Interesting.Stuff

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

journal.publications & book.chapters

  1. 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]

  2. 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]

  3. 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]

  4. 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]

  5. 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]

  6. 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]

  7. 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]

  8. 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. 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]

  2. 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.
    [pdf] [bib]

  3. 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]

  4. 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]

  5. 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]

  6. 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]

  7. 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]

  8. 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]

  9. 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]

  10. 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]

  11. Lefteris Zervakis, Christos Tryfonopoulos, Antonios Papadakis-Pesaresi, Manolis Koubarakis and Spiros Skiadopoulos.
    Full-text Support for 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]

  12. 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]

  13. 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]

  14. 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]

  15. 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]

  16. 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]

  17. 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]

  18. 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]

  19. 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]

  20. 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]

  21. 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]

  22. 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]

  23. 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]

  24. 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]

  25. 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]

  26. 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]

  27. 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]

  28. 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]

  29. 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. 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]

  2. 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]

  3. 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]

  4. 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]

  5. 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]

  6. 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]

  7. 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]

  8. 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]

  9. 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]

  10. 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]

  11. 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]

  12. 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. 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.

  2. 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.

  3. 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]

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

monographs

  1. Christos Tryfonopoulos.
    P2P Information Retrieval and Filtering.
    In AI research in Greece, published by the Hellenic Artificial Intelligence Society, May 2008.
    [pdf] [bib]

  2. Christos Tryfonopoulos.
    P2P Techniques for Web Information Retrieval and Filtering.
    In The Informer, published by the British Computer Society, Information Retrieval Specialist Group, Autumn Edition 2005.
    [pdf] [bib]

theses & technical.reports

  1. 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]

  2. 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]

  3. 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]

  4. 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.