Interesting.Stuff

  • Diploma theses (gr) [pdf]
  • Curriculum Vitae (gr) [pdf]
  • Curriculum Vitae (en) [pdf]

journal.publications & book.chapters

  1. Fotios K. Anagnostopoulos, Spyros Rigas, Michalis Papachristou, Ioannis Chaniotis, Ioannis Anastasiou, Christos Tryfonopoulos and Paraskevi Raftopoulou.
    A novel AI framework for PM Pollution Prediction applied to a Greek port city.
    In Atmosphere, 2023.
    [pdf] [bib]

  2. Ioannis Papoutsis, Nikolaos Ioannis Bountos, Angelos Zavras, Dimitrios Michail and Christos Tryfonopoulos.
    Benchmarking and scaling of deep learning models for land cover image classification.
    In Journal of Photogrammetry and Remote Sensing, Elsevier, 2022.
    [pdf] [bib]

  3. Konstantinos I. Roumeliotis, Nikolaos D. Tselikas and Christos Tryfonopoulos.
    Greek Hotels' Web Traffic: A Comparative Study Based on Search Engine Optimization Techniques and Technologies.
    In Digital 2(3): 379-400, 2022.
    [pdf] [bib]

  4. Paris Koloveas, Thanassis Chantzios, Christos Tryfonopoulos, and Spiros Skiadopoulos.
    Cyber-Threat Intelligence.
    In Security Technologies and Methods for Advanced Cyber Threat Intelligence, Detection and Mitigation Book, Gohar Sargsyan, Dimitrios Kavallieros, and Nicholas Kolokotronis (editors), Now Publishers, pp. 24-51, 2022.
    [pdf] [bib]

  5. Damianos P. Sakas, Nikolaos T. Giannakopoulos, Nikos Kanellos and Christos Tryfonopoulos.
    Digital Marketing Enhancement of Cryptocurrency Websites through Customer Innovative Data Process.
    In Processes 10(5): 960, 2022.
    [pdf] [bib]

  6. Serafeim Chatzopoulos, Thanasis Vergoulis, Ilias Kanellos, Theodore Dalamagas, and Christos Tryfonopoulos.
    Further Improvements on Estimating the Popularity of Recently Published Papers.
    In Quantitative Science Studies (QSS), MIT Press, pages 1-36, November 2021.
    [pdf] [bib]

  7. Serafeim Chatzopoulos, Thanasis Vergoulis, Theodore Dalamagas, and Christos Tryfonopoulos.
    VeTo+: Improved Expert Set Expansion in Academia.
    In International Journal on Digital Libraries (IJDL), Springer Nature, 2021.
    [pdf] [bib]

  8. Paris Koloveas, Thanasis Chantzios, Sofia Alevizopoulou, Spiros Skiadopoulos, and Christos Tryfonopoulos.
    inTIME: A Machine Learning-Based Framework for Gathering and Leveraging Web Data to Cyber-Threat Intelligence.
    In Electronics 10(7): 818, 2021.
    [pdf] [bib]

  9. E. Giannitsioti, A. Pefanis, C. Gogos, A. Lekkou, G.N. Dalekos, N. Gatselis, S. Georgiadou, P. Nikou, A. Vrettou, A. Rigopoulos, C. Tryfonopoulos, T. Tsaganos, E. Karofilakis, C. Psarrakis, M. Argyriou, P. Gargalianos-Kakolyris, G. Adamis, P. Lourida, D. Kofteridis, A. Andrianaki, C. Loupa, E. Kostis, D. Sinapidis, S. Sympardi, N. Alexiou, I. Karaiskos, A. Masgala, E. Maltezos, P. Panagopoulos, V. Sachpekidis, C. Evdoridis, N.V. Sipsas, G. Daikos, and H. Giamarellou.
    Evolution of epidemiological characteristics of infective endocarditis in Greece.
    In International Journal of Infectious Diseases (IJID), Springer, 2021.
    [pdf] [bib]

  10. Kimon Deligiannis, Paraskevi Raftopoulou, Christos Tryfonopoulos, Nikos Platis, and Costas Vassilakis.
    Hydria: An Online Data Lake for Multi-Faceted Analytics in the Cultural Heritage Domain.
    In Big Data and Cognitive Computing, 4(2): 7, 2020.
    [pdf] [bib]

  11. Lefteris Zervakis, Christos Tryfonopoulos, Spiros Skiadopoulos, and Manolis Koubarakis.
    Query Reorganisation Algorithms for Efficient Boolean Information Filtering.
    In IEEE Transactions on Knowledge and Data Engineering (TKDE) 29(2): 418-432, 2017.
    [pdf] [bib]

  12. Giorgos Poulis, Aris Gkoulalas-Divanis, Grigorios Loukides, Spiros Skiadopoulos, and Christos Tryfonopoulos.
    Secreta: A Tool for Anonymizing Relational, Transaction and RT-datasets.
    In Medical Data Privacy Handbook, Aris Gkoulalas-Divanis and Grigorios Loukides (editors), Springer, pp. 83-109, 2015.
    [pdf (flyer)] [bib]

  13. Christos Tryfonopoulos, Stratos Idreos, Manolis Koubarakis, and Paraskevi Raftopoulou.
    Distributed Large-Scale Information Filtering.
    In LNCS Transactions on Large-Scale Data- and Knowledge-Centered Systems (TLDKS), Springer, 13:91-122, 2014.
    [pdf] [bib]

  14. Paraskevi Raftopoulou, Euripides G.M. Petrakis, and Christos Tryfonopoulos.
    Rewiring Strategies for Semantic Overlay Networks.
    In Distributed and Parallel Databases (DAPD), Springer, 26(2-3): 181-205, 2009
    [pdf] [bib]

  15. Christos Tryfonopoulos, Manolis Koubarakis, and Yannis Drougas.
    Information Filtering and Query Indexing for an Information Retrieval Model.
    In ACM Transactions on Information Systems (TOIS), 27(2), 2009.
    [pdf] [bib]

  16. Christos Tryfonopoulos, Christian Zimmer, Manolis Koubarakis and Gerhard Weikum.
    Architectural Alternatives for Information Filtering in Structured Overlay Networks.
    In IEEE Internet Computing, 11(4): 24-34, 2007.
    [pdf] [bib]

  17. Manolis Koubarakis, Spiros Skiadopoulos, and Christos Tryfonopoulos.
    Logic and Computational Complexity for Boolean Information Retrieval.
    In IEEE Transactions on Knowledge and Data Engineering (TKDE), 18(12): 1659-1666, 2006.
    [pdf] [bib]

  18. Manolis Koubarakis, Christos Tryfonopoulos, Stratos Idreos, and Yannis Drougas.
    Selective Information Dissemination in P2P Networks: Problems and Solutions.
    In SIGMOD Record, Special Issue on Peer-to-Peer Data Management, 32(3):71-76, 2003.
    [pdf] [bib]

conference.publications

  1. Charis Kotsiopoulos, Nikos Dimitrakopoulos, and Christos Tryfonopoulos.
    DinoAI - An interactive self-playing retro game/display for exploring Machine Learning concepts.
    In Proceedings of the 10th Central and Eastern European Game Studies (CEEGS), Nafplio, Greece, October 2024.
    [pdf] [bib]

  2. Paris Koloveas, Serafeim Chatzopoulos, Christos Tryfonopoulos, and Thanasis Vergoulis.
    BIP! NDR (NoDoiRefs): A Dataset of Citations From Papers Without DOIs in Computer Science Conferences and Workshops.
    In Proceedings of the 27th International Conference on Theory and Practice of Digital Libraries (TPDL), Zadar, Croatia, September 2023.
    [pdf] [bib]

  3. Angelos Zavras, Ioannis Papoutsis, Dimitrios Michail, Christos Tryfonopoulos, and Begum Demir.
    Leveraging Class Label Semantic Information for Zero-Shot Land Use Land Cover Scene Classification.
    In Proceedings of the 43rd IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Pasadena, California, USA, July 2023. [pdf] [bib]

  4. George Fotopoulos, Paris Koloveas, Paraskevi Raftopoulou, and Christos Tryfonopoulos.
    Comparing Data Store Performance for Full-Text Search: to SQL or to NoSQL?
    In Proceedings of the 12th International Conference on Data Science, Technology and Applications (DATA), Rome, Italy, July 2023.
    [pdf] [bib]

  5. Kimon Deligiannis, Christos Tryfonopoulos, Paraskevi Raftopoulou, Nikos Platis, and Costas Vassilakis.
    EnQuest: A Cloud Datalake Infrastructure for Heterogeneous Analytics in Maritime and Tourism Domains.
    In Proceedings of the 12th International Conference on Data Science, Technology and Applications (DATA), Rome, Italy, July 2023. (demo track)
    [pdf] [bib]

  6. Serafeim Chatzopoulos, Thanasis Vergoulis, Dimitrios Skoutas, Theodore Dalamagas, Christos Tryfonopoulos, and Panagiotis Karras.
    Atrapos: Evaluating Metapath Query Workloads in Real Time.
    In Proceedings of the 32nd ACM Web Conference (WWW), Austin, Texas, USA, April 2023.
    [pdf] [bib]

  7. Fotios K. Anagnostopoulos, Spyros Rigas, Christos Tryfonopoulos, Michalis Papachristou, Ioannis Chaniotis and Paraskevi Raftopoulou.
    Towards a General Forecasting Framework for Particulate Matter within Urban Environments.
    In Proceedings of the American Geophysical Union Conference (AGU), Chicago, USA, December 2022. (poster)
    [pdf] [bib]

  8. Fotios K. Anagnostopoulos, Spyros Rigas, Michalis Papachristou, Christos Tryfonopoulos, and Ioannis Chaniotis.
    Forecasting PM2.5 concentration in port-cities.
    In Proceedings of the 11th International Aerosol Conference (IAC), Athens, Greece, September 2022. (poster)
    [pdf] [bib]

  9. Christos Tryfonopoulos and Amalia Polydoropoulou.
    ENIRISST: the first data infrastructure for shipping and transport in Greece.
    In Proceedings of the 11th International Conference on Data Science, Technology and Applications (DATA), Lisbon, Portugal, July 2022. (abstract announcement)
    [pdf] [bib]

  10. Serafeim Chatzopoulos, Thanasis Vergoulis, Theodore Dalamagas, and Christos Tryfonopoulos.
    VeTo-web: A Recommendation Tool for the Expansion of Sets of Scholars.
    In Proceedings of the 21st Joint Conference on Digital Libraries (JCDL), Urbana-Champaign, USA, September 2021. (demo track)
    [pdf] [bib]

  11. Serafeim Chatzopoulos, Thanasis Vergoulis, Panagiotis Deligiannis, Dimitrios Skoutas, Theodore Dalamagas and Christos Tryfonopoulos.
    SciNeM: A Scalable Data Science Tool for Heterogeneous Network Mining.
    In Proceedings of the 24th International Conference on Extending Database Technology (EDBT), Nicosia, Cyprus, March 2021. (demo track)
    [pdf] [bib]

  12. Amalia Polydoropoulou, Manolis Maragkoudakis, Ioanna Pagoni, Athena Tsirimpa, Annitsa Koumoutsidi, Ioannis Tsouros and Christos Tryfonopoulos.
    Setting the Basis and Designing the Data Architecture for the ENIRISST Research Infrastructure.
    In Proceedings of the 14th Balkan Conference on Operational Research (BALCOR), Thessaloniki, Greece, October 2020. (abstract announcement)
    [pdf] [bib]

  13. Thanasis Vergoulis, Serafeim Chatzopoulos, Theodore Dalamagas and Christos Tryfonopoulos.
    VeTo: Expert Set Expansion in Academia.
    In Proceedings of the 24th International Conference on Theory and Practice of Digital Libraries (TPDL), Lyon, France, August 2020.
    [pdf] [bib]

  14. Lefteris Zervakis, Vinay Setty, Christos Tryfonopoulos, and Katja Hose.
    Efficient Continuous Multi-Query Processing over Graph Streams.
    In Proceedings of the 23rd International Conference on Extending Database Technology (EDBT), Copenhagen, Denmark, March 2020.
    [pdf] [bib]

  15. Thanasis Vergoulis, Serafeim Chatzopoulos, Ilias Kanellos, Panagiotis Deligiannis, Christos Tryfonopoulos, and Theodore Dalamagas.
    BIP! Finder: Facilitating Scientific Literature Search by Exploiting Impact-Based Ranking.
    In Proceedings of the 28th ACM International Conference on Information and Knowledge Management (CIKM), Beijing, China, November 2019. (demo track)
    [pdf] [bib]

  16. Charis Kotsiopoulos, Ioannis Doudoumis, Paraskevi Raftopoulou and Christos Tryfonopoulos.
    DaST: An Online Platform for Automated Exercise Generation and Solving in the Data Science Domain.
    In Proceedings of the 8th Computer Science Education Research Conference (CSERC), Larnaca, Cyprus, November 2019.
    [pdf] [bib]

  17. Serafeim Chatzopoulos, Panagiotis Deligiannis, Thanasis Vergoulis, Ilias Kanellos, Christos Tryfonopoulos, and Theodore Dalamagas.
    SciTo trends: visualising scientific topic trends.
    In Proceedings of the 23rd International Conference on Theory and Practice of Digital Libraries (TPDL), Oslo, Norway, September 2019. (demo track)
    [pdf] [bib]

  18. Thanasis Chantzios, Paris Koloveas, Spiros Skiadopoulos, Nikos Kolokotronis, Christos Tryfonopoulos, Vasiliki-Georgia Bilali, and Dimitris Kavallieros.
    The quest for the appropriate cyber-threat intelligence sharing platform.
    In Proceedings of the 8th International Conference on Data Science, Technology and Applications (DATA), Prague, Czech Republic, July 2019.
    [pdf] [bib]

  19. Thanasis Chantzios, Lefteris Zervakis, Spiros Skiadopoulos, and Christos Tryfonopoulos.
    Ping - A customizable, open-source information filtering system for textual data.
    In Proceedings of the 13th ACM International Conference on Distributed and Event-based Systems, (DEBS), Darmstadt, Germany, June 2019. (demo track)
    [pdf] [bib]

  20. E. Giannitsioti, A. Pefanis, C. Gogos, A. Lekkou, G. Dalekos, N. Gatselis, S. Georgiadou, P. Nikou, A. Vrettou, A. Rigopoulos, C. Tryfonopoulos, T. Tsaganos, M. Argyriou, P. Gargalianos-Kakolyris, G. Adamis, P. Lourida, D. Kofteridis, A. Adrianaki, C. Loupa, E. Kostis, D. Sinapidis, S. Sympardi, N. Alexiou, I. Karaiskos, A. Masgala, E. Maltezos, P. Panagopoulos, V. Sachpekidis, K. Evdoridis, N. Sipsas, G. Daikos, H. Giamarellou.
    Early surgery for infective endocarditis: results from a multi-centre nationwide epidemiological study.
    In Proceedings of the International Society of Cardiovascular Infectious Diseases Symposium (ISCVID), Lausanne, Switzerland, June 2019. (poster)
    [pdf] [bib]

  21. Joanna Asia Biega, Krishna P. Gummadi, Ida Mele, Dragan Milchevski, Christos Tryfonopoulos, and Gerhard Weikum.
    R-Susceptibility: An IR-Centric Approach to Assessing Privacy Risks for Users in Online Communities.
    In Proceedings of the 39th International ACM SIGIR Conference, Pisa, Italy, July 2016.
    [pdf] [bib]

  22. Lefteris Zervakis, Christos Tryfonopoulos, Spiros Skiadopoulos, and Manolis Koubarakis.
    Full-text Support for Publish/Subscribe Ontology Systems.
    In Proceedings of the Extended Semantic Web Conference (ESWC), Crete, Greece, May 2016. Short-listed for best paper award.
    [pdf] [bib]

  23. Amalia Tsafara, Christos Tryfonopoulos, Spiros Skiadopoulos, and Lefteris Zervakis.
    Cloud-Based Data and Knowledge Management for Multi-Centre Biomedical Studies.
    In Proceedings of the International Conference on Knowledge Capture (K-CAP), Palisades NY, USA, October 2015. (short papers track)
    [pdf] [bib]

  24. Christos Tryfonopoulos, Paraskevi Raftopoulou, Vinay Setty, and Argiris Xiros.
    Towards Content-Based Publish/Subscribe for Distributed Social Networks.
    In Proceedings of the International Conference on Distributed Event-Based Systems (DEBS), Oslo, Norway, June 2015. (poster track)
    [pdf] [bib]

  25. Dimitris Giouroukis, Nikos Platis, and Christos Tryfonopoulos.
    PViz: Visualising P2P Multi-Agent Simulations.
    In Proceedings of the International Conference on Autonomous Agents and Multiagent Systems (AAMAS), Istanbul, Turkey, May 2015. (demo track)
    [pdf] [bib]

  26. Giorgos Poulis, Aris Gkoulalas-Divanis, Grigorios Loukides, Spiros Skiadopoulos, and Christos Tryfonopoulos.
    SECRETA: A System for Evaluating and Comparing RElational and Transaction Anonymization algorithms.
    In Proceedings of the 17th International Conference on Extending Database Technology (EDBT), Athens, Greece, March 2014. (demo track)
    [pdf] [bib]

  27. Jenny Rompa, Christos Tryfonopoulos, Costas Vassilakis, and George Lepouras.
    Mindmap-Inspired Semantic Personal Information Management.
    In Proceedings of the 17th International Conference on Extending Database Technology (EDBT), Athens, Greece, March 2014. (demo track)
    [pdf] [bib]

  28. Amalia Tsafara, Christos Tryfonopoulos, and Spiros Skiadopoulos.
    CloudStudy: A Cloud-Based System for Supporting Multi-Centre Studies.
    In Proceedings of the 13th IEEE International Conference on BioInformatics and BioEngineering (BIBE), Chania, Greece, November 2013.
    [pdf] [bib]

  29. Paraskevi Raftopoulou, Christos Tryfonopoulos, Euripides G.M. Petrakis, and Nikos Zevlis.
    DS4: Introducing Semantic Friendship in Distributed Social Networks.
    In Proceedings of the 21st International Conference on Cooperative Information Systems (CoopIS), Graz, Austria, September 2013.
    [pdf] [bib]

  30. Dionisis Kontominas, Paraskevi Raftopoulou, Christos Tryfonopoulos, and Euripides G.M. Petrakis.
    DS4: A Distributed Social and Semantic Search System.
    In Proceedings of the European Conference on Information Retrieval (ECIR), Moscow, Russia, March 2013. (demo track)
    [pdf] [bib]

  31. Lefteris Zervakis, Christos Tryfonopoulos, Antonios Papadakis-Pesaresi, Manolis Koubarakis and Spiros Skiadopoulos.
    Textual Publish/Subscribe Ontology Systems.
    In Proceedings of the Extended Semantic Web Conference (ESWC), Crete, Greece, May 2012. (poster track). Honorable mention (3rd place) for best poster award.
    [pdf] [bib]

  32. Christos Tryfonopoulos and Laura-Maria Andreescu.
    Pricing Information Goods in Distributed Agent-based Information Filtering.
    In Proceedings of the 19th International Conference on Cooperative Information Systems (CoopIS), Crete, Greece, October 2011.
    [pdf] [bib]

  33. Jenny Rompa, Giorgos Lepouras, Costas Vassilakis, and Christos Tryfonopoulos.
    OntoFM: A Personal Ontology-based File Manager for the Desktop.
    In Proceedings of the International Semantic Web Conference (ISWC), Bonn, Germany, October 2011. (demo track)
    [pdf] [bib]

  34. Michael Backes, Marek Hamerlik, Alessandro Linari, Matteo Maffei, Christos Tryfonopoulos, and Gerhard Weikum.
    Anonymity and Censorship Resistance in Unstructured Overlay Networks.
    In Proceedings of the 17th International Conference on Cooperative Information Systems (CoopIS), Vilamoura, Portugal, November 2009.
    [pdf] [bib]

  35. Avishek Anand, Srikanta Bedathur, Klaus Berberich, Ralf Schenkel, and Christos Tryfonopoulos.
    EverLast: A Distributed Architecture for Preserving the Web.
    In Proceedings of the Joint Conference on Digital Libraries (JCDL), Austin, Texas, June 2009.
    [pdf] [bib]

  36. Paraskevi Raftopoulou, Euripides G.M. Petrakis, Christos Tryfonopoulos, and Gerhard Weikum.
    Information Retrieval and Filtering over Self-Organising Digital Libraries.
    In Proceedings of the 12th European Conference on Research and Advanced Technology for Digital Libraries (ECDL), Aarhus, Denmark, September 2008.
    [pdf] [bib]

  37. Christian Zimmer, Johannes Heinz, Christos Tryfonopoulos, and Gerhard Weikum.
    P2P Information Retrieval and Filtering with MAPS.
    In Proceedings of the IEEE International Conference on Peer-to-Peer Computing (P2P), Aachen, Germany, September 2008. (demo track)
    [pdf] [bib]

  38. Christian Zimmer, Christos Tryfonopoulos, Klaus Berberich, Manolis Koubarakis, and Gerhard Weikum.
    Approximate Information Filtering in Peer-to-Peer Networks.
    In Proceedings of the 9th Web Information Systems Engineering (WISE) Conference, Auckland, New Zealand, September 2008.
    [pdf] [bib]

  39. Michael Backes, Marek Hamerlik, Alessandro Linari, Matteo Maffei, Christos Tryfonopoulos, and Gerhard Weikum.
    Anonymous and Censorship-resistant Content-sharing in Unstructured Overlays.
    In Proceedings of the ACM Symposium on Principles of Distributed Computing (PODC), Toronto, Canada, August 2008. (brief announcements track)
    [pdf] [bib]

  40. Christian Zimmer, Christos Tryfonopoulos, and Gerhard Weikum.
    Exploiting Correlated Keywords to Improve Approximate Information Filtering.
    In Proceedings of the 31st International ACM SIGIR Conference, Singapore, July 2008.
    [pdf] [bib]

  41. Christian Zimmer, Christos Tryfonopoulos, and Gerhard Weikum.
    MinervaDL: An Architecture for Information Retrieval and Filtering in Distributed Digital Libraries.
    In Proceedings of the 11th European Conference on Research and Advanced Technology for Digital Libraries (ECDL), Budapest, Hungary, September 2007.
    [pdf] [bib]

  42. Christian Zimmer, Christos Tryfonopoulos and Gerhard Weikum
    Efficient Search and Approximate Information Filtering in a Distributed Peer-to-Peer Environment of Digital Libraries.
    In Proceedings of the DELOS Conference on Digital Libraries, Pisa, Italy, February 2007.
    [pdf] [bib]

  43. Stratos Idreos, Christos Tryfonopoulos, and Manolis Koubarakis.
    Distributed Evaluation of Continuous Equi-join Queries over Large Structured Overlay Networks.
    In Proceedings of the 22nd International Conference on Data Engineering (ICDE), Atlanta, USA, April 2006.
    [pdf] [bib]

  44. Christos Tryfonopoulos, Stratos Idreos, and Manolis Koubarakis.
    LibraRing: An Architecture for Distributed Digital Libraries Based on DHTs.
    In Proceedings of the 9th European Conference on Research and Advanced Technology for Digital Libraries (ECDL), pages 25-36, Vienna, Austria, September 2005. Best student paper award.
    [pdf] [bib]

  45. Christos Tryfonopoulos, Stratos Idreos, and Manolis Koubarakis.
    Publish/Subscribe Functionality in IR Environments using Structured Overlay Networks.
    In Proceedings of the 28th International ACM SIGIR Conference, Salvador, Brazil, August 2005.
    [pdf] [bib]

  46. Stratos Idreos, Manolis Koubarakis, and Christos Tryfonopoulos.
    P2P-DIET: One-Time and Continuous Queries in Super-Peer Networks.
    In Proceedings of the 9th International Conference on Extending Database Technology (EDBT), pages 851-853, Heraklion, Greece, March 2004. (demo track)
    [pdf] [bib]

  47. Christos Tryfonopoulos, Manolis Koubarakis, and Yannis Drougas.
    Filtering Algorithms for Information Retrieval Models with Named Attributes and Proximity Operators.
    In Proceedings of the 27th International ACM SIGIR Conference, Sheffield, UK, July 2004.
    [pdf] [bib]

  48. Stratos Idreos, Manolis Koubarakis, and Christos Tryfonopoulos.
    P2P-DIET: An Extensible P2P Service that Unifies Ad-hoc and Continuous Querying in Super-Peer Networks.
    In Proceedings of the ACM SIGMOD Conference, Paris, France, June 2004. (demo track)
    [pdf] [bib]

  49. Manolis Koubarakis, Theodoros Koutris, Christos Tryfonopoulos, and Paraskevi Raftopoulou.
    Information Alert in Distributed Digital Libraries: The Models, Languages, and Architecture of DIAS.
    In Proceedings of the 6th European Conference on Research and Advanced Technology for Digital Libraries (ECDL), pages 527-542, Rome, Italy, September 2002.
    [pdf] [bib]

workshop.publications

  1. George Xyrafis, Anastasios Theodoropoulos, and Christos Tryfonopoulos.
    Using Machine Learning for Facial Emotion Expressiveness Rating of Actors.
    In Proceedings of the International Workshop on Performing Personality in Game Characters and Digital Narratives (MOCAP @ CEEGS), Nafplio, Greece, October 2024.
    [pdf] [bib]

  2. Sotiris Nikoletos, Stefanos Vlachos, Efstathios Zaragkas, Costas Vassilakis, Christos Tryfonopoulos, and Paraskevi Raftopoulou.
    RoG: A Pipeline for Automated Sensitive Data Identification and Anonymisation.
    In Proceedings of the 3rd International Workshop on Data Science for Cyber Security (DS4CS @ IEEE CSR), Venice, Italy, July 2023.
    [pdf] [bib]

  3. Nikos Nikoloutsakos and Christos Tryfonopoulos.
    Best Practices on Deploying Scalable and Effective Deep Learning on HPC.
    In Proceedings of the European HPC Summit Week (EuroHPC), March 2022.
    [pdf] [bib]

  4. Kimon Deligiannis, Paraskevi Raftopoulou, Christos Tryfonopoulos, and Costas Vassilakis.
    A System for Collecting, Managing, Analyzing and Sharing Diverse, Multi-faceted Cultural Heritage and Tourism Data.
    In Proceedings of the 16th International Workshop on Semantic and Social Media Adaptation and Personalization (SMAP), November 2021.
    [pdf] [bib]

  5. Sofia Alevizopoulou, Paris Koloveas, Christos Tryfonopoulos, and Paraskevi Raftopoulou.
    Social Media Monitoring for IoT Cyber-Threats.
    In Proceedings of the International Workshop on Data Science for Cyber Security (DS4CS @ IEEE CSR), Rhodes, Greece, July 2021.
    [pdf] [bib]

  6. Panagiotis Deligiannis, Thanasis Vergoulis, Serafeim Chatzopoulos, and Christos Tryfonopoulos.
    Visualising Scientific Topic Evolution.
    In Proceedings of the International Workshop on Scientific Knowledge: Representation, Discovery, and Assessment (Sci-K @ WWW), Ljubljana, Slovenia, April 2021.
    [pdf] [bib]

  7. Serafeim Chatzopoulos, Thanasis Vergoulis, Ilias Kanellos, Theodore Dalamagas, and Christos Tryfonopoulos.
    ArtSim: Improved estimation of current impact for recent articles.
    In Proceedings of the International Workshop on Assessing Impact and Merit in Science (AIMinScience @ TPDL), Lyon, France, August 2020.
    [pdf] [bib]

  8. Paris Koloveas, Thanasis Chantzios, Christos Tryfonopoulos, and Spiros Skiadopoulos.
    A crawler architecture for harvesting the clear, social, and dark web for IoT-related cyber-threat intelligence.
    In Proceedings of the IEEE Workshop on Cyber Security & Resilience in the Internet of Things (CSRIoT @ IEEE Services), Milan, Italy, July 2019.
    [pdf] [bib]

  9. Christos Tryfonopoulos
    Efficient and Expressive Semantic Information Push for Cultural Heritage Applications.
    In Proceedings of the International Workshop on Semantic Web for Cultural Heritage (SW4CH @ ESWC), Crete, Greece, 2018.
    [pdf] [bib]

  10. Lefteris Zervakis, Christos Tryfonopoulos, Vinay Setty, Stephan Seufert, and Spiros Skiadopoulos.
    Towards Publish/Subscribe Functionality on Graphs.
    In Proceedings of the International Workshop on Preservation of Evolving Big Data (DIACHRON @ EDBT), Bordeaux, France, March 2016.
    [pdf] [bib]

  11. Alexander Prohaska, Christos Tryfonopoulos, and Georgiana Ifrim.
    Constructing Subsumption Hierarchies of Web Queries.
    In Proceedings of the International Workshop on Dataset PROFIling and fEderated Search for Linked Data (PROFILES @ ESWC), Portoroz, Slovenia, May 2015.
    [pdf] [bib]

  12. Christian Zimmer, Christos Tryfonopoulos, Klaus Berberich, Gerhard Weikum and Manolis Koubarakis.
    Node Behavior Prediction for Large-Scale Approximate Information Filtering.
    In Proceedings of the International Workshop on Large-Scale Distributed Systems for Information Retrieval (LSDS-IR @ SIGIR), Amsterdam, The Netherlands, July 2007.
    [pdf] [bib]

  13. Klaus Berberich, Manolis Koubarakis, Christos Tryfonopoulos, Gerhard Weikum, and Christian Zimmer.
    MAPS: Approximate Publish/Subscribe Functionality in Peer-to-Peer Networks.
    In Proceedings of Advanced Data Processing in Ubiquitous Computing Workshop (ADPUC @ Middleware), Melbourne, Australia, November 2006.
    [pdf] [bib]

  14. Christos Tryfonopoulos, Stratos Idreos, and Manolis Koubarakis.
    Publish/Subscribe Functionalities for Future Digital Libraries using Structured Overlay Networks.
    In Proceedings of the 8th International Workshop of the DELOS Network of Excellence on Digital Libraries on Future Digital Library Management Systems, Schloss Dagstuhl, Germany, March 2005.
    [pdf] [bib]

  15. Christos Tryfonopoulos and Manolis Koubarakis.
    Implementing Publish/Subscribe Systems with Languages from Information Retrieval on Top of Structured Overlay Networks.
    In Proceedings of the International Workshop on Peer-to-Peer and IR (P2P&IR @ SIGIR), Sheffield, UK, July 2004.
    [pdf] [bib]

  16. Christos Tryfonopoulos and Manolis Koubarakis.
    Publish/Subscribe Systems with Distributed Hash Tables and Languages from Information Retrieval.
    In Proceedings of the 6th Workshop on Distributed Data and Structures (WDAS), Lausanne, Switzerland, July 2004.
    [pdf] [bib]

  17. Christos Tryfonopoulos and Manolis Koubarakis.
    Distributed Resource Sharing using Self-Organized Peer-to-Peer Networks and Languages from Information Retrieval.
    In Proceedings of the International Workshop on Self-* Properties in Complex Information Systems (Self*), Bertinoro, Italy, May 2004.
    [pdf] [bib]

  18. Stratos Idreos, Christos Tryfonopoulos, Manolis Koubarakis, and Yannis Drougas.
    Query Processing in Super-Peer Networks with Languages Based on Information Retrieval: the P2P-DIET Approach.
    In Proceedings of the International Workshop on Peer-to-peer Computing and Databases (P2P&DB @ EDBT), Herakion, Greece, March 2004.
    [pdf] [bib]

  19. Manolis Koubarakis and Christos Tryfonopoulos.
    Peer-to-peer Agent Systems for Textual Information Dissemination: Algorithms and Complexity.
    In Proceedings of the UK Workshop on Multiagent Systems (UKMAS), Liverpool, UK, December 2002.
    [pdf] [bib]

  20. Manolis Koubarakis, Christos Tryfonopoulos, Paraskevi Raftopoulou, and Theodoros Koutris.
    Data Models and Languages for Agent-Based Textual Information Dissemination.
    In Proceedings of the 6th International Workshop on Cooperative Information Agents (CIA), volume 2446 of Lecture Notes in Artificial Intelligence, pages 179-193, Madrid, Spain, September 2002. Springer.
    [pdf] [bib]

  21. P. Marrow, M. Koubarakis, R.H. van Lengen, F. Valverde-Albacete, E. Bonsma, J. Cid-Suerio, A.R. Figueiras-Vidal, A. Gallardo-Antolin, C. Hoile, T. Koutris, H. Molina-Bulla, A. Navia-Vazquez, P. Raftopoulou, N. Skarmeas, C. Tryfonopoulos, F. Wang, and C. Xiruhaki.
    Agents in Decentralised Information Ecosystems: The DIET Approach.
    In Proceedings of the Symposium on Information Agents for E-Commerce, AISB Convention, York, UK, March 2001.
    [pdf] [bib]

national.venues

  1. Nikolia Tsapalou, Mania Alexaki and Christos Tryfonopoulos.
    WeCare in University of the Peloponnese as a means of reducing social exclusion in education.
    In Proceedings of the 5th Hellenic Conference on Sociology of Education (SocEdu), Patras, Greece, October 2022.
    [pdf (in greek)] [bib]

  2. Thanasis Vergoulis, Ilias Kanellos, Serafeim Chatzopoulos, Christos Tryfonopoulos, Theodore Dalamagas, Yannis Vassiliou.
    Pub Finder: Assisting the discovery of qualitative research.
    In Proceedings of the 16th Hellenic Data Management Symposium (HDMS), Larnaca, Cyprus, July 2018.
    [pdf] [bib]

  3. Christos Tryfonopoulos, Charis Kotsiopoulos, Paraskevi Raftopoulou.
    Data Science Tutor: An online platform for automated exercise solving in Data Science.
    In Proceedings of the 9th Conference on Computer Science Teaching (DIDINFO), Thessaloniki, Greece, 2018.
    [pdf (in greek)] [bib]

  4. Christos Tryfonopoulos
    A Methodology for the Automatic Creation of Massive Continuous Query Datasets from Real-Life Corpora.
    In Proceedings of the 7th International Conference on Advanced Computer Science and Information Technology (ICAIT), Vienna, Austria, 2018.
    [pdf] [bib]

  5. Christos Tryfonopoulos
    The Effect of Introducing Content Price in Distributed Social Networks.
    In Proceedings of the 23rd Conference on Information Technologies (IT), Kaunas, Lithuania, April 2018.
    [pdf] [bib]

  6. Lefteris Zervakis, Christos Tryfonopoulos, Spiros Skiadopoulos, and Manolis Koubarakis
    Query Reorganization Algorithms for Efficient Boolean Information Filtering.
    In Proceedings of the 15th Hellenic Data Management Symposium (HDMS), Athens, Greece, August 2017.
    [bib]

  7. Lefteris Zervakis, Christos Tryfonopoulos, Spiros Skiadopoulos, and Manolis Koubarakis
    Full-Text Support for Publish/Subscribe Ontology Systems.
    In Proceedings of the 15th Hellenic Data Management Symposium (HDMS), Athens, Greece, August 2017.
    [bib]

  8. K. Masselos, C. Vassilakis, G. Lepouras, C. Tryfonopoulos, N. Tselikas, and N. Platis.
    A Platform for the Presentation and Dissemination of Cultural Heritage Information for Mobile Devices Enriched with Augmented Reality.
    In Proceedings of the Greek Conference for the Digitization of Cultural Information (EUROMED), Volos, Greece, September 2015.
    [pdf (in greek)] [bib]

  9. Greek Working Group for Infective Endocarditis, Spiros Skiadopoulos, and Christos Tryfonopoulos
    Greek Multi-Centre Epidemiological Study on Infective Endocarditis: Initial Results.
    In Infections 2013, Hellenic Society for Infectious Diseases, Athens, Greece, February 2013.
    [bib]

  10. Avishek Anand, Srikanta Bedathur, Klaus Berberich, Ralf Schenkel, and Christos Tryfonopoulos
    EverLast: A Distributed Architecture for Preserving the Web.
    In Proceedings of the 8th Hellenic Data Management Symposium (HDMS), Athens, Greece, August 2009.
    [bib]

  11. Christos Tryfonopoulos. P2P Information Retrieval and Filtering. In HAIS, May 2008.
    [bib]

  12. Christos Tryfonopoulos, Christian Zimmer, Manolis Koubarakis, and Gerhard Weikum
    Architectural Alternatives for Information Filtering in Structured Overlay Networks.
    In Proceedings of the 6th Hellenic Data Management Symposium (HDMS), Athens, Greece, July 2007.
    [bib]

  13. Christos Tryfonopoulos. P2P Techniques for Web Information Retrieval and Filtering. In BCS-IRSG, 2005.
    [bib]

  14. Christos Tryfonopoulos, Stratos Idreos, and Manolis Koubarakis.
    Publish/Subscribe Functionality in IR Environments using Structured Overlay Networks.
    In Proceedings of the 4th Hellenic Data Management Symposium (HDMS), Athens, Greece, August 2005.
    [bib]

  15. Christos Tryfonopoulos, Manolis Koubarakis, and Yannis Drougas.
    Filtering Algorithms for Information Retrieval Models with Named Attributes and Proximity Operators.
    In Proceedings of the 3rd Hellenic Data Management Symposium (HDMS), Athens, Greece, March 2004.
    [bib]

  16. Manolis Koubarakis, Theodoros Koutris, Paraskevi Raftopoulou, and Christos Tryfonopoulos.
    Efficient Agent-Based Dissemination of Textual Information.
    In Proceedings of the 2nd Hellenic Conference on Artificial Intelligence (SETN), Thessaloniki, Greece, April 2002.
    [bib]

theses/reports/non-reviewed.articles

  1. Christos Tryfonopoulos.
    ENIRISST+: Data management for the national research infrastructure for transport, logistics and supply chain.
    In Proceedings of the 1st Conference on Climate Change and New Technologies (CTK), Kalamata, Greece, May 2023.
    [pdf (in greek)] [bib]

  2. Paris Koloveas, Thanasis Chantzios, Spiros Skiadopoulos, Christos Tryfonopoulos, and Nikos Kolokotronis.
    Collection, analysis and sharing of cyber-threat intelligence: the inTIME system.
    Greek Free/Open Source Software Society (GFOSS), 2021.
    [pdf] [bib]

  3. Christos Tryfonopoulos.
    Peer-to-Peer Techniques for Web Information Retrieval and Filtering.
    PhD thesis, Department of Electronic and Computer Engineering, Technical University of Crete, Greece, July 2006.
    [pdf] [bib]

  4. Christos Tryfonopoulos.
    Agent-Based Textual Information Dissemination: Data Models, Query Languages, Algorithms and Computational Complexity.
    MSc thesis, Department of Electronic and Computer Engineering, Technical University of Crete, Greece, October 2002.
    [pdf] [bib]

  5. Christos Tryfonopoulos and Manolis Koubarakis.
    Selective Dissemination of Information in P2P Systems: Data Models, Query Languages, Algorithms and Computational Complexity.
    Technical Report TR-ISL-02-2003, Department of Electronic and Computer Engineering, Technical University of Crete, 2002.
    [pdf] [bib]

  6. Christos Tryfonopoulos and Paraskevi Raftopoulou.
    Design and Implementation of a Project Management System using Relational Databases.
    Diploma thesis, Department of Computer Science, University of Crete, Greece, 2000.