Dimitrios Vogiatzis.

I am interested in machine learning methods and its applications in social network analysis and in medical applications.

I am currently affiliated to the Institute of Informatics and Telecommunications of NCSR "Demokritos" as a collaborating researcher.

I am also the coordinator of MS in Data Science program at the American College of Greece.

Learn about what I do

Here's all the stuff I do.

Project Involvement

Simply Easy Learning


BigMedilytics will transform Europe’s healthcare sector. This three-year project aims to enhance patient outcomes and increase productivity in the health sector by applying big data technologies to complex datasets while ensuring security and privacy of personal data.

Simply Easy Learning


P4-LUCAT is created to develop a platform to be used by oncologists in the pursuit of helping them in the decision-making process to determine the best treatment for a lung cancer patient. To take this decision the data that will be considered will be data from previous patients extracted from EHR, open data and scientific publications.

Book chapters

    1. S. Tzafestas and D. Vogiatzis, “Concerning Hopfield Networks: An overview with Applications to System Identification and Control”, S. Tzafestas Editor, Computational Intelligence in Systems and Control Design and Applications, pages 311-334, Kluwer, Boston, MA, 2000
    2. G. Paliouras, S. Papadopoulos, D.Vogiatzis, and I. Kompassiaris, “User communities”, edited volume, Springer, 2014

    Journal Articles

      1. D. Vogiatzis and A. Stafylopatis, “Reinforcement Learning for Symbolic Expression Induction”, Mathematics and Computers in Simulation, 51, pages 169-179, 2000
      2. D. Vogiatzis and A. Stafylopatis, “Reinforcement Learning for Rule Extraction from a Labeled Dataset”, Cognitive Systems Research Journal, Special Issue on Integration of symbolic and connectionist systems, vol.3, num.2, pages 237-253, 2002
      3. P. Avgeriou, D. Vogiatzis, A. Tzanavari, S. Retalis, “Towards a pattern language for adaptive web-based educational systems, Advanced Technology for Learning”, Vol. 1, Issue 4, ACTA Press, 2004
      4. A.Tzanavari, D. Vogiatzis, M. Zembylas, S. Retalis, P. Lalos, “Affective Aspects of Web Museums”, Special Issue: Journal of Communication Studies, 2005
      5. D. Vogiatzis and N. Tsapatsoulis, “Active Learning for Microarray Data”, Special Issue of IJAR on Approximate reasoning and Machine Learning for Bioinformatics, vol. 7, Issue 1, Jan, 2008
      6. D. Vogiatzis and V. Karkaletsis, "A Cognitive Framework for Robot Guides in Art Collections", Universal Access in the Information Society, Long Paper in special is-sue on "Pervasive Technologies and Assistive Environments: Social Impact, Financial, Government And Privacy Issues", issue 10/2, 2010
      7. S. Konstantopoulos, V. Karkaletsis, D. Vogiatzis, and D. Bilidas,"Authoring semantic and linguistic knowledge for the dynamic generation of personalized descriptions", book chapter, Springer 2011
      8. D. Vogiatzis, "Influential Users in Social Networks", Springer Series on Studies in Computational Intelligence, edited volume: “Semantic Hyper/Multi-media Adapta-tion: Schemes and Applications”, Forthcoming Springer 2012
      9. D. Vogiatzis, et al., "Expert and community based style advice", Expert Systems with Applications, Available online 28 February 2012, ISSN 0957-4174, 10.1016/j.eswa.2012.02.178

      Conference Articles

        1. D. Vogiatzis and A. Stafylopatis, “Α neural network endowed with symbolic processing ability”, IJCNN’99, International Joint Conference on Neural Networks, Washington D.C, July 1999
        2. G. Stamou, D. Vogiatzis and S. Stove, “Bridging the gap between subsymbolic and symbolic techniques: A pragmatic approach”, CSCC’99, Circuits Systems Communictions and Computers, Athens, July 1999
        3. D. Vogiatzis and A. Stafylopatis, “Reinforcement Learning for Rule Generation”, 5th International Conference on Artificial Neural Networks and Genetic Algorithms, Prague, Czech Republic, April 22-25, 2001
        4. A. Gavoyiannis, D. Vogiatzis and N. Hatziargyriou, “Dynamic Security Classification using Support Vector Machines”, ISAP , Budapest, Hungary, June 2001
        5. D. Frossyniotis, S. Vrettos, D. Vogiatzis & A. Stafylopatis, C. Constantinopoulos, D.I. Fotiadis & A. Likas, G. Potamias, A. Naka, Th. Tzimas & L.K. Michalis, “An Intelligent System for the Early Diagnosis of Coronary Artery Disease”, 4th International Conference “Neural Networks and Expert Systems in Medicine and Healthcare”, NNESMED 2001,20-22 June 2001, Milos Island, Greece 2001
        6. A. Gavoyiannis, D. Vogiatzis and N. Hatziargyriou, “Combined Support Vector Classifiers using Fuzzy Clustering for Dynamic Security Assessment”, IEEE, Power Engineering Society, Summer Power Meeting, July 15-19, Vancouver 2001
        7. D. Vogiatzis and A. Stafylopatis, “Mapping the Growing Neural Gas to Situation Calculus”, in J. Gros, J. Hartamanis and J. van Leeuwen, eds., Artificial Neural Networks – ICANN 2002, Verlag 957-962, 2002
        8. D. Vogiatzis, D. Frosyniotis and A.G. Papadopoulos, “The protein structure prediction module of the Prot-Grid information system”, International Conference On Enterprise Information Systems, Angers France, April 2003
        9. P. Avgeriou, D. Vogiatzis, A. Tzanavari, S. Retalis, “Design Patterns in Adaptive Web-Based Educational Systems” First International Workshop on Authoring of Adaptive and Adaptable Hypermedia, WBE'04 conference, Innsbruck, Austria, February 16-18, 2004 10. D. Bolser, E.O. de Brock, R. C. Jansen, A. Kozlenkov, P. Dafas, G. A. Papadopoulos, A. Robinson, M. Schroeder, A. Stavrou, M. A. Swertz, D. Vogiatzis, “The bioGRID System: A Trial of GRID Technology for the Biotech Industry”, Health Grid, Clermont Ferrand, France, 2004
        10. D .Vogiatzis, A. Tzanavari, S. Retalis, P. Avgeriou & A. Papasalouros, "The Learner's Mirror". In: Proceedings of the Ninth European Conference on Pattern Languages of Programs, Isree, Germany, July 2004
        11. N. Tsapatsoulis and D. Vogiatzis, “InUbiHealt: Intelligent Artefacts for Ubiquitous Health Monitoring”, Special Session on Image, Signal and Distributed Data Processing for Networked eHealth Applications' within the 5th International Network Conference (INC 2005), Samos, Greece, July, 2005
        12. D. Vogiatzis, A. Tzanavari, M. Zembylas, S. Retalis, “Clustering the affective aspects of web users”, 10th International Conference on User Modeling, Edinburgh, UK, 2005
        13. D. Vogiatzis D. and N. Tsapatsoulis, “Active Learning with Wavelets for Microarray Data”, Second International Meeting on Computational Intelligence Methods for Bioinformatics and Biostatistics,. WILF 2005 Springer-Verlag, LNCS series volume number 3849, Crema, Italy, Sept 2005
        14. A. Andreou, D. Vogiatzis and G. Papadopoulos, “Intelligent Classification and Retrieval of Software Components”, Compsac 2006, Chicago, USA, 2006
        15. D. Vogiatzis and N. Tsapatsoulis, “Missing Value Estimation for DNA Microarrays with Mutliresolution Schemes”, ICANN 2006, Athens, Greece, 2006
        16. D. Vogiatzis and N. Tsapatsoulis, “Clustering Microarray Data with Space Filling Curves”, CIBB 2007, Portofino, Italy, 2007
        17. E Kyriacou, C. Pattichis, M. Pattichis, A. Jossif, L. Paraskeva, A. Constantinides and D. Vogiatzis. “An m-Health Monitoring System for Children with Suspected Arrhythmias”, EMBC , Lyon, France, 2007
        18. D. Vogiatzis, D. Galanis, V. Karkaletsis, I. Androutsopoulos and C.D. Spyropoulos, “A Conversant Robotic Guide to Art Collections”, Language Technology for Cultural Heritage Data, (LaTeCH), Marrakech, Morocco, 2008
        19. D. Vogiatzis and E. Karkaletsis, “A Framework for Human-Robot Interaction”, 1st International Conference on Pervasive Technologies Related to Assistive Environments, PETRA, Athens, Greece, 2008
        20. D. Vogiatzis, C. D. Spyropoulos, S. Konstantopoulos, V. Karkaletsis, Z. Kasap, C. Matheson and O. Deroo, “An Affective Robot Guide to Museums”, 4th International Workshop on Human-Computer Conversation, Bellagio, Italy, 20
        21. D. Vogiatzis and N. Tsapatsoulis, “Modeling User Networks in Recommender Systems”, 3rd International Workshop on Semantic Media Adaptation and Personalization, Prague, Czech Republic, 2008
        22. E.Kyriacou, C. Pattichis, M. Pattichis, A. Jossif, D. Vogiatzis, L. Paraskeva, A. Konstantinides and A. Kounoudes, "An m-health system for continuous monitoring of children with suspected cardiac arrhythmias", 4th european conference of the international federation for medical and biological engineering, IFMBE Proceedings, 2009, Volume 22, Part 10, 1325-1328, DOI:
        23. 1007/978-3-540-89208-3_316
        24. V. Karkaletsis, S. Konstantopoulos, D. Bilidas, D. Vogiatzis, "INDIGO project: Personality and Dialogue Enabled Cognitive Robots", Proceedings of the PErvasive Technologies Related to Assistive Environments (PETRA), Samos, Greece, 2010
        25. M. Dima, D. Vogiatzis, G. Paliouras, "Expert Based Prediction of User Preferences", accepted at 5th International Workshop on Semantic Media Adaptation and Personalization (SMAP) , Limassol Cyprus, 2010
        26. D. Vogiatzis, “Influence Study on Hyper-Graphs”, Social Networks and Social Contagion, Social Networks and Social Contagion, Arlington, 2013
        27. A. Karavolia, D. Vogiatzis, B. Truong, A. Tapia, C. Caragea, A. Squicciarini and G. Paliouras, “Tweet Type, Location and Popularity: Case Study Hurricane Sandy”, KDD-LESI 2014
        28. G. Katsimpras, D. Vogiatzis and G. Paliouras. “Determining Influential Users with Supervised Random Walks”, 6th International Workshop on Modeling Social Media co-located with the 24th International World Wide Web Conference, 18-22 May 2015, Florence, Italy.
        29. D. Karna, G.. Diakidis, D. Fassarakis-Hilliard, D. Vogiatzis, and G.. Paliouras, "Predicting the Evolution of Communities in Social Networks", Proceedings of the 5th International Conference on Web Intelligence, Mining and Semantics, Limassol, Cyprus, 2015
        30. K. Zamani, G.. Paliouras, and D. Vogiatzis, "Similarity-based User Identification across Social Networks", Proceedings of the 3rd International Workshop on Similarity-Based Pattern Analysis and Recognition, Copenhangen, Denmark, 2015.
        31. Ch. Vlassopoulos, I. Kontopoulos, M. Apostolou, A. Artikis, D. Vogiatzis, “Dynamic graph management for streaming social media analytics”, Proceedings of the 10th International Conference on Distributed and Event-based Systems, 382—385, DEBS, Irvine, CA, USA, June 20 – 24, 2016
        32. D. Vogiatzis, A. Keros, “A density based algorithm for community detection in multi-partite networks”, Proceedings of the Semantic Media Adaptation and Personalization (SMAP) conference 2017
        33. M. Pavlopoulou, G. Tzortzis, D. Vogiatzis and G. Paliouras, “Predicting the Evolution of Communities in Social Networks Using Structural and Temporal Features”, Proceedings of the Semantic Media Adaptation and Personalization (SMAP) conference 2017
        34. Georgios Kechagias, Grigorios Tzortzis, Dimitrios Vogiatzis and Georgios Paliouras, “A Parallel Algorithm for Tracking Dynamic Communities based on Apache Flink”, Hellenic Conference on Artificial Intelligence (SETN), 2018
        35. George Athanasopoulos, George Paliouras, Dimitrios Vogiatzis, Grigorios Tzortzis and Nikos Katzouris: “Predicting the Evolution of Communities with Online Inductive Logic Programming”, 25th International Symposium on Temporal Representation and Reasoning (TIME) 2018
        36. Ilias Sarantopoulos , Dimitrios Papatheodorou , Dimitrios Vogiatzis , Grigorios Tzortzis , Georgios Paliouras, “TimeRank: a Random Walk approach for Community Discovery in Dynamic Network, Complex Networks” 2018
        37. Manuel Scurti, Ernestina Menasalvas-Ruiz, Maria Esther Vidal-Serodio, Maria Torrente, Dimitrios Vogiatzis, George Paliouras, Mariano Provencio, Alejandro Rodríguez-González, “A data-driven approach for analyzing healthcare services extracted from clinical records”, IEEE 33rd International Symposium on Computer Based Medical Systems (CBMS), 2020”.

        Technical Reports

          1. Tzanavari, A., Avgeriou, P. & Vogiatzis, D. "Patterns for Adaptive Web-based Educational Systems". Technical Report TR-2003-4, Department of Computer Science, University of Cyprus. December 2003
          2. D. Vogiatzis et al.,"Cyber Bullying and Online Grooming: Helping to protect against Risks", European Networks and Information Security Agency (ENISA), co-authored by Dimitrios Vogiatzis, Sept 2011

Contact Information.

Dimitrios Vogiatzis


Institute of Informatics and Telecommunications

NCSR "Demokritos

Ag. Paraskevi, 15310

Athens, Greece

Tel: +30 210 6503172

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