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Dr. Viktor Medvedevviktor medvedev

Department: Blockchain Technologies Group
Position: Senior Researcher

Address: Akademijos st. 4, room 613, Vilnius
Tel: (+370 5) 210 9310
E-mail:   

 

 

 

Scientific and Pedagogical Background

From 2007-09-01

Researcher
Research in Data Analysis and Visualization, Cloud Computing, Big Data, Optimization, Parallel Computing, Neural Networks
Vilnius University, Institute of Mathematics and Informatics (http://www.mii.lt/)

Education and Training

2003–2007 PhD (Technological Sciences, Informatics Engineering )
Topic of the thesis: “Research of Multidimensional Data Visualization Using Feed-forward Neural Networks”
Vilnius Gediminas Technical University and Institute of Mathematics and Informatics (Lithuania)

2003 Master‘s degree (informatics)
Vilnius Pedagogical University

2001 Bachelor of Science in Informatics and Mathematics

Vilnius Pedagogical University

Mathematics, informatics, numerical methods, computer networks and computer architecture

 

Research Interests

  •  Visualization of multidimensional data;
  •  Analysis of large data sets;
  •  Data mining;
  •  Big Data;
  •  Cloud Computing;
  •  Artificial neural networks;
  •  Parallel computing;
  •  Web services;
  •  Internet data mining;
  • Medical data analysis and decision support

 

Scientific publications

Publications with VU Institute of Data Science and Digital Technologies & Institute of Mathematics and Informatics affiliation

  • Venskus, Julius; Treigys, Povilas; Bernatavičienė, Jolita; Medvedev, Viktor; Voznak, Miroslav; Kurmis, Mindaugas; Bulbenkienė, Violeta. Integration of a self-organizing map and a virtual pheromone for real-time abnormal movement detection in marine traffic // Informatica. Vilnius : Vilniaus universiteto Matematikos ir informatikos institutas. ISSN 0868-4952. 2017, Vol. 28, No. 2, p. 359-374. Prieiga per internetą: <https://www.mii.lt/informatica/pdf/INFO1145.pdf>. [Scopus; INSPEC; Science Citation Index Expanded (Web of Science)] [Citav. rod.: 1.056 (2016, SCIE)]
  • Medvedev, Viktor; Kurasova, Olga; Bernatavičienė, Jolita; Treigys, Povilas; Marcinkevičius, Virginijus; Dzemyda, 

    Gintautas. A new web-based solution for modelling data mining processes // Simulation modelling practice and 

    theory. Amsterdam : Elsevier Science. ISSN 1569-190X. eISSN 1878-1462. 2017, Vol. 76, p. 34-46. DOI: 

    10.1016/j.simpat.2017.03.001. [Scopus; Zentralblatt MATH (zbMATH); Mathematical Reviews; Science Citation 

    Index Expanded (Web of Science)] [Citav. rod.: 1.954 (2016, SCIE)]
  • Medvedev, Viktor; Dzemyda, Gintautas. Optimization of the local search in the training for SAMANN neural 

    network // Journal of global optimization. ISSN 0925-5001. 2006, Vol. 35, Iss. 4, p. 607-623. DOI: 

    DOI:10.1007/s10898-005-5368-1. [MathSciNet; Scopus; Zentralblatt MATH (zbMATH); SpringerLink; 

    Compendex; Science Citation Index Expanded (Web of Science)][Citav. rod.: 0.568 (2006, SCIE)]

  •  

    Medvedev, Viktor; Dzemyda, Gintautas; Kurasova, Olga; Marcinkevičius, Virginijus. Efficient data projection for 

    visual analysis of large data sets using neural networks = Efektyvi duomenų projekcija didelės apimties duomenims 

    vizualizuoti naudojant neuroninius tinklus // Informatica. Vilnius : Institute of Mathematics and Informatics. ISSN 

    0868-4952. eISSN 1822-8844. 2011, vol. 22, no. 4, p. 507-520. Prieiga per internetą: 

    <http://www.mii.lt/informatica/pdf/INFO855.pdf>. [TOC Premier; Zentralblatt MATH 

    (zbMATH); Current Abstracts (EBSCO); INSPEC; Science Citation Index Expanded (Web of Science)]

    [Citav. rod.: 1.627 (2011, SCIE)]
  • Jucevičius, Justinas; Treigys, Povilas; Bernatavičienė, Jolita; Briedienė, Rūta; Naruševičiūtė, Ieva; Dzemyda, 

    Gintautas; Medvedev, Viktor. Automated 2D segmentation of prostate in T2-weighted MRI scans // International 

    journal of computers communications & control. Oradea : Universitatea Agora. ISSN 1841-9836. eISSN 1841-9844. 

    2017, Vol. 12, No. 1, p. 53-60. Prieiga per internetą: 

    <http://univagora.ro/jour/index.php/ijccc/article/view/2783/1059>. [Scopus; Science Citation 

    Index Expanded (Web of Science)] [Citav. rod.: 1.374 (2016, SCIE)]

  •  

    Dzemyda, Gintautas; Marcinkevičius, Virginijus; Medvedev, Viktor. Web application for large-scale 

    multidimensional data visualization // Mathematical modelling and analysis = Matematinis modeliavimas ir analizė / 

    Vilnius Gediminas Technical University, Institute of Mathematics and Informatics. Vilnius : Technika. ISSN 1392-

    6292. 2011, vol. 16, no. 2, p. 273-285. DOI: 10.3846/13926292.2011.580381. [Zentralblatt MATH (zbMATH); 

    Mathematical Reviews; INSPEC; Science Citation Index Expanded (Web of Science)] [Citav. rod.: 

    0.463 (2011, SCIE)]

  •  

    Besson, Jérémy Daniel; Lupeikienė, Audronė; Medvedev, Viktor. Comparing real and intended system usages: a case 

    for web portal = Realaus ir prognozuoto sistemos naudojimo palyginimas: web portalo atvejis // Informatica / 

    Matematikos ir informatikos institutas. Vilnius : Lietuvos mokslų akademijos leidykla. ISSN 0868-4952. 2012, vol. 

    23, no. 2, p. 191-201. Prieiga per internetą: <http://www.mii.lt/informatica/pdf/INFO862.pdf>

    [TOC Premier; Zentralblatt MATH (zbMATH); Current Abstracts (EBSCO); INSPEC; Science Citation Index 

    Expanded (Web of Science)] [Citav. rod.: 1.117 (2012, SCIE)] 

  • Bernatavičienė, Jolita; Dzemyda, Gintautas; Bazilevičius, Gediminas; Medvedev, Viktor; Marcinkevičius, Virginijus; Treigys, Povilas. Method for visual detection of similarities in medical streaming data // International journal of computers communications & control. Oradea : Universitatea Agora. ISSN 1841-9836. 2015, Vol. 10, no. 1, p. 8-21. Prieiga per internetą: <http://univagora.ro/jour/index.php/ijccc/article/view/1310/pdf_180> [žiūrėta 2015-03-30]. [Scopus; Science Citation Index Expanded (Web of Science); EBSCOHost (nenaudotinas)] [Citav. rod.: 0.627 (2015, SCIE)]
  • Dzemyda, Gintautas; Marcinkevičius, Virginijus; Medvedev, Viktor. Large-scale multidimensional data 

    visualization: a Web service for data mining // Towards a service-based internet : 4th European Conference, 

    ServiceWave 2011, Poznan, Poland, October 26-28, 2011: proceedings. - Book Series : Lecture Notes in Computer 

    Science. Vol. 6994. Berlin : Springer, 2011. ISBN 9783642247545. p. 14-25. [Conference Proceedings Citation 

    Index - Science (Web of Science)]
  • Medvedev, Viktor; Dzemyda, Gintautas. Speed up of the SAMANN neural network retraining // Lecture notes in 

    artificial intelligence. ISSN 0302-9743. 2006, Vol. 4029, p. 94-103. DOI: DOI:10.1007/11785231_11. [MathSciNet; 

    SpringerLink; Compendex; Science Citation Index Expanded (Web of Science); GeoRef] 
  • Ivanikovas, Sergėjus; Dzemyda, Gintautas; Medvedev, Viktor. Large datasets visualization with neural network using 

    clustered training data // Lecture notes in computer science. ISSN 0302-9743. 2008, Vol. 5207, p. 143-152. DOI: 

    DOI:10.1007/978-3-540-85713-6. [MathSciNet; Conference Proceedings Citation Index (nenaudotinas); ISI 

    Proceedings (nenaudotinas); SpringerLink; Compendex; INSPEC; GeoRef] 

  •  

    Ivanikovas, Sergėjus; Dzemyda, Gintautas; Medvedev, Viktor. Neural network-based visualization using clustered 

    data // The 20th international conference EURO mini conference "Continuous optimization and knowledge-based 

    technologies" EurOPT'2008 : May 20-23, 2008, Neringa, Lithuania : selected papers. Vilnius : Technika, 2008. ISBN 

    9789955282839. P. 335-341. DOI: ISIP:BIE19.

  •  

    Bernatavičienė, Jolita; Dzemyda, Gintautas; Kurasova, Olga; Marcinkevičius, Virginijus; Medvedev, Viktor. The 

    problem of visual analysis of multidimensional medical data // Springer optimization and its applications. Vol. 4, 

    Models and algorithms for global optimization. New York : Springer, 2007. ISBN 0387367209. p. 277-298. DOI: 

    DOI:10.1007/978-0-387-36721-7_17. [SpringerLink]

  •  

    Ivanikovas, Sergėjus; Medvedev, Viktor; Dzemyda, Gintautas. Parallel realizations of the SAMANN algorithm // 

    Lecture notes in computer science. ISSN 0302-9743. 2007, Vol. 4432, p. 179-188. DOI: DOI:10.1007/978-3-540-

    71629-7. [MathSciNet; Conference Proceedings Citation Index (nenaudotinas); SpringerLink; Compendex; INSPEC; 

    GeoRef]

  •  

    Bernatavičienė, Jolita; Kurasova, Olga; Marcinkevičius, Virginijus; Medvedev, Viktor; Podgorni, Piotr; Treigys, 

    Povilas. Deterministic methods for a production effectiveness navigator // Baltic journal of modern computing. Riga : 

    University of Latvia. ISSN 2255-8942. 2014, Vol. 2, no. 1, p. 1-15. Prieiga per internetą: 

    <http://www.bjmc.lu.lv/fileadmin/user_upload/lu_portal/projekti/bjmc/Contents/2_1_1_Bernataviciene.pdf>

  •  

    Dzemyda, Gintautas; Medvedev, Viktor. Daugiamačius duomenis vizualizuojančio neuroninio tinklo permokymo 

    strategijos = Retraining strategies for the neural network visualizing the multidimensional data // Informacijos 

    mokslai. ISSN 1392-0561. 2005, T. 34, p. 263-267. Prieiga per internetą: <http://www.tzc.vu.lt/get.php?f.3201>

    . [CEEOL – Central and Eastern European Online Library; LISA]

  •  

    Kurasova, Olga; Marcinkevičius, Virginijus; Medvedev, Viktor; Rapečka, Aurimas. Duomenų tyrybos sistemos, 

    pagrįstos saityno paslaugomis // Informacijos mokslai / Vilniaus universitetas. Vilnius : Vilniaus universiteto 

    leidykla. ISSN 1392-0561. 2013, t. 65, p. 66-74. Prieiga per internetą: 

    <http://www.vu.lt/leidyba//dokumentai/zurnalai/INFORMACIJOS%20MOKSLAI/Informacijos%20mokslai%20201pdf>. [CEEOL – Central and Eastern European Online Library; LISA]

  •  

    Medvedev, Viktor; Dzemyda, Gintautas. Retraining the neural network for data visualization // IFIP International 

    Federation for Information Processing. 204, Artificial Intelligence Applications and Innovations : 3rd IFIP 

    Conference on Artificial Intelligence Applications and Innovations (AIAI) 2006 : June 7-9, 2006, Athens, Greece. 

    Boston : Springer, 2006. ISBN 9780387342238. p. 27-34. DOI: DOI:10.1007/0-387-34224-9. [Conference 

    Proceedings Citation Index (nenaudotinas); SpringerLink]
  • Medvedev, Viktor; Dzemyda, Gintautas. Vizualizavimo paklaidos lygiagrečiose SAMANN algoritmo realizacijose = 

    Mapping error in the parallel realizations of SAMANN algorithm // Lietuvos matematikos rinkinys. ISSN 0132-2818. 

    2004, T. 44, spec, Nr, p. 649-654. [MathSciNet; Zentralblatt MATH (zbMATH); CIS: Current Index to Statistics; 

    VINITI]

  •  

    Medvedev, Viktor; Dzemyda, Gintautas. Vizualizavimui skirto neuroninio tinklo mokymosi greičio optimizavimas = 

    Optimization of the learning rate in the algorithm for data visualization // Lietuvos matematikos rinkinys. ISSN 0132- 

    2818. 2005, T. 45, spec, Nr, p. 426-431. [MathSciNet; Zentralblatt MATH (zbMATH); CIS: Current Index to 

    Statistics; VINITI]

  •  

    Medvedev, Viktor; Kurasova, Olga. Cloud technologies: a new level for Big Data Mining // Resource management 

    for Big Data platforms: algorithms, modelling, and high-performance computing techniques / Editors: Florin Pop, 

    Joanna Kołodziej, Beniamino Di Martino. Ser.: Computer communications and networks. ISSN 1617-7975. Cham : 

    Springer International Publishing AG, 2016. ISBN 9783319448800. p. 55-68. DOI: 10.1007/978-3-319-44881-7_3. 

    [SpringerLink]
  • Dzemyda, Gintautas; Kurasova, Olga; Medvedev, Viktor. Dimension reduction and data visualization using neural 

    networks // Frontiers in artificial intelligence and applications. Vol. 160, Emerging artificial intelligence applications 

    in computer engineering : Real word AI systems with applications in eHealth, HCI, Information retrieval and 

    pervasive technologies. Amsterdam ... [etc.] : IOS Press, 2007. ISBN 9781586037802. ISSN 0922-6389. p. 25-49. 

    Prieiga per internetą: <http://www.booksonline.iospress.nl/Content/View.aspx?piid=6951> [žiūrėta 2007-11-26].
  • Dzemyda, Gintautas; Medvedev, Viktor; Lupeikienė, Audronė; Kurasova, Olga; Čaplinskas, Albertas. Big 

    multidimensional datasets visualization using neural networks - efficient decision support // Complex systems 

    informatics and modeling quarterly. Riga : RTU Press. ISSN 2255-9922. 2016, Iss. 6, p. 1-11. DOI: 

    10.7250/csimq.2016-6.01

  •  

    Bernatavičienė, Jolita; Dzemyda, Gintautas; Kurasova, Olga; Marcinkevičius, Virginijus; Medvedev, Viktor; Treigys, 

    Povilas. Cloud computing approach for intelligent visualization of multidimensional data // Advances in stochastic 

    and deterministic global optimization / Editors: Panos M. Pardalos, Anatoly Zhigljavsky, Julius Žilinskas. - Ser.: 

    Springer optimization and its applications. ISSN 1931-6828. Vol. 107. Cham : Springer International Publishing 

    Switzerland, 2016. ISBN 9783319299730. p. 73-85. DOI: 10.1007/978-3-319-29975-4_5. [SpringerLink]

     

 

Scientific and other projects

  • COST Action IC1406 (Management Committee) "High-Performance Modelling and Simulation for Big Data Applications (cHiPSet)", 2015-2019.
  • COST Action (MS Substitute of the action) "Big Data Era in Sky and Earth Observation (BIG-SKY-EARTH)", 2014-2018.
  • "Eurostars" joint programme project "Production effectiveness navigator". No. pen!6232 PEN implementation. No. 31V-27/LSS-580000-407, ("Eurostars" programme). Prof. habil. dr. G. Dzemyda. 2011-2014. (MITA)
  • "Theoretical and engineering aspects of development and application of the internet technologies in the effective computing platforms". Project of the National Integrated Program of Information Technologies. Leader prof. habil. dr. G. Dzemyda. 2012-2015.
  • Development of Data Analysis Methods and Tools (2013-02-12 Agreement between "Informatikos mokslų centras" and Vilnius University)
  • Project "Gilibert" of the Bilateral Lithuanian-France research program "Application of data mining methods for investigation of software systems" (V-33/2010). Dr. J. D. Besson (leader) (2009 04 07 - 2010 12 31)
  • "Information technology tools of clinical decision support and citizens wellness for e.Health system (No. B-07019)" Start date: 09-2007; finish date: 12-2009.
  • "Information technologies for human health - support for clinical decisions (eHealth), IT health  (No. C-03013)" Start date: 09-2003; finish date: 10-2006.

 

Presentations at Scientific Conferences

...

Other Information

Memberships and other information

  • Expert of FP7-ICT Committee (2013) 
  • Member of Lithuanian Computer Society, http://www.liks.lt/
  • Member of Lithuanian Mathematical Society, http://www.mif.vu.lt/lmd/
  • Member of SERVICE COMPUTATION 2014, 2015, 2016 Technical Program Committee

 

Honours and awards

  • ICAISC'06 Best Presentation Award (The 8th International Conference on Artificial Intelligence and Soft Computing, ICAISC 2006)
  • ICANNGA 2007 Best Young Researcher Paper Award in the area of Neural Networks (The 8th International Conference ICANNGA 2007)

 

Reviewer of International Journals

  • Informatica (IOSPress/VU);
  • Mathematical Modelling and Analysis (Taylor & Francis);
  • Journal of Global Optimization (Springer);
  • Pattern Recognition Letters (Elsevier);
  • The Baltic Journal of Road and Bridge Engineering (Technika/VGTU, Lithuania);
  • Baltic Journal of Modern Computing;
  • Applied Computing and Informatics (Elsevier).

PhD Supervision

Leads PhD Students: