius, Au拧rius; Brilingait臈, Agn臈; Bukauskas, Linas; Lugo, Ricardo Gregorio. Age and gender impact on password hygiene, Applied sciences: Special issue: State-of-the-art of cybersecurity. Basel: MDPI. eISSN 2076-3417. 2022, vol. 12, iss. 2, art. no. 894, p. [1-15]. DOI: 10.3390/app12020894.
3. Mahmoud E., Hodeish; Bukauskas, Linas; Vikas T., Humbe. A new efficient TKHC-based image sharing scheme over unsecured channel, Journal of King Saud University - Computer and information sciences. Amsterdam: Elsevier. ISSN 1319-1578. eISSN 2213-1248. 2022, vol. 34, no. 4, p. 1246-1262. DOI: 10.1016/j.jksuci.2019.08.004.
National Research Projects
Quantitative Assessment of Membrane Damage by Pore-Forming Toxins (No. LMT S-MIP-19-33). The Research Council of Lithuania. Project leader: Dr G. Valin膷ius, Life Sciences Center, 91桃色/ Dr T. Me拧kauskas and T. Raila. 2019鈥2022.
AFM (Atomic Force Microscopy) images of tethered bilayer membranes were processed applying machine learning type techniques, and tools to assess the type of distribution of clustered defects were developed.
Data Management and Algorithms for Smart Transportation (No. 01.2.2-LMT-K-718-02-0018). The Research Council of Lithuania. Project leader: Dr S. 艩altenis. Project researchers: Dr A. Brilingait臈, Dr L. Bukauskas, Dr A. 膶ivilis, Dr A. Barauskas, Dr V. 膶eikut臈, E. Kutka, V. Krinickij. 2019鈥2023.
The data model of charge-arrival-time profiles and a testbed was proposed to capture long electric vehicle routes and compare travel plans for trips with charging stops. Deep learning model to predict electric-vehicle energy consumption was developed and tested on real-world datasets.
International Research Projects
Leading Nordforsk (EOSC-Nordic project funded by H2020). EU Horizon 2020. Dr A. Brilingait臈, Dr L. Bukauskas, and E. Kutka. 2019鈥2022.
The European open science cloud infrastructure as a service was investigated and considered within the local legal context.
GRAPES 鈥 learning, processing and optimising shapes (No. 860843). Funding scheme (H2020-MSCA-ITN-2019). EU Horizon 2020 research and innovation programme under the Marie Sk艂odowska-Curie Actions 鈥 Innovative Training Networks (ITN). Project coordinator: Prof. I. Emiris, ATHENA RIC, Greece, Dr R. Krasauskas, and Dr S. Zub臈, 2019鈥2023.
This is a multidisciplinary consortium uniting 17 academic institutions and industrial partners all around Europe. The VU team is developing cyclidic splines of arbitrary topology based on circular meshes. Exchanges consisting of 3-month secondments for doctoral (PhD) students were arranged with Johannes Kepler University (Austria).
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INOVATION) PARTNERS
Aalborg University (Denmark)
CERN (Switzerland)
Financial Crime Investigation Service (Lithuania)
ART21, JSC (Lithuania)
OTHER SCIENTIFIC ACTIVITIES
Prof. Emeritus F. Ivanauskas
鈥 Deputy Chairman of the Division of Mathematical, Physical and Chemical Sciences of the Lithuanian Academy of Sciences, ;
鈥 Member of the Lithuanian Academy of Sciences, ;
鈥 President of the Lithuanian Association of Nonlinear Phenomena Researchers, ;
鈥 President of the Council of 91桃色 professor鈥檚 emeritus club ;
鈥 Honorary Editor of the journal Nonlinear Analysis: Modelling and Control, ;
鈥 Editorial board member of the Lithuanian Mathematical Journal, ;
鈥 Editorial board member of the journal Mathematical Modelling and Analysis,
Prof. A. Juozapavi膷ius
鈥 Editorial board member of the journal Nonlinear Analysis: Modeling and Control,
Assoc. Prof. A. Brilingait臈
鈥 Member of Association for Computing Machinery (ACM), ;
Assoc. Prof. L. Bukauskas
鈥 Board member of Technical Committee No. 86 for Digital geographic information at the Department of Standardization.
Assoc. Prof. R. Krasauskas
鈥 Editorial board member of the journal Lithuanian Mathematical Journal,
Dr S. 艩altenis
鈥 Program committee member (vision track), 30th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2022),
BEST REPORTS DELIVERED AT CONFERENCES ABROAD
J. M. Menjanahary and R. Krasauskas, Dupin cyclide spline surfaces of arbitrary topology, The 10th International Conference on Curves and Surfaces, June 20-24, 2022, Arcachon, France.
DEPARTMENT OF COMPUTER SCIENCE
47 Didlaukio st., LT- 08303 Vilnius
Tel. 219 5001
E-mail:
Head- Prof. Dr Rimantas Vaicekauskas
STAFF
Professors: Dr R. Vaicekauskas, Dr L. Laibinis (part-time), Dr A. Raudys (part-time).
Research fellow: Dr L. Laibinis (part-time).
Senior research fellow: Habil. Dr 艩. Raudys.
Assistants: Dr J. Andrikonis, Dr A. Bir拧tunas, Dr V. Di膷i奴nas, Dr H. Giedra, Dr L. Litvinas, Dr G. Skersys.
Partnership professors: Dr D. Baronas (part- time), Dr R. Kybartas (part-time).
Associate partnership professors: S. Grigaitis (part- time), A. Janeli奴nas (part-time), R. Masiulis (part-time), L. Ri膷kus (part-time).
Lecturers: S. Bla啪i奴nas (part-time), Dr R. Dzindzalieta (part-time), M. Grubliauskis (part- time), K. Mizara (part-time), I. Radavi膷ius.
RESEARCH INTERESTS
鈥 Formal modelling and verification of distributed software-based systems
鈥 Quantitative assessment of complex computer-based systems
鈥 Automated formal reasoning about system correctness using interactive proof assistants
鈥 Combinatorial search in large number theory problems
鈥 Colour rendering of light sources and its applications
鈥 Global optimisation of multi-objective functions
鈥 Computational modelling and the optimisation of bioreactors
鈥 Qualified electronic signature and applications
鈥 Error-correcting codes
鈥 Computational intelligence and machine learning
鈥 Financial data analysis using computational intelligence methods
鈥 Temporal and modal logic
鈥 Buridan's divided modal propositions
鈥 Neural networks, pattern recognition
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Development of Intelligence Methods and its Applications in Information Technologies. Prof. R. Vaicekauskas, Dr L. Laibinis, Dr Aistis Raudys, 2021鈥2025.
Formal foundations and support tools for the formal analysis and automated, scalable safety verification of railway signalling programs were developed. The method and automated framework (called SafeCap) have been successfully applied by railway companies in the UK.
An application for formal verification (using the proof assistant Isabelle/HOL) to ensure the correctness of scientific data processing software in the crystallographic domain was presented.
Molecular and bioinformatical analysis revealed the impact of a novel donor splice site variant in the SLC9A6 gene that leads to truncated and functionally disrupted protein causing the phenotype of CS in the affected individuals.
A proof theory of the sequent calculus of temporal logic was developed, providing loop check specification in backward proof search and proving that any loop consists of only cyclic sequents. A class of sequents was presented for which a backward proof search does not require a loop check.
A representation of Buridan's divided modal propositions that relies on the use of actualist quantification over variable domains was suggested. The formulas adequately capture the truth conditions given by Buridan, and they preserve all relations of the octagon, as well as permissible conversions in modal S5.
Detrended financial time series were researched.
A multi-objective optimisation algorithm of global search with a local refinement was proposed and investigated. The global search algorithm mimics the Bayesian multi-objective optimisation algorithm. A version of the Hooke鈥揓eeves algorithm is adapted for the local refinement of the approximation of the Pareto front.
Main publications:
1. Iliasov, Alexei; Taylor, Dominic; Laibinis, Linas; Romanovsky, Alexander. Practical verification of railway signalling programs, IEEE Transactions on Dependable and Secure Computing. Los Alamitos, CA: Institute of Electrical and Electronics Engineers Inc. ISSN 1545-5971. eISSN 1941-0018. 2022, first on line, p. [1-13]. DOI: 10.1109/TDSC.2022.3141555.
2. Petrauskas, Karolis; Merkys, Andrius; Vaitkus, Antanas; Laibinis, Linas; Gra啪ulis, Saulius. Proving the correctness of the algorithm for building a crystallographic space group, Journal of applied crystallography. Chester: International Union of Crystallography. ISSN 0021-8898. eISSN 1600-5767. 2022, vol. 55, no. 3, p. 515-525. DOI: 10.1107/S1600576722003107.
3. Raudys, 艩ar奴nas; Raudys, Aistis; Pabar拧kaite, 沤idrina; Liubavi膷i奴t臈, Au拧ra. Immunology-Based Sustainable Portfolio Management, Sustainability 2022, 14(5), 2531; DOI: 10.3390/su14052531.
4. Litvinas, Linas. A hybrid of Bayesian-based global search with Hooke鈥揓eeves local refinement for multi-objective optimization problems, Nonlinear analysis: modelling and control. Vilnius : Vilniaus universiteto leidykla. ISSN 1392-5113. eISSN 2335-8963. 2022, vol. 27, no. 3, p. 534-555. DOI: 10.15388/namc.2022.27.26558.
5. Alonderis, Romas; Pliu拧kevi膷ius, Regimantas Ri膷ardas; Pliu拧kevi膷ien臈, Aida; Giedra, Haroldas. Loop-check speci铿乧ation for a sequent calculus of temporal logic, Studia logica. Dordrecht: Springer. ISSN 0039-3215. eISSN 1572-8730. 2022, first on line, p. [1-30]. DOI: 10.1007/s11225-022-10010-9.
6. Dagys, Jonas; Pabijutait臈, 沤ivil臈; Giedra, Haroldas. Representing Buridan鈥檚 divided modal propositions in first-order logic, History and philosophy of logic. Abingdon : Taylor & Francis. ISSN 0144-5340. eISSN 1464-5149. 2022, vol. 43, iss. 3, p. 264-274. DOI:10.1080/01445340.2021.1976042.
7. Petraityt臈, Gunda; Mik拧tien臈, Violeta; Siavrien臈, Evelina; Cimbalistien臈, Loreta; Mald啪ien臈, 沤ivil臈; Ran膷elis, Tautvydas; Vait臈nien臈, Evelina Marija; Ambrozaityt臈, Laima; Dapk奴nas, Justas; Dzindzalieta, Ram奴nas; Pranckevi膷ien臈, Erinija; Ku膷inskas, Vaidutis; Utkus, Algirdas; Preik拧aitien臈, Egl臈. Donor splice site variant in SLC9A6 causes Christianson syndrome in a Lithuanian family: a case report, Medicina. Kaunas; Basel: LSMU; MDPI AG. ISSN 1010-660X. eISSN 1648-9144. 2022, vol. 58, no. 3, art. no. 351, p. [1-11]. DOI: 10.3390/medicina58030351.
8. Raudys, Aistis; Goldstein, Edvinas. Forecasting Detrended Volatility Risk and Financial Price Series Using LSTM Neural Networks and XGBoost Regressor, Journal of Risk and Financial Management, 2022, 15(12), 602; DOI: 10.3390/jrfm15120602.
9. Iliasov, Alexei; Laibinis, Linas; Taylor, Dominic; Lopatkin, Ilya; Romanovsky, Alexander. Safety invariant verification that meets engineers鈥 expectations, Reliability, safety, and security of railway systems. Modelling, analysis, verification, and certification: 4th international conference, RSSRail 2022, Paris, France, June 1鈥2, 2022: proceedings, editors: Simon Collart-Dutilleul, Anne E. Haxthausen, Thierry Lecomte. Cham: Springer, 2022. ISBN 9783031058134. eISBN 9783031058141. p. 20-31. (Lecture Notes in Computer Science, ISSN 0302-9743, eISSN 1611-3349; vol. 13294). DOI: 10.1007/978-3-031-05814-1.
10. Kadzhaia, Volodymyr; Raudys, Aistis. Distributed machine learning for IoT, 91桃色 Open Series: Konferencijos 鈥濴ietuvos magistrant懦 informatikos ir IT tyrimai鈥 darbai". 91桃色 Press, 2022. eISBN 9786090707425. eISSN 2669-0535. p. 36-43. DOI: 10.15388/LMITT.2022.4.
National Research Projects
Development of Terminological Dictionary of Analytic Metaphysics Based on the Works of S. Kripke, D. Lewis, A. Plantinga and W. V. O. Quine (No. P-MIP-22-334). Project initiated by a group of scientists. Dr H. Giedra. 2022-2025
The aim of the project is to create a comprehensive and scientific terminological dictionary of the core terms, concepts, and controversies of one of the most important fields of contemporary analytic philosophy 鈥 analytic metaphysics, in that way constituting a firm ground for the development of analytic metaphysics in Lithuania.
Investigation of Traditional Logic of Modalities Using Modern Logic Theories and Information Technology. (No P-MIP-19-51). Project initiated by a group of scientists. Dr H. Giedra. 2019鈥2022.
A representation of Buridan's divided modal propositions was achieved in the research, which relies on the use of actualist quantification over variable domains. The formulas adequately capture the truth conditions given by Buridan, and they preserve all relations of the octagon, as well as permissible conversions in modal S5.
Contractual Research
Investigation on the Transfer of Predictive Models to Microcontrollers for Efficient Energy Utilisation of Small Solar Power Generators (鈥楽mulki懦 saul臈s elektrini懦 elektros gamintoj懦 efektyvaus energijos panaudojimo valdiklio prognozavimo modeli懦 perk臈limo 寞 mikrokontrolerius tyrimai鈥) (01.2.1-MITA-T-851-05-0016). Contractual Project. Dr Aistis Raudys.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Pattern recognition and Applications LAB, Department of Electrical and Electronic Engineering, University of Cagliari (Italy)
University of Granada (Spain)
Department of Economics and Finance, LUISS Guido Carli, Rome (Italy)
School of Computing, Newcastle University (UK)
Office of the Government of the Republic of Lithuania
Elsis PRO (a Novian company) -leading provider of software solutions for defense, airspace, healthcare domains.
The Formal Route Ltd (UK) - tool developer company for mathematical modelling and safety verification of railway signalling designs
OTHER SCIENTIFIC ACTIVITIES
Prof. Habil. Dr 艩. Raudys
鈥 editorial board member of the journal Informatica,
Prof. L. Laibinis
鈥 program committee member of the International Workshop on Software Engineering for Resilient Systems (SERENE).
MOST IMPORTANT PARTICIPATION CASES OF RESEARCHERS IN WORKING GROUPS OR COMMISSIONS SET UP BY STATE AUTHORITIES, STATE AND MUNICIPAL INSTITUTIONS AND ORGANISATIONS, AND BUSINESS ENTITIES
Prof. R. Vaicekauskas
鈥 member of EnergyTech Digital group of association INFOBALT (representative of Lithuanian ICT industry). The association has more than 160 members, including national and global businesses, universities, colleges and research institutions involved in ICT education, employing more than 10,000 experienced ICT professionals, teachers and researchers.
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
Prof. R. Vaicekauskas
鈥 Presentation at Vilnius university 鈥淚nnoday 2022鈥: Artificial intelligence solutions for innovative business (鈥濪irbtinio intelekto sprendimai inovatyviam verslui鈥), 2022-10-21.
DEPARTMENT OF MATHEMATICAL COMPUTER SCIENCE
47 Didlaukio st., LT-08303 Vilnius
Tel. 219 5030
Email:
Head 鈥 Assoc. Prof. Dr Gintautas Bareikis
STAFF
Professors: Habil. Dr M. Bloznelis, Dr S. Gra啪ulis (part-time), Habil. Dr 沤. Luk拧ien臈 (part-time),
Associate professors: Dr G. Bareikis, Dr A. Ma膷iulis, Dr V. Stak臈nas, Dr V. Zacharovas.
Lecturers: I. Grinis.
Research fellow: Dr G. Alkauskas.
Doctoral student: D. Ardickas.
RESEARCH INTERESTS
鈥 Probabilistic analysis of number-theoretical structures
鈥 Combinatorial statistics
鈥 Random discrete structures and algorithms
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Analysis of Discrete Structures by Probabilistic, Combinatorial and Analytical Methods. Prof. M. Bloznelis, Assoc. Prof. A. Ma膷iulis. 2017鈥2022.
Asymptotic degree distribution in the community-affiliation graph was established.
A first-order asymptotic for the cover time of a random intersection graph just above the connectivity threshold was shown.
The two-term Edgeworth expansion was established for the distribution of a general asymptotically linear statistic under minimal smoothness conditions.
An application of formal verification (using the proof assistant Isabelle/HOL) for ensuring the correctness of scientific data processing software in the crystallographic domain was presented.
The generalisation of Dante's terza rima (the sequence 121 232 343 etc., here Q=3) was investigated, and its canonical definition was found. It has been proved that the canonical Q-tine for odd integer Q is unique.
Main publications:
1. Bloznelis, Mindaugas; Karjalainen, Joona; Leskel盲, Lasse. Assortativity and bidegree distributions on Bernoulli random graph superpositions, Probability in the engineering and informational sciences. New York: Cambridge University Press. ISSN 0269-9648. eISSN 1469-8951. 2022, vol. 36, iss. 4, p. 1188-1213. DOI: 10.1017/S0269964821000310.
2. Bloznelis, Mindaugas; Jaworski, Jerzy; Rybarczyk, Katarzyna. The cover time of a random walk in affiliation networks. IEEE transactions on information theory. Piscataway, NJ: IEEE. 2022, vol. 68, no. 9, p. 6134-6150, ISSN: 0018-9448, eISSN: 1557-9654, DOI: 10.1109/TIT.2022.3169775.
3. Bloznelis, Mindaugas; G枚tze, Friedrich. Edgeworth approximations for distributions of symmetric statistics, Probability theory and related fields. Heidelberg: Springer. ISSN 0178-8051. eISSN 1432-2064. 2022, vol. 183, iss. 3-4, p. 1153-1235. DOI: 10.1007/s00440-022-01144-x.
4. Petrauskas, Karolis; Merkys, Andrius; Vaitkus, Antanas; Laibinis, Linas; Gra啪ulis, Saulius. Proving the correctness of the algorithm for building a crystallographic space group, Journal of applied crystallography. Chester: International Union of Crystallography. ISSN 0021-8898. eISSN 1600-5767. 2022, vol. 55, no. 3, p. 515-525. DOI: 10.1107/S1600576722003107.
5. Alkauskas, Giedrius. Matematika, kalba, poezija: s膮veikos ir traukos = Mathematics, language, poetry: interactions and attractions, Acta Linguistica Lithuanica. Vilnius: Lietuvi懦 kalbos institutas. ISSN 1648-4444. eISSN 2669-218X. 2022, no. 86, p. 227-257. DOI: 10.35321/all86-10.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Aalto University (Finland)
Poznan Adam Mickiewicz university (Poland)
Bielefeld university (Germany)
OTHER RESEARCH ACTIVITIES
Dr G. Alkauskas
鈥 member of the Lithuanian Mathematical Society,
鈥 member of the American Mathematical Society,
Assoc. Prof. G. Bareikis
鈥 member of the Lithuanian Mathematical Society,
Prof. M. Bloznelis
鈥 editorial board member of the Lithuanian Mathematical Journal, ;
鈥 member of the Lithuanian Mathematical Society,
Assoc. Prof. A. Ma膷iulis
鈥 member of the Lithuanian Mathematical Society,
Assoc. Prof. V. Stak臈nas
鈥 member of the Lithuanian Mathematical Society,
鈥 member of the American Mathematical Society,
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
Dr G. Alkauskas
鈥 TV program about Hermann Minkowski on Lithuanian national TV, two lessons for TV project "The school of creativity" (Lithuanian National Television).
鈥 member of LATGA,;
鈥 member of AGATA, .
DEPARTMENT OF SOFTWARE ENGINEERING
47 Didlaukio st., LT-08303 Vilnius
Tel. 219 5040
E-mail:
Head 鈥 Dr Linas Petkevi膷ius
STAFF
Professor: Dr R. Baronas.
Partnership professors: Dr V. A拧eris (part-time), Dr E. Pakalnickas (part-time), Dr E. Pakalnickien臈 (part-time), Dr D. Sauli奴nas (part-time), Dr A. 艩ermokas (part-time).
Associate professors: Dr S. Ragai拧is, Dr S. Dapk奴nas, Dr K. Lapin, Dr K. Petrauskas (part-time), Dr Valentas Gru啪auskas (part-time), Dr 沤. Ledas (part-time), Dr T. Ustinavi膷ius (part-time), Dr V. 膶yras.
Associate partnership professors: V. Pozdniakov (part-time), J. Matuzas (part-time), Dr V. Jusevi膷ius (part-time), Dr G.Alzbutas (part-time).
Assistants: Dr V. Valaitis, Dr T. Plankis.
Junior Assistant: B. Dapk奴nas (part-time).
Lecturers: S. Girdzijauskaite (part-time), D. Kimutis (part-time), L. Sakson (part-time), J. Ragai拧is (part-time), G. Rim拧a (part-time), V. Savin (part-time), T. Smagurauskas (part-time), K. Uosis (part-time), Dr A. Vaitkevi膷ien臈 (part-time), A. Jankus (part-time), D. Juostas (part-time), V. Lapin (part-time), D. Nikolajev (part-time), A. 艩imkus (part-time), R. 沤ag奴nien臈 (part-time), J. 沤ag奴nas (part-time).
Postdoctoral researcher: D. 沤il臈nait臈-Petrulaitien臈
Doctoral student: 叠.顿补辫办奴苍补蝉.
RESEARCH INTERESTS
鈥 Software process modelling, assessment, and improvement
鈥 Security and usability in user experience design.
鈥 Formal methods in software engineering for distributed systems
鈥 Modelling and computational calculations
鈥 Quantum computing algorithms
鈥 Legal informatics and artificial intelligence
鈥 Deep learning and its applications
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Modelling of Computerised Systems and their Development Process. Assoc. Prof. K. Petrauskas. 2019鈥2022.
An application of formal verification (using the proof assistant Isabelle/HOL) for ensuring the correctness of scientific data processing software in the crystallographic domain was presented.
It was demonstrated that the combination of extrusion-fermentation treatment can be confirmed as a prospective functionalisation of CMB as feed/food stock capable of potentially reducing microbial contamination, enhancing its nutritional value, and improving technological properties of CMB albumins and globulins and digestibility and bioactivity of prolamins.
Long short-term memory (LSTM) and Transformer neural network models were developed and investigated for the classification of different conveyor belt conditions.
Main publications:
1. Petrauskas, Karolis; Merkys, Andrius; Vaitkus, Antanas; Laibinis, Linas; Gra啪ulis, Saulius. Proving the correctness of the algorithm for building a crystallographic space group, Journal of applied crystallography. Chester: International Union of Crystallography. ISSN 0021-8898. eISSN 1600-5767. 2022, vol. 55, no. 3, p. 515-525. DOI: 10.1107/S1600576722003107.
2. 沤virblis, Tadas; Petkevi膷ius, Linas; Bzinkowski, Damian; Vaitkus, Dominykas; Vaitkus, Pranas; Rucki, Miros艂aw; Kilikevi膷ius, Art奴ras. Investigation of deep learning models on identification of minimum signal length for precise classification of conveyor rubber belt loads, Advances in mechanical engineering. London: SAGE Publishing. ISSN 1687-8132. eISSN 1687-8140. 2022, vol. 14, no. 6, p. [1-13]. DOI: 10.1177/16878132221102776.
3. Zadeike, Daiva; Gaizauskaite, Zydrune; Svazas, Mantas; Gruzauskas, Romas; Gruzauskas, Valentas; Damasius, Jonas; Juodeikiene, Grazina. Application of solid鈥恠tate fermentation for the improving of extruded corn dry鈥恗illing by鈥恜roducts and their protein functional properties, Life. Basel: MDPI. ISSN 2075-1729. 2022, vol. 12, iss. 11, art. no. 1909, p. 1-18.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
National Cancer Institute (Lithuania)
National Center of Pathology, Affiliate of 91桃色 Hospital Santaros Klinikos (Lithuania)
IOTA Foundation (Germany)
Vienna University (Austria)
OTHER RESEARCH ACTIVITIES
Assoc. Prof. Linas Petkevi膷ius
鈥 Editorial board member of the Nonlinear Analysis: Modelling and Control Journal,
鈥 Board member of Artificial Intelligence Association of Lithuania (AIAL)
鈥 Member of Institute of Electrical and Electronics Engineers (IEEE)
鈥 Member of Lithuanian Computer Society (LIKS)
Prof. R. Baronas
鈥 deputy editor-in-Chief of the Nonlinear Analysis: Modelling and Control Journal, ;
鈥 editorial board member of the Baltic Journal of Modern Computing Journal, ;
鈥 editorial board member of the International Journal of Artificial Intelligence,
鈥 editorial board member of the journal Informatica, ; member of Association for Computing Machinery (ACM).
鈥 Chairman of Research Council of Lithuania,
Assoc. Prof. V. 膶yras
鈥 Program committee member at IRIS 2022, International Legal Informatics Symposium, Salzburg ,
鈥 Program committee member at EGOVIS 2022, The 11th International Conference on Electronic Government and the Information Systems Perspective,
Assoc. Prof. K. Lapin
鈥 Scientific collaboration with the Systems Research Institute of the Polish Academy of Sciences, prof. Ignacy Kaliszewski鈥檚 scientific group.
Assoc. Prof. S. Ragai拧is
鈥 advisory board member of International project Enterprise SPICE,
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
Dr Linas Petkevi膷ius
鈥 Dirbtinis intelektas: u啪 mitais apipint懦 gr臈smi懦 slypi berib臈s galimyb臈s.
Dr Kristina Lapin
鈥 鈥濱T diplomas 鈥 karjeros garantas ar tik formalumas?鈥.
鈥 Taisykl臈s darbo rinkoje kei膷iasi: tr奴kstant darbuotoj懦, 寞mon臈s pa膷ios 寞sitraukia 寞 ugdymo proces膮, ETAPLIUS - Taisykl臈s darbo rinkoje kei膷iasi: tr奴kstant darbuotoj懦, 寞mon臈s pa膷ios 寞sitraukia 寞 ugdymo proces膮
Dr 沤ilvinas Ledas
鈥 Atvira paskaita: Fizika 啪aidimams nuo nulio,
鈥 Tai tiek. Video啪aidimai u啪kariauja pasaul寞.
鈥 MIF absolventai pristat臈 did啪iausi膮 kompiuterin寞 啪aidim膮 apie Lietuvos istorij膮.
Dr Vytautas A拧eris
鈥 LOGIN festivaliui u啪v臈rus duris, organizatoriai jau turi ambicing懦 plan懦 kitiems metams
鈥 Pasi奴l臈 b奴d膮, kaip 寞mon臈ms sugeneruoti didesn寞 peln膮: skai膷iai 鈥 i拧kalbingi
鈥 EBIT LV. Vadov懦 konferencija.
Dr Vytautas 膶yras
鈥 Dirbtinio intelekto politikos, teis臈s ir etikos i拧拧奴kiai,
47 Didlaukio st., LT-08303 Vilnius
Tel. 219 5002
E-mail: ,
Head 鈥 Assoc. Prof. Dr Linas Bukauskas
STAFF
Associate professors: Dr A. Brilingait臈, Dr L. Bukauskas, Dr K. Lapin
Lecturers: V. Krinickij, E. Kutka
Researchers: (snr. r.) Dr L. Ambrozaityt臈, (snr. r.) Dr I.Domarkien臈, (snr. r) Dr D. Lepait臈
Laboratory assistants: M. Gaubas (part-time), A.Baurait臈, R. Andrijauskait臈
Internships: D. Singh
Visiting professors: Dr Stefan Sutterlin (Norway) and Dr Ricardo Gregorio Lugo (Norway), Dr Ginta Majore (Latvia), Dr R奴ta Pirta-Dreimane (Latvia), Dr Kaie Maennel (Estonia), Dr Olaf Maennel (Estonia)
RESEARCH INTERESTS
鈥 Computer networks
鈥 Cloud and parallel computing, virtualisation
鈥 Cyber security
鈥 Digital forensics
鈥 Training environments for cybersecurity
鈥 Education in computer science and cybersecurity
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Research on the Detection of Premeditated Security Vulnerabilities in Mobile Applications and New Efficient Tkhc-Based Image Sharing Scheme Over Unsecured Channels. 2019鈥2022.
The rising numbers and sophistication of security threats in the digital domain cause an increase in the demand for skilled cybersecurity professionals. In response, cybersecurity exercises, and in particular, cyber defence exercises (CDX), are becoming ever more popular. They provide a training platform to simulate real-life situations. CDX are significant events involving months of preparation, and previous studies show a lack of objective evidence of their relevance regarding the learning impact. The skills of participants in the exercise are usually different and vary from tech-savvy to beginners. Also, the trainees are diverse when considering their background, current work profile (position and institution), and experience. An assessment of their competencies is essential to ensure quality in training. The project aims were to investigate information-sharing techniques during CDX events and cryptographic methods for efficient video image sharing.
Main publications:
1. Mahmoud E., Hodeish; Bukauskas, Linas; Vikas T., Humbe. A new efficient TKHC-based image sharing scheme over unsecured channel, Journal of King Saud University - Computer and information sciences. Amsterdam : Elsevier. ISSN 1319-1578. eISSN 2213-1248. 2022, vol. 34, no. 4, p. 1246-1262. DOI: 10.1016/j.jksuci.2019.08.004.
2. Brilingait臈, Agn臈; Bukauskas, Linas; Juozapavi膷ius, Au拧rius; Kutka, Eduardas. Overcoming information-sharing challenges in cyber defence exercises, Journal of cybersecurity. Oxford : Oxford University Press. ISSN 2057-2085. eISSN 2057-2093. 2022, vol. 8, no. 1, p. [1-9]. DOI: 10.1093/cybsec/tyac001.
3. Juozapavi膷ius, Au拧rius; Brilingait臈, Agn臈; Bukauskas, Linas; Lugo, Ricardo Gregorio. Age and gender impact on password hygiene, Applied sciences: Special issue: State-of-the-art of cybersecurity. Basel: MDPI. eISSN 2076-3417. 2022, vol. 12, iss. 2, art. no. 894, p. [1-15]. DOI: 10.3390/app12020894.
4. Kvietinskait臈, Gabriel臈; Bukauskas, Linas; Krinickij, Virgilijus. Cyber security table-top exercise gamification with dynamic scenario for qualification assessment, Communications in computer and information science: vol. 1654: 24th International Conference on Human-Computer Interaction, HCII 2022, Virtual Event, June 26鈥揓uly 1, 2022, Proceedings, Part I. Cham : Springer Verlag, 2022. ISBN 9783319975702. ISSN 1865-0929. eISSN 1865-0937. 2022, 1654, p. 54-62. DOI: 10.1007/978-3-031-19679-9_8.
Research Projects
Development of the National Cybersecurity Competence Map (Nacionalinio kibernetinio saugumo kompetencij懦 啪em臈lapio k奴rimas) (Reg. No. S-REP-21-2). Dr L. Bukauskas, Dr A. Brilingait臈, Dr D. Lepait臈. 2021鈥2022.
This project aims to prepare the first Lithuanian cyber competence map together with recommendations on how to attract specialists to the Cybersecurity (CS) sector and how to advance their competencies. During the project, we will explore the demand for CS specialists in Lithuania and the world and survey the opinions of CS professionals, management, and specialists from private and public sector organisations, including the national defence sector. Also, we will determine the career path of the specialists, analyse job offers, distinguish work roles, and gather the findings and recommendations from scientific research papers and similar reports of other countries. The results of the project will include a publicly available database of collected data, expert findings of the research and recommendations for stakeholders, and a scientific article will be published to promote the results.
Main publications:
1. Bukauskas, Linas; Brilingait臈, Agn臈; Ikamas, K臋stutis; Juozapavi膷ius, Au拧rius; Lepait臈, Daiva. Lietuvos kibernetinio saugumo kompetencij懦 啪em臈lapis = Cybersecurity competence map of Lithuania. Vilnius: Vilniaus universitetas, 2022. 160. DOI: 10.15388/CIBERSEK.2022.
2. Linas Bukauskas, Agn臈 Brilingait臈, Daiva Lepait臈, Au拧rius Juozapavi膷ius and K臋stutis Ikamas. Lietuvos 寞moni懦 vadov懦 ir specialist懦 apklausa kibernetinio saugumo klausimais [Data set]. 2022. DOI: 10.18279/MIDAS.CIBERSEK_CEO_HR_CSS_LT.188843.
3. Linas Bukauskas, Agn臈 Brilingait臈, Daiva Lepait臈, Au拧rius Juozapavi膷ius and K臋stutis Ikamas. Lietuvos 寞moni懦 darbo skelbim懦 kibernetiniame saugumo rol臈se tyrimas [Data set]. 2022. DOI: 10.18279/MIDAS.CIBERSEK_JOB_ADDS_LT.188854.
ADVANCES: Advancing Human Performance in Cybersecurity (LT08-2-LMT-K-01-051). Baltic Research Programme EEA Grant (Project contract No S-BMT-21-6). Project leader: Dr A. Brilingait臈. Dr L. Bukauskas, Dr K. Lapin. 2021鈥2023.
This project focuses on human performance improvement. Human error is the leading cause of data and security breaches. It has been proven in many cyber crises that the strength of the cyber resiliency capability is highly related to the resiliency of a human at play and the coordinated actions of relevant actors. The cybersecurity strategies of the three Baltic countries unanimously emphasise the lack of cybersecurity specialists and the need to fill this gap by strengthening knowledge exchange and education programmes. A coherent interdisciplinary approach that encompasses technology and human aspects is crucial to create new innovative training methods and environments in order to overcome the rising security problems. This project aims to establish a new interdisciplinary collaborative network among leading Baltic, Liechtenstein, and Norwegian research institutions. The network has been supported by national/international organisations and a private sector company. The recent development of crisis (such as COVID-19) handling shows the impact of digital technologies where human behaviour and a comprehensive understanding of cybersecurity surpass infrastructural technological solutions. Most economic sectors in Europe depend increasingly on protection against cybercrime. Moreover, IT security workers should be prepared for the future cyber crisis that may have a devastating impact on the national economy and security. The close and continuous cross-border cooperation with the national/international institutions and the private company ensures that the research outcomes will help fulfil these objectives. The project will further increase the sustainability of the outcomes by implementing long-term educational training schemes, ongoing student-/staff mobility between academic partners, involving students in private enterprises, and the integration of private enterprises into educational development.
Main publications:
1. M盲ses, Sten; Maennel, Kaie; Brilingait臈, Agn臈. Trends and challenges for balanced scoring in cybersecurity exercises: A case study on the example of Locked Shields, Frontiers in education. Lausanne: Frontiers Media S.A. eISSN 2504-284X. 2022, vol. 7, art. no. 958405, p. [1-13]. DOI: 10.3389/feduc.2022.958405.
2. Pirta-Dreimane, R奴ta; Brilingait臈, Agn臈; Majore, Ginta; Knox, Benjamin James; Lapin, Kristina; Parish, Karen; S眉tterlin, Stefan; Lugo, Ricardo Gregorio. Application of intervention mapping in cybersecurity education design, Frontiers in education. Lausanne: Frontiers Media SA. eISSN 2504-284X. 2022, vol. 7, art. no. 998335, p. [1-12]. DOI: 10.3389/feduc.2022.998335.
3. Pirta-Dreimane, R奴ta; Brilingait臈, Agn臈; Roponena, Evita; Parish, Karen. Multi-dimensional cybersecurity education design: a case study, The 7th IEEE Cyber Science and Technology Congress (CyberSciTech 2022). September 12-15, 2022, Calabria, Italy. Piscataway, NJ: IEEE, 2022. ISBN 9781665462976. p. [1-8]. DOI: 10.1109/DASC/PiCom/CBDCom/Cy55231.2022.9927931.
Increasing Security-Awareness: The Invisible Power of Digital Traces (Agreement No. 2022/8). The Baltic-German University Liaison Office is supported by the German Academic Exchange Service (DAAD) with funds from the Foreign Office of the Federal Republic of Germany. Project Leader: Dr A. Brilingait臈. Dr L. Bukauskas.
Due to the digitalisation of public sectors and the professional environment, cybersecurity research and study areas have become central to ensuring service continuity and protecting private and sensitive data. The education of the cyber workforce focuses on hard IT skills and ignores personality features. As for the general population, the typical recommendations and focus lie on personal account and data protection, e. g. authentication methods, password length and wording, and awareness of phishing techniques. Cybersecurity incidents are becoming more advanced, and their scope is beyond the technical implementation of the attack. In the cyber-kill chain, humans can be a weapon, target, and tool to disturb services, steal data, destroy personal and company reputations, and trigger a political crisis. Social engineering attacks can be prepared using data from cyberspace 鈥 digital traces 鈥 to target human weaknesses. The advent of AI-based social engineering tools may become a game-changer in the cybercrime context in the near future. We aim to research human behaviour when solving cybersecurity tasks related to various digital traces and aim to widen the scope towards new trends pointing at future cybersecurity challenges. The project team will establish collaboration for further study and research activities in the interdisciplinary approach of cybersecurity, psychology, and education.
MAIN RESEARCH ACHIEVEMENTS IN 2022
Overcoming Information Sharing Challenges in Cyber Defence Exercises, Journal of Security Oxford University Press.
Remapping Cybersecurity Competences in a Small Nation State, Haliyon, Elsevier.
Age and Gender Impact on Password Hygiene, Applied sciences: Special issue: State-of-the-art of cybersecurity, MDPI.
Trends and challenges for balanced scoring in cybersecurity exercises: A case study on the example of Locked Shields, Frontiers in education. Lausanne: Frontiers Media S.A.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Armed forces of Lithuania (Lithuania)
Aalborg University (Denmark)
Albstadt-Sigmaringen University (Germany)
General Jonas 沤emaitis Military Academy of Lithuania (Lithuania)
Norwegian University of Technical and Natural Sciences 鈥 NTNU (Norway)
Liechtenstein University (Liechtenstein)
脴stfold University College (Norway)
University of Padua (Italy)
Riga Technical University (Latvia)
Strategeens, JSC (Lithuania)
Tallinn Technical University (Estonia)
Tartu university (Estonia)
Vidzeme University of Applied Sciences (Latvia)
OTHER RESEARCH ACTIVITIES
Assoc. Prof. A. Brilingait臈
鈥 member of Association for Computing Machinery (ACM), .
鈥 Guest Associate Editor in Journal of Frontiers in Education special issue The Human Factor in Cyber Security Education
鈥 Member of Women4Cyber Lithuania chapter
鈥 Reviewer of Computer & Security Journal, Elsevier
Assoc. Prof. L. Bukauskas
鈥 Reviewer of Computer & Security Journal, Elsevier
鈥 Board member of Technical Committee No. 86 for Digital geographic information at the Department of Standardization.
鈥 Guest Associate Editor in Journal of Frontiers in Education special issue The Human Factor in Cyber Security Education
鈥 Member of IEEE organization
MOST IMPORTANT PARTICIPATION CASES OF RESEARCHERS IN WORKING GROUPS OR COMMISSIONS SET UP BY STATE AUTHORITIES, STATE AND MUNICIPAL INSTITUTIONS, ORGANISATIONS, BUSINESS ENTITIES
Assoc. Prof. L. Bukauskas
鈥 Member of the National Cyber Security Board under Ministry of Defense of the Republic of Lithuania;
鈥 Expert/Reviewer of research projects and proposals, European Commission
鈥 Expert/Monitor of executed research projects, European Commission.
鈥 BlueTeam member, Joint LTU-POL LockedShields 2022 (Vilnius), NATO CCDCOE.
鈥 EXCON, POC, AmberMist 2022 (Vilnius), Armed Forces of Lithuania.
鈥 Vice-President of non-profit organisation Geens.com vzw, Belgium.
Assoc. Prof. A. Brilingait臈
鈥 Yellow Team member, LockedShields (Tallin) 2022, NATO CCDCOE.
鈥 Team lead Evalution Team, AmberMist (Vilnius), 2022, Armed Forces of Lithuania.
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
1. Brilingait臈, Agn臈 (autorius, interviu, duodantis); Bukauskas, Linas (interviu, duodantis); Juozapavi膷ius, Au拧rius (interviu, duodantis); Carlisle, Kathryn (interviu, imantis). Locking the door at night - cybervigilance // EEAgrants.org News. Brussels : EEA and Norway Grants. 2022.
2. Brilingait臈, Agn臈. Tyrimo apie kibernetinio saugumo kompetencijas Lietuvoje 寞啪valgos, Cyber piknikas, [2022 m.] rugs臈jo 19 d., Vilnius. Vilnius : Women4Cyber Lithuania. 2022, p. [1-21]. DOI: 10.13140/RG.2.2.32820.73605.
3. Burokas, Vaidotas; Bukauskas, Linas (interviu, duodantis); Ramanavi膷ius, Ar奴nas (interviu, duodantis); Osterlund, Jowan (interviu, duodantis). Implantuot膮 mikroschem膮 po oda turintis Andrius d臈l duomen懦 saugumo nesijaudina: 啪ymiai didesn臈 gr臈sm臈 yra pamesti mobil懦 telefon膮, LRT.lt. Vilnius. 2022, p. [1].
鈥
24 Naugarduko st., LT鈥03225 Vilnius
Tel.: 219 3085
E-mail
Director 鈥 Prof. Dr Jonas 艩iaulys
STAFF
Professors: Dr G. Bak拧tys (Partnership), Dr P. Drungilas, Dr R. Garunk拧tis (part-time), Habil. Dr A. Laurin膷ikas (Emeritus), Dr A. Linartas (Partnership), Habil. Dr E. Manstavi膷ius (Emeritus), Habil. Dr V. Paulauskas (Emeritus), Dr J. 艩iaulys
Associate professors: Dr A. Bal膷i奴nas, Dr D. Dzindzalieta, Dr A. Elijio, Dr A. Grigutis, Dr J. Jankauskas (part-time), Dr R. Ka膷inskait臈, I. Mikul臈nas (Partnership), Dr M. Manstavi膷ius, Dr E. Maz臈tis. Dr A. Novikas, Dr R. 艩im臈nas
Chief research fellows: Dr R. Garunk拧tis (part-time), Habil. Dr A. Dubickas
Senior research fellows: Dr J. Jankauskas (part-time)
Assistants: G. Bagdonas (part-time), Dr J. Damarackas, Dr R. Gylys (part-time), Dr E. Globien臈 (part-time), Dr E. Jaun臈(part-time), Dr A. Ka膷臈nas, Dr A. Lenk拧as(part-time), Dr A. Sku膷ait臈, Dr V. Stepas, Dr R. Tamo拧i奴nas (part-time), Dr A. Zinevi膷ius
Junior assistants: E. Gutauskait臈, G. Liaudanskait臈, L. Maciulevi膷ius. S. Pauk拧tys, J. Sprindys
Lecturers: 艩. Dirmeikis
Affiliated professors: Habil. Dr V. Mackevi膷ius, Dr G. Stepanauskas
Affiliated associate professors: Dr R. Ka拧uba, Dr R. Kud啪ma, Dr G. Misevi膷ius, Dr A. Plikusas
Doctoral students: M. Dirma, G. Gangopadhyay, E. Gutauskait臈, M. Jasas, G. Junevi膷ius, V. Jurgelevi膷ius, J. Karasevi膷ien臈, A. Karbonskis, L. Klebonas, T. Kondratavi膷ius, T. Kuras, V. Luk拧ien臈, L. Maciulevi膷ius, T. Mikalauskait臈, G. Mongirdait臈, M. Montessinos, A. Nakliuda, N. Nakliuda, R. Norbutait臈, S. Pauk拧tys, R. Prigodin, R. Pui拧ys, M. Savitien臈(Tekor臈), J. Sprindys, A. 艩mergelyt臈, P. Virbalas, B. 沤emaitien臈
DEPARTMENTS OF INSTITUTE
Department of Mathematical Analysis
Department of Probability Theory and Number Theory
Analytic Number Theory Group
The Center for Mathematics Education
RESEARCH AREAS
鈥 Fundamental mathematics: number theory, probability theory and stochastic analysis, risk theory.
鈥 Applied mathematics: methods of mathematical statistics, mathematical modelling, finance and insurance mathematics, modern elementary mathematics and didactics.
MAIN CONFERENCES ORGANIZED IN 2022
The Lithuanian Conference in Probability Theory and Number Theory was dedicated to the 100th anniversaries of Lithuanian universities, the Department of Mathematical Analysis and the Department of Geometry. Palanga. 5鈥10 September 2022.
BEST REPORTS DELIVERED AT CONFERENCES ABROAD 2022
1. R.Garunk拧tis. Zeros of the Riemann zeta-function and of its derivative. Conference on elementary and analytic number theory ELAZ 2022. 22-26 August 2022, Poznan, Poland.
2. Dubickas. Number fields without generators of small Mahler measure, Equidistribution and Arithmetic Dynamics, Oklahoma State University June 20-24, 2022
3. G. Liaudanskait臈. Compound Poisson approximations to sums of extrema of Bernoulli variables. 28th Nordic Congress of Mathematicians.18 - 21 August 2022, Aalto University, Finland.
4. R. Leipus, S. Pauk拧tys, J. 艩iaulys. Tails of moments of sums with heavy-tailed summands and applications to the Haezendonck-Goovaerts risk measure. European Actuarial Journal Conference 2022. August 22鈥24, Tartu, Estonia.
5. M. Manstavi膷ius. Concordance measures generalizing Kendall鈥檚 tau. 16th International Conference on Computational and Financial Econometrics (CFE 2022) and 15th International Conference of the ERCIM (European Research Consortium for Informatics and Mathematics) Working Group on Computational and Methodological Statistics (CMStatistics 2022). London, 17-19 December 2022.
MAIN SCIENTIFIC ACHIEVEMENTS IN 2022
During the year, 32 articles were published in scientific publications with an impact factor in the ISI Web of Science database.
The transcendency of some constants that occur as limits of sequences arising from polynomial iterations has been established. This implies that some constants from Sloane's Online Encyclopedia of Integer Sequences are not only irrational (as known before) but also transcendental.
Popular concordance measures such as Spearman's rho, Kendall's tau, etc., were generalised by employing special nonlinear functions; new examples provide higher-degree polynomial- concordance measures, as well as non-polynomial-type concordance measures, showing the richness of this set.
The limiting behaviour of Conditional Tail Expectation is established for a sum of real-valued and tail-dependent random variables with regularly varying distributions.
New algorithms for calculating survival probability for discrete-time inhomogeneous risk models have been found.
Two absolutely convergent Dirichlet series close to the Riemann and Hurwitz zeta-functions are constructed, and it is proved that the set of their shifts approximating a pair of analytic functions has a positive density.
Joint weighted universality theorems are proved concerning the simultaneous approximation of a collection of analytic functions by a collection of shifts of Hurwitz zeta-functions with suitable parameters.
DEPARTMENT OF MATHEMATICAL ANALYSIS
24 Naugarduko st., LT-03225 Vilnius
Tel.: 219 3085
E-mail
Head 鈥 Prof. Dr Jonas 艩iaulys
STAFF
Professors: Dr G. Bak拧tys (Partnership), Dr A. Linartas (Partnership), Habil. Dr V. Paulauskas (Emeritus), Dr J. 艩iaulys
Associate professor: Dr D. Dzindzalieta, Dr A. Elijio, Dr M. Manstavi膷ius, I. Mikul臈nas (Partnership)
Assistants: Dr G. Bagdonas, Dr J. Damarackas, Dr E. Globien臈, Dr R. Gylys, Dr E. Jaun臈, Dr A. Lenk拧as, Dr A. Sku膷ait臈
Research assistants: E. Gutauskait臈, J. Karasevi膷ien臈, G. Liaudanskait臈, S. Pauk拧tys, J. Sprindys.
Lecturers: 艩. Dirmeikis
Affiliated professors: Habil. Dr V. Mackevi膷ius, Dr G. Stepanauskas
Affiliated associate professors: R. Ka拧uba, R. Kud啪ma, A.E. Plikusas
Doctoral students: M. Dirma, E. Gutauskait臈, V. Jurgelevi膷ius, J. Karasevi膷ien臈, T. Kuras, G. Mongirdait臈, A. Nakliuda, N. Nakliuda, R. Norbutait臈, S. Pauk拧tys, R. Prigodin, R. Pui拧ys, J. Sprindys
RESEARCH INTERESTS
鈥 Mathematical analysis
鈥 Heavy-tailed distributions
鈥 Probability limit theorems
鈥 Stochastic analysis
鈥 Actuarial mathematics
鈥 Financial mathematics
鈥 Risk theory
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Nonhomogeneous Stochastic Models and Their Applications in Financial and Actuarial Mathematics. Prof. J. 艩iaulys. 2020鈥2023.
The limiting behaviour of Conditional Tail Expectation is established for a sum of real-valued tail-dependent random variables with regularly varying distributions. The results obtained show that each positive random effect transforms the initial survival function into a new absolutely continuous survival function. A special class of functions that generate bivariate copulas has been found. Properties of Hakel-like determinants have been found to support algorithms for calculating survival probabilities in a discrete-time risk model with a special premium.
Main publications:
1. Jaun臈, E., 艩iaulys, J. Asymptotic risk decomposition for regularly varying distributions with tail dependence. Applied Mathematics and Computation. 2022. 427: 127164..
2. Manstavi膷ius, M., Bagdonas, G. A class of bivariate independence copula transformations. Fuzzy Sets and Systems. 2022. 428: 58-79.
3. Grigutis, A., Jankauskas, J. On 2x2 determinants originating from survival probabilities in homogeneous discrete time risk model. Results in Mathematics. 2022. 77: 204.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Taras Shevchenko National University of Kyiv (Ukraine)
M盲lardalen University (Sweden)
University of Siegen (Germany)
Tartu University (Estonia)
University of Bonn (Germany)
Soochow University (China)
Nanjing Audit University (China)
Polish Academy of Science, Institute of Mathematics (Poland)
OTHER SCIENTIFIC ACTIVITIES
Affiliated Prof. V. Mackevi膷ius
鈥 section editor of the Lithuanian Mathematical Journal;
鈥 copyeditor of the Lithuanian Mathematical Journal;
鈥 member of the Lithuanian Mathematical Society,
Prof. V. Paulauskas (Emeritus)
鈥 editor-in-Chief board member of the Lithuanian Mathematical Journal;
鈥 member of the American Mathematical Society, ;
鈥 board member of the Lithuanian Mathematical Society,
鈥 member of the International Statistical Institute, ;
鈥 board member of the Lithuanian Statistical Society,
Prof. J. 艩iaulys
鈥 editorial board member of the Lithuanian Mathematical Journal;
鈥 editorial board member of the Modern Stochastics: Theory and Applications;
鈥 editorial board member of the Nonlinear Analysis: Modelling and Control;
鈥 member of the Lithuanian Mathematical Society, ;
鈥 reviewer for Mathematical Reviews;
鈥 reviewer for Zentralblatt MATH.
Affiliated Prof. G. Stepanauskas
鈥 member of the Lithuanian Mathematical Society, ;
鈥 reviewer for Mathematical Reviews.
Assoc. Prof. M. Manstavi膷ius
鈥 president of the Lithuanian Statistical Society,
鈥 member of the Lithuanian Mathematical Society
鈥 reviewer for Mathematical Reviews.
Dr A. Sku膷ait臈
鈥 member of the Lithuanian Actuarial Society
鈥 member of Social Security Committee at International Actuarial Association.
鈥 member of Board of Health Section of International Actuarial Association.
Dr R. Gylys
鈥 member of the Lithuanian Actuarial Society
鈥 member of Insurance Accounting Committee of International Actuarial Association.
Dr A. Linartas
鈥 member of the Committee of European Auditing Oversight Bodies (CEAOB).
鈥 member of The International Forum of Independent Audit Regulators (IFIAR).
鈥 chairman of the Audit Committee of the European Investment Bank (EIB).
鈥 member of the Business Accounting Standards Committee.
鈥 member of Public Sector Accounting and Financial Reporting Standards.
S. Pauk拧tys
鈥 member of the Lithuanian Actuarial Society,
鈥 member of the Lithuanian Mathematical Society,
DEPARTMENT OF PROBABILITY THEORY AND NUMBER THEORY
24 Naugarduko st., LT鈥03225 Vilnius
Tel.: 219 3059
E-mail:
Head 鈥 Prof. Habil. Dr Art奴ras Dubickas
STAFF
Professors: Dr P. Drungilas, Habil Dr A. Laurin膷ikas (Emeritus), Habil. Dr E. Manstavi膷ius (Emeritus)
Associate professors: Dr A. Bal膷i奴nas, Dr J. Jankauskas (part-time), Dr R. Ka膷inskait臈, Dr E. Maz臈tis, Dr A. Novikas
Chief research fellows: Habil. Dr A. Dubickas
Senior research fellows: Dr J. Jankauskas (part-time)
Assistants: Dr A. Ka膷臈nas Dr V. Stepas, Dr A. Zinevi膷ius
Affiliated associate professor: Dr R. Ka拧uba, Dr G. Misevi膷ius
Junior assistant: L. Maciulevi膷ius
Doctoral students: G. Gangopadhyay, M. Jasas, G. Junevi膷ius, A. Karbonskis, L. Klebonas, V. Luk拧ien臈, L. Maciulevi膷ius, M. Montessinos, M. Savitien臈(Tekor臈), A. 艩mergelyt臈, P. Virbalas, B. 沤emaitien臈
RESEARCH INTERESTS
鈥 Algebraic numbers and polynomials
鈥 Analytic number theory
鈥 Combinatorics
鈥 Probabilistic number theory
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Problems of Number Theory and Investigation of Roots of Polynomials. Prof. A Drungilas, Prof. A. Garunk拧tis, Prof. A. Dubickas, Prof. A. Laurin膷ikas, Prof. E. Manstavi膷ius. 2019鈥2023.
We proved an effective version of the primitive element theorem and established the transcendency of some constants obtained from iterations of polynomials.
A few effective bounds for the variance of statistics defined on random combinatorial structures were obtained.
We proved that the sequence of imaginary parts of the Lerch zeta function is uniformly distributed modulo one.
Joint universality theorems with generalised shifts for the Riemann zeta-function and Dirichlet L-functions were obtained.
Main publications:
1. Dubickas, A. Transcendency of some constants related to integer sequences of polynomial iterations. The Ramanujan Journal. 2022. 57 (2): 569鈥581.
2. Garunk拧tis, R., Panavas, T. The zeros of the Lerch zeta-function are uniformly distributed modulo one. Ukr. Math. J. 2022. 73(9): 1359鈥1370.
3. Laurin膷ikas, A. Joint universality in short intervals with generalized shifts for the Riemann function. Mathematics. 2022. 10(10): Art. Number 1652.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INOVATION) PARTNERS
University of New South Wales (Sydney, Australia)
Nagoya University (Japan)
W眉rzburg University (Germany)
Oklahoma State university (USA)
Montanuniversit盲t Leoben (Austria)
South China Normal University (China)
OTHER RESEARCH ACTIVITIES
Prof. A. Dubickas
鈥 member of the Lithuanian Academy of Sciences,
鈥 editor of the European Journal of Mathematics,
鈥 editorial board member of the Uniform Distribution Theory,
鈥 section editor of the Lithuanian Mathematical Journal,
鈥 leader of Lithuanian team at IMO,
鈥 program committee member of the Lithuanian conference in Probability Theory and Number Theory. Palanga, September 5鈥10, 2022.
Prof. A. Laurin膷ikas (Emeritus)
鈥 member of the Lithuanian Academy of Sciences,
鈥 editorial board member of the Lithuanian Mathematical Journal,
鈥 editorial board member of the Mathematical Modelling and Analysis,
Prof. E. Manstavi膷ius (Emeritus)
鈥 member of the Lithuanian Academy of Sciences,
鈥 section editor of the Lithuanian Mathematical Journal,
鈥 editorial board member of the International Journal of Number Theory,
鈥 board member of the Lithuanian Mathematical Society,
鈥 individual member of the European Mathematical Society,
24 Naugarduko st., LT鈥03225 Vilnius
Tel.: 219 3081
E-mail:
Head 鈥 Prof. Dr Ram奴nas Garunk拧tis
STAFF
Professors: Dr R. Garunk拧tis (part-time), Dr R. Macaitien臈 (part-time, 艩iauliai Academy), Dr D. 艩iau膷i奴nas (part-time, 艩A)
Chief research fellows: Dr R. Garunk拧tis (part-time), Dr R. Macaitien臈 (part-time, 艩A)
Associate professors: Dr V. Garbaliauskien臈 (part-time, 艩A), Dr A. Grigutis, Dr R. 艩im臈nas
Senior researchers: Dr V. Garbaliauskien臈 (part-time, 艩A), Dr Darius 艩iau膷i奴nas (part-time, 艩A).
Assistants: Dr E. Karikovas, Dr R. Tamo拧i奴nas (part-time)
Specialist: J. Putrius
Doctoral students: T. Kondratavi膷ius, T. Mikalauskait臈
RESEARCH INTERESTS
鈥 Zeta functions
鈥 Universality theorems
鈥 Risk models
National Research Project
Zeta Functions: Going Beyond Riemann's Case (No. S-MIP-22-81). The Research Council of Lithuania. Prof. Dr R. Garunk拧tis. 2022鈥2025.
The primeness of certain zeta functions from the Selberg class is established, and a generalised limit theorem with an explicitly given limit measure for the Epstein zeta-function is obtained.
Main publication:
1. Laurin膷ikas A., Macaitien臈 R., A Generalized Bohr-Jessen Type Theorem for the Epstein Zeta-Function. Mathematics. 2022. 10(12): 2042.
OTHER SCIENTIFIC ACTIVITIES
Prof. R. Garunk拧tis
鈥 Member of the program committee of the 63ed conference of the Lithuanian Mathematical Society;
鈥 Editorial Board member of Lithuanian Mathematical Journal.
Prof. R. Macaitien臈
鈥 member of the American Mathematical Society,
鈥 Board member of the Lithuanian Mathematical Society, ;
鈥 reviewer for Mathematical Reviews;
鈥 reviewer for Zentralblatt MATH;
鈥 Editorial Board member of the journal Jaunuj懦 mokslinink懦 darbai / Journal of Young Scientists (publ. 91桃色, 艩iauliai Academy),
鈥 Editorial Board member of the journal Applied Scientific Research (publ. 艩iauliai State University of Applied Sciences),
鈥 Expert-consultant in the project Research on the heterogeneous growth effects of public debt/ Valstyb臈s skolos poveikio ekonomikos augimui heterogeni拧kumo tyrimas (PUBDEB) (S-MIP-19-65, Research Council of Lithuania), 2019鈥2022,
Prof. D. 艩iau膷i奴nas
鈥 Board member of the Lithuanian Mathematical Society,
鈥 reviewer for Mathematical Reviews.
Assoc. Prof. V. Garbaliauskien臈
鈥 member of the Lithuanian Mathematical Society,
Assoc. Prof. R. 艩im臈nas
鈥 reviewer for Mathematical Reviews.
THE CENTER FOR MATHEMATICS EDUCATION
24 Naugarduko st., LT-03225 Vilnius
Tel. 219 3075
E-mail:
Head 鈥 Prof. Dr Habil. Rimas Norvai拧a
STAFF
Professors: Habil. Dr A. Dubickas, Dr P. Drungilas, Habil. Dr R. Norvai拧a
Associate professors: Dr A. Elijio, Dr E. Maz臈tis, Dr A. Novikas
Affiliated associate professor: Dr R. Ka拧uba, R. Kud啪ma
Doctoral students: V. Mie啪ys, I. Kilien臈
RESEARCH INTERESTS
鈥 Research of pedagogical content knowledge of teachers of mathematics and content analysis of elementary mathematics
鈥 Research of mathematical problems and mathematical models
鈥 Development of working methods with children gifted in mathematics
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Mathematics Education Research. Prof. Dr (HP) R. Norvai拧a. 2020鈥2024.
This project aims to investigate the educational philosophy and politics of mathematics education. It seeks to establish the methodical material of elementary mathematics for teachers, to research and create word problems that motivate mathematical reasoning, and to compile a dictionary of concepts related to school mathematics.
We prepared the problems for Lithuanian Mathematical Olympiad, the Team Olympiad, and a selection test for the Baltic Way Olympiad. In 2022, the members of the centre were team leaders for Lithuanian teams participating at the IMO (International Mathematical Olympiad, held online), MEMO (Middle European Mathematical Olympiad, which was a hybrid event), and the team Olympiad Baltic Way, which was a live event in Iceland.
Main publications:
1. Kilien臈, I., Norvai拧a, R. Solving word problems with reasoned judgement. Lithuanian Mathematical Journal. 2022. 62: 467鈥80.
2. Kilien臈, I., Norvai拧a, R. The use of a deductive reasoning when solving a word problem. Twelfth Congress of the European Society for Research in Mathematics Education (CERME12), Feb 2022, Bozen-Bolzano, Italy. ffhal-03746835v2f.
Projects supported by the National Agency for Education
Development of the System to Supervise Students鈥 Achievements and Creation of Instruments to Establish Accumulative Assessments (No. 09.2.1-ESFA-V-706-02-0001). Participants V. Mie啪ys, R. Norvai拧a.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Tartu University (Estonia)
OTHER RESEARCH ACTIVITIES
Affiliated associate professor Dr R. Ka拧uba
鈥 board member of Lithuanian Kangaroo Committee, ;
鈥 editorial board member of the MCG Mathematical Creativity and mathematical Giftedness newsletter, Editor of Problem corner, www.igmcg.org/newsletter.html ;
鈥 board member of Lithuanian school of young mathematicians,
Assoc. Prof. E. Maz臈tis
鈥 board member of Lithuanian Mathematical Society, ;
鈥 board member of Lithuanian Mathematics Teachers Society, ;
鈥 head of Lithuanian School of Young Mathematicians,
Prof. R. Norvai拧a
鈥 editorial board member of the Lithuanian Mathematical Journal,
鈥 associate editor of the North-Western European Journal of Mathematics;
鈥 a representative of Lithuania in International Commission on Mathematical Instruction
鈥 a member of consultation board for Universal Lithuanian Encyclopaedia;
鈥 a nominated expert of the Lithuanian Government in Education working group of OECD.
Assoc. Prof. Dr A. Novikas
鈥 Team Leader of Lithuanian team at EGMO and "Baltic Way" mathematical contest; Deputy Leader of Lithuanian team at MEMO
鈥 participation at Kangaroo annual meetings, www.kengura.lt;
鈥 board member of Lithuanian School of Young Mathematicians,
Assoc. Prof. A. Elijio
鈥 expert member of the project 鈥淒eveloping the recognition of students鈥 academic capacities and the quality of their education鈥,
MOST IMPORTANT NATIONAL AND INTERNATIONAL AWARDS RECEIVED FOR R&D ACTIVITIES
The M.K. 膶iurlionis Foundation awarded 'Lithuanian Luminaries 2022' to Vygantas Paulauskas, Professor Emeritus of VU, a mathematician and author of textbooks on functional analysis who has published more than 120 scientific papers.
MOST IMPORTANT PARTICIPATION CASES OF RESEARCHERS IN WORKING GROUPS OR COMMISSIONS SET UP BY STATE AUTHORITIES, STATE AND MUNICIPAL INSTITUTIONS, ORGANISATIONS, BUSINESS ENTITIES
1. International Actuarial Association, : Dr A. Sku膷ait臈 is representative of Lithuanian Actuarial Association at Social Security Forum and Health Forum as well as Honorary Secretary of Health Section. Dr R. Gylys is member of Insurance Accounting Committee.
2. Institute and Faculty of Actuaries, : Dr R. Gylys is a member of the Institute.
3. Lithuanian Actuarial Society, : Prof. G. Bak拧tys, Dr A. Sku膷ait臈, Dr R. Gylys and doctoral student S. Pauk拧tys are members of the Society.
4. Lithuanian Statistical Society, : Dr M. Manstavi膷ius is president of the Society; Prof. V. Paulauskas is a member of the Society.
5. Committee of European Auditing Oversight Bodies (CEAOB), Dr A. Linartas is a member of the Committee.
6. The Audit Committee of the European Investment Bank (EIB), Dr A. Linartas is the chairman of the Comitee.
7. OECD working group 鈥濫ducation 2030鈥: Prof. R. Norvai拧a is a representative of Lithuania.
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
1. 11th Meeting of Lithuanian Young Mathematicians, : Dr A. Grigutis, Dr J. jankauskas, doctoral students R. Pui拧ys, A.Nakliuda, N. Nakliuda, S. Pauk拧tys.
2. Seminar for techers on Mathematics 鈥淢athematics as a way of thinking. Advice and ideas鈥. Prof. R. Norvai拧a, Dr D. Dzindzalieta.
INSTITUTE OF APPLIED MATHEMATICS
24 Naugarduko st., LT-03225 Vilnius
Tel. 219 5043
E-mail: ,
www
Director 鈥 Prof. Habil. Dr Konstantinas Pileckas
STAFF
Professors: Dr A. Ambrazevi膷ius, Habil. Dr V. 膶ekanavi膷ius, Dr P. Katauskis, Habil. Dr R. Leipus, Habil. Dr R. Norvai拧a (part-time), Habil. Dr K. Pileckas, Habil. Dr A. Ra膷kauskas, Dr (HP) M. Radavi膷ius (part-time), Habil. Dr D. Surgailis (emeritus), Dr (HP) A. 艩tikonas (part-time), Dr O. 艩tikonien臈.
Research fellows: Dr K. Kar膷iauskas, Dr R. Norvai拧a (part-time), G. Panasenko (Distinguished professor, part-time), Habil. Dr K. Pileckas, , Habil. Dr A. Ra膷kauskas (part-time), Dr (HP) A. 艩tikonas (part-time), Dr R. Vidunas (part-time).
Associate professors: Dr K. Kaulakyt臈, Dr V. Kazakevi膷ius, Dr A. Kreg啪d臈, Dr R. Levulien臈, T. Mar膷iulaitis (Partnership), Dr J. Markevi膷i奴t臈 (part-time), Dr G. Puriu拧kis, DrV. Skorniakov, Dr R. Vidunas (part-time).
Assistants: Dr A. Buteikis, Dr D. Celov, Dr R. Gini奴nait臈, Dr S. Jokubaitis, Dr R. Juodagalvyt臈, Dr E. Karikovas, Dr A. Kavaliauskas, Dr 艩. Rep拧ys, Dr V. 艩umskas, Dr J. Venskus (part-time).
Junior assistants: I. Kilien臈, N. Kozulinas, A. Med啪i奴nas.
Lecturers: Dr R. Eidukevi膷ius (part-time), V. Maniu拧is.
Affiliate professors: Dr V. Bagdonavi膷ius, Dr V. Skakauskas.
Doctoral students: A. E. Bakhit, K. Bartkus, A. Birbilas, R. Buzas, U. 膶i啪ikovien臈, T. Danielius, I. Kilien臈, N. Kozulinas, V. Mie啪ys, G. Liaudanskait臈, D. Vere拧kait臈.
DEPARTMENTS OF INSTITUTE OF APPLIED MATHEMATICS
Department of Differential Equations
Department of Statistical Analysis
RESEARCH AREAS
鈥 Fundamental mathematics: number theory, probability theory and stochastic analysis, theory of differential equations, functional analysis, and random fields.
鈥 Applied mathematics: methods of mathematical statistics, mathematical modelling, econometrics, time series analysis, insurance mathematics, and network traffic models.
MAIN CONFERENCES ORGANIZED IN 2022
1. International workshop 鈥淢ultiscale Modeling and Methods鈥, 24-26 October, 2022, Vilnius. Organizers: K. Kaulakyt臈, G. Panasenko, K. Pileckas.
2. International workshop 鈥淏iomathematics and Mechanics in Cardiovascular Medicine鈥, December 7, 2022, Saint-Etienne and online. Organizers: S. Avril, G. Panasenko.
3. Fudan International Seminar on Analysis, PDEs, and Fluid mechanics, 2022 (remotely), organized by Fudan University (Shanghai, China, Z Lei, M. Korobkov), Universita degli studi della Campania "Luigi Vanvitelli" (Caserta, Italy, A. Ferone, R. Russo) and 91桃色 (Vilnius, Lithuania, K. Pileckas),
4. 63rd Conference and Congress of Lithuanian Mathematical Society, June 16-17, 2022, Kaunas, Lithuania. Chairman of the programme committee prof. A. 艩tikonas
BEST REPORTS DELIVERED AT CONFERENCES ABROAD
1. Panasenko G., Pileckas K, Kaulakyt臈 K., Kozulinas N., Borodinas S., Ardatov S. Simulation of the blood flow in the left atrium appendage (LAA). International workshop 鈥淏iomathematics and Mechanics in Cardiovascular Medicine鈥, December 7, 2022, Saint-Etienne, France (hybrid).
2. Panasenko G. Asymptotic Analysis and Numerical Simulations in the heart and in vessels. International workshop 鈥淢ultiscale Modeling and Methods鈥, October 24-16, 2022, Vilnius, Lithuania.
3. Kilien臈, I., Norvai拧a, R. The use of a deductive reasoning when solving a word problem. Twelfth Congress of the European Society for Research in Mathematics Education (CERME12), Feb 2022, Bozen-Bolzano, Italy.
DEPARTMENT OF DIFFERENTIAL EQUATIONS
24 Naugarduko st., LT-03225 Vilnius
Tel. 219 3098
E-mail:
Head - Prof. Habil. Dr Konstantinas Pileckas
STAFF
Professors: Dr A. Ambrazevi膷ius, Dr P. Katauskis, G. Panasenko (Distinguished professor, part-time), Habil. Dr K. Pileckas (part-time), Dr O. 艩tikonien臈, Dr A. 艩tikonas (part-time),
Research fellows: Dr K. Kar膷iauskas, Habil. Dr K. Pileckas (part-time), Dr A. 艩tikonas (part-time), Dr R. Vidunas (part-time).
Associate professors: Dr K. Kaulakyt臈, Dr A. Kreg啪d臈, Dr G. Puriu拧kis, Dr R. Vidunas (part-time).
Assistants: Dr R. Gini奴nait臈 (part-time), Dr R. Juodagalvyt臈, Dr E. Karikovas, Dr A. Kavaliauskas, Dr 艩. Rep拧ys, V. 艩umskas.
Junior assistant: N. Kozulinas.
Affiliate professor: Dr V. Skakauskas.
RESEARCH INTERESTS
鈥 Partial differential equations
鈥 Mathematical hydrodynamics
鈥 Mathematical modelling
鈥 Integrodifferential and nonlocal equations
鈥 Numerical methods
鈥 Computer geometry
鈥 Functional analysis
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Theoretical and Applied Research of Differential Problems. Assoc. Prof. Dr K. Kaulakyt臈. 2022鈥2025.
The dimension reduction for the viscous flows in thin tube structures leads to equations on the graph for the macroscopic pressure with Kirchhoff-type junction conditions at the vertices. Nonlinear equations on the graph generated by the non-Newtonian rheology were studied. The existence of a unique solution was proved. This solution describes the leading term of an asymptotic analysis of the stationary non-Newtonian fluid motion in a thin tube structure with no-slip boundary condition on the lateral boundary.
An alternating direction implicit (ADI) type finite volume numerical scheme was constructed to solve a hybrid dimension heat conduction problem in a 2D cross-shaped domain. An efficient modification of the classical factorisation algorithm was developed to resolve nonlocal conjugation conditions. The obtained results of numerical experiments confirmed the theoretical accuracy of the estimates.
New constructions of high-quality multi-sided surfaces were obtained.
A novel method was presented that, for a given DNA sequence, predicts not only the energy needed to wrap into a nucleosome but also its optimal configuration. We highlighted the importance of such a method as it broadens the understanding of the mechanical features of DNA that facilitate nucleosome formation.
The classical topic of rigid graphs, that is, graphs with prescribed edge lengths and having finitely many (up to Euclidean motions) embeddings into R^d, was considered. New upper bounds on the number of embeddings in all dimensions were obtained.
Main publications:
1. Gini奴nait臈, Rasa; Petkevi膷i奴t臈-Gerlach, Daiva. Predicting the configuration and energy of DNA in a nucleosome by coarse-grain modelling // Physical chemistry chemical physics. Cambridge : Royal society of chemistry. 2022, vol. 24, iss. 42, p. 26124-26133. DOI: 10.1039/d2cp03553g.
2. Kar膷iauskas, K臋stutis; Peters, Jorg. An improved refinement rule for multi-sided faces // Computers and graphics. Oxford : Pergamon-Elsevier Science LTD. 2022, vol. 102, p. 370-379. DOI: 10.1016/j.cag.2021.10.008.
3. Kar膷iauskas, K臋stutis; Peters, Jorg. Bi-cubic scaffold surfaces // Computer-aided design. Oxford : Elsevier. 2022, vol. 150, art. no. 103310, p. [1-10]. DOI: 10.1016/j.cad.2022.103310.
4. Panassenko, Grigory; Pileckas, Konstantinas; Vernescu, Bogdan. Steady state non-Newtonian flow in a thin tube structure: equation on the graph // St. Petersburg mathematical journal. Providence : American Mathematical Society. 2022, vol. 33, iss. 2, p. 327-340. DOI: 10.1090/spmj/1702.
5. Panassenko, Grigory; Viallon, Marie-Claude. Method of asymptotic partial decomposition with discontinuous junctions // Computers & mathematics with applications. Oxford : Pergamon-Elsevier science Ltd. 2022, vol. 105, p. 75-93. DOI: 10.1016/j.camwa.2021.11.017.
6. Bartzos, Evangelos; Emiris, Ioannis Z.; Vidunas, Raimundas. New upper bounds for the number of embeddings of minimally rigid graphs // Discrete & computational geometry. New York : Springer.. 2022, vol. 68, no. 3, p. 796-816. DOI: 10.1007/s00454-022-00370-3.
7. 艩umskas, Vytenis; 膶iegis, Raimondas. Finite volume ADI scheme for hybrid dimension heat conduction problems set in a cross-shaped domain // Lithuanian mathematical journal. New York : Springer. 2022, vol. 00, iss. 00, p. 1-20. DOI: 10.1007/s10986-022-09561-0.
International Research Projects
Multiscale Mathematical and Computer Modeling for Flows in Networks: Application to Treatment of Cardiovascular Diseases (No 09.3.3-LMT-K-712-17-0003). European Social Fund. Prof. G. Panasenko. 2020鈭2023.
In 2022, the steady-state non-Newtonian flow, with strain rate-dependent viscosity in a thin tube structure with no-slip boundary condition, was considered. Applying the Banach fixed point theorem, the existence and uniqueness of a solution were proved. An asymptotic approximation was constructed and justified by an error estimate. Using COMSOL, the results concerning blood flow in the left atrium appendage were obtained for the atrial fibrillation case.
Main publication:
1. Panassenko, Grigory; Pileckas, Konstantinas; Vernescu, Bogdan. Steady state non-Newtonian flow with strain rate dependent viscosity in thin tube structure with no slip boundary condition // Mathematical modelling of natural phenomena. Paris : EDP Sciences. 2022, vol. 17, art. no. 18, p. [1-36]. DOI:10.1051/mmnp/2022005.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
Z眉rich University, Zurich (Switzerland)
University of Saint Etienne, Saint Etienne (France)
Universit`a degli Studi della Campania 鈥淟. Vanvitelli鈥, Caserta (Italy)
Seconda Universit脿 degli Studi di Napoli, Caserta (Italy)
Ferrara of University, Ferrara (Italy)
University of Kassel, Kassel (Germany)
University of Novosibirsk, Novosibirsk (Russia)
Steklov institute of Mathematics, St. Petersburg (Russia)
Fudan University, Shanghai (China)
OTHER RESEARCH ACTIVITIES
Prof. K. Pileckas
鈥 member of the Lithuanian Academy of Sciences;
鈥 editorial board member of the journal Mathematical Fluid Mechanics,
鈥 editorial board member of the journal Mathematical Modelling and Analysis, ;
鈥 editorial board member of the journal Lithuanian Mathematical Journal,
鈥 editorial board member of the Journal of Elliptic and Parabolic Equations,
鈥 editorial board member of the journal Mathematics, .
Prof. O. 艩tikonien臈
鈥 managing Editor of the journal Lithuanian Mathematical Journal,
鈥 member of the Lithuanian Mathematical Society.
Prof. A. 艩tikonas
鈥 President of the Lithuanian Mathematical Society
鈥 deputy-editor-in-chief of the journal Nonlinear Analysis: Modelling and Control,
鈥 executive editor of the journal Mathematical Modelling and Analysis,
鈥 editorial board member of the journal Lithuanian Mathematical Journal,
Assoc. prof. . K. Kaulakyt臈
鈥 member of the Lithuanian Mathematical Society.
DEPARTMENT OF STATISTICAL ANALYSIS
24 Naugarduko st., LT-03225 Vilnius
Tel. 219 3067
E-mail:
Head 鈥 Prof. Habil. Dr Vydas 膶ekanavi膷ius
STAFF
Professors: Habil. Dr V. Bagdonavi膷ius, Habil. Dr V. 膶ekanavi膷ius, Habil. Dr R. Norvai拧a (part-time), Habil. Dr A. Ra膷kauskas (part-time), Habil. Dr M. Radavi膷ius (part-time), Habil. Dr D. Surgailis (emeritus).
Research fellows: Habil. Dr R. Leipus, Dr R. Norvai拧a (part-time), Dr A. Ra膷kauskas (part-time).
Associate professors: Dr D. Celov, Dr V. Kazakevi膷ius, T. Mar膷iulaitis (Partnership), Dr J. Markevi膷i奴t臈 (part-time) Dr R. Levulien臈, Dr V. Skorniakov.
Assistants: Dr A. Buteikis, Dr S. Jokubaitis, Dr J. Venskus.
Junior assistants: U. 膶i啪ikovien臈, I. Kilien臈, A. Med啪i奴nas.
Lecturers: Dr R. Eidukevi膷ius, V. Maniu拧is.
RESEARCH INTERESTS
鈥 Time series analysis, financial econometrics
鈥 Functional data analysis
鈥 Limit theorems in probability and their applications to statistics and econometrics
鈥 Bootstrap and other resampling methods in statistics and econometrics
鈥 Macroeconometric modelling
鈥 High-frequency data analysis
鈥 Statistical methods in reliability theory and survival analysis and their applications
鈥 Asymptotic analysis of distributions of statistics, their approximations and applications
鈥 Insurance Mathematics.
RESEARCH PROJECTS CARRIED OUT IN 2022
Projects Supported by the University Budget
Analysis and Applications of Functions and Stochastic Systems. Assoc. Prof. Dr V. Skorniakov. 2022鈥2025.
The project involved:
a) rough functions analysis; b) functional data analysis; c) an approximation of stochastic systems; d) an investigation of long memory processes; e) group testing; and f) the applications of statistics in medicine.
Richter's type local large deviations were investigated for runs statistics approximating Poisson, negative binomial and binomial distributions. Compound Poisson approximation in total variation was obtained for a special Markov three-state model related to actuarial mathematics.
The optimal configuration for the Square Array Group testing algorithm was derived. The probabilistic properties of the optimal nested pairwise testing algorithm were investigated.
A bivariate integer-valued autoregressive process of order 1 with copula-joint innovations was proposed. Different parameter estimation methods were analysed and compared via Monte Carlo simulations. Empirical applications were provided. The functional data analysis approach is applied to modelling and analysing daily tax revenues. Some asymptotic results for the p-variation of the random walk were obtained and applied to a change point problem.
Main publications:
1. Bal膷i奴nait臈, Giedr臈, Besusparis, Justinas, Palionis, Darius, 沤urauskas, Edvardas, Skorniakov, Viktor, Janu拧auskas, Vilius, Zorinas, Aleksejus, Zaremba, Tomas, Valevi膷ien臈, Nomeda, 艩erpytis, Pranas et al. Exploring myocardial fibrosis in severe aortic stenosis: echo, CMR and histology data from FIB-AS study. Int J Cardiovasc Imaging (2022).
2. 膶ekanavi膷ius, Vydas, Novak, Serguei. Compound Poisson Approximations. Probability
Surveys, 2022, 19, 271鈥350.
3. Danielius, Tadas; Ra膷kauskas, Alfredas. Multiple change-point detection in a functional sample via the -sum process. Mathematics. Basel : MDPI. 2022, vol. 10, iss. 13, p. 1-27.
4. Markevi膷i奴t臈, Jurgita; Bernatavi膷ien臈, Jolita; Levulien臈, R奴ta; Medvedev, Viktor; Treigys, Povilas; Venskus, Julius. Impact of COVID-19-related lockdown measures on economic and social outcomes in Lithuania . Mathematics. Basel : MPDI. 2022, vol. 10, no. 15, p. 1-20.
5. Pilipauskait臈 Vytaut臈, Surgailis Donatas. Local scaling limits of Levy driven fractional random fields. Bernoulli, 2022, 28: 2833-2861.
6. Jokubaitis Saulius, Leipus Remigijus. Asymptotic normality in linear regression with approximately sparse structure. Mathematics. 2022, 10, 1657.
National Research Projects
Closure Properties of Probability Distributions: Theory and Applications (No S-MIP-20-16). The Research Council of Lithuania. Prof. R. Leipus. 2020鈥2022.
The complete and systematic characterisation of closure properties to operations under consideration for heavy-tailed and related distribution was given. Some applications to risk measures and copulas were considered.
Main publications:
1. Konstantinides D., Leipus R., 艩iaulys J. A note on product-convolution for generalized subexponential distributions. Nonlinear Analysis: Modelling and Control. 2022. 27. 1054鈥1067.
2. Konstantinides D., Leipus R., 艩iaulys J. On the non-closure under convolution for strong subexponential distributions. Nonlinear Analysis: Modelling and Control. 2023. (forthcoming).
3. Jokubaitis S., Leipus R. Asymptotic normality in linear regression with approximately sparse structure. Mathematics. 2022, 10, 1657.
MAIN R&D&I (RESEARCH, DEVELOPMENT AND INNOVATION) PARTNERS
University of Lille (France)
University of Nantes (France)
Hannover University (Germany)
Queen Mary University of London (U.K.)
Tilburg University (The Netherlands)
Karol Adamiecki University of Economics in Katowice (Poland)
Padova University (Italy)
University of the Aegean (Greece)
OTHER RESEARCH ACTIVITIES
Prof. A. Ra膷kauskas
鈥 editorial board member of the Lithuanian Mathematical Journal, ;
鈥 editorial board member of the Mathematical Modelling and Analysis,
鈥 member of the Lithuanian Statistics Society, option=com_content&task=view&id=5&Itemid=7;
鈥 deputy of editor-in-chief of Lithuanian Journal of Statistics,
Prof. M. Radavi膷ius
鈥 editorial board member of the Lithuanian Mathematical Journal, ;
鈥 editorial board member of the Modern Stochastics: Theory and Applications,
鈥 editor-in-chief of the Lithuanian Journal of Statistics,
鈥 member of the International Biometric Society, Nordic-Baltic Region;
鈥 member of the Lithuanian Statistics Society board,
鈥 member of the Lithuanian Mathematical Society.
Prof. V. 膶ekanavi膷ius
鈥 member of the Lithuanian Statistics Society,
鈥 editorial board member of Lithuanian Journal of Statistics,
Prof. R. Leipus
鈥 member of the Lithuanian Academy of Sciences,
鈥 member of the Lithuanian Mathematical Society,
鈥 member of the Lithuanian Statistics Society;
鈥 editorial board member of the Lithuanian Mathematical Journal,
Prof. R. Norvai拧a
鈥 managing editor of the Lithuanian Mathematical Journal, ;
鈥 associate editor of the North-Western European Journal of Mathematics;
鈥 a representative of Lithuania in International Commision on Mathematical Instruction,
鈥 a member of consultation board for Universal Lithuanian Encyclopedia.
Prof. V. Bagdonavi膷ius
鈥 editorial board member of the Lithuanian Mathematical Journal, ;
鈥 member of the Lithuanian Academy of Sciences,
鈥 member of the Lithuanian Mathematical Society;
鈥 member of the Lithuanian Statistics Society,
Assoc. Prof. V. Kazakevi膷ius
鈥 member of the Lithuanian Mathematical Society.
Lecturer R. Eidukevi膷ius
鈥 member of the Lithuanian Mathematical Society;
鈥 member of the Lithuanian Statistics Society,
Assoc. Prof. R. Levulien臈
鈥 member of the Statistical Council (an advisory body of Statistics Lithuanian);
鈥 editorial board member of Lithuanian Journal of Statistics
鈥
鈥 member of the Lithuanian Statistics Society
鈥
鈥 member of the Lithuanian Mathematical Society
Assoc. Prof. V. Skorniakov
鈥 member of the Lithuanian Mathematical Society.
鈥 member of the International Biometric Society, Nordic-Baltic Region;
MOST IMPORTANT PARTICIPATION CASES OF RESEARCHERS IN WORKING GROUPS OR COMMISSIONS SET UP BY STATE AUTHORITIES, STATE AND MUNICIPAL INSTITUTIONS AND ORGANISATIONS, AND BUSINESS ENTITIES
Prof. R. Leipus
鈥 member of the European Mathematical Society European Solidarity Committee;
鈥 member of the Ethics Committee at the Research Council of Lithuania;
鈥 member of the Committee of recognition of foreign scientific degree at the Research Council of Lithuania;
鈥 member of the Institute of Mathematical Statistics (IMS).
Prof. R. Norvai拧a
鈥 Member of a commission set up by Ministry of Education, Science and Sport to consult on school mathematics
MOST IMPORTANT RESEARCH DISSEMINATION ACTIVITIES
K. Kaulakyt臈. Presentation 鈥淎pplications of Mathematics鈥. St. Benedict鈥檚 High School, Alytus. 25 November 2022.