Paraskevi Raftopoulou

Computer Scientist
 
 
Address Software and Database Systems Laboratory
Department of Computer Science and Technology
University of Peloponnese
University Campus - Karaiskaki str.
22100 Tripoli
Phone +30-2710-372262
Fax +30-2710-372160
E-mail praftop at uop.gr
Url http://www.uop.gr/~praftop/
 
 

EDUCATION
2004-now:
PhD candidate in Computer Engineering
Electronics and Computer Engineering Department, Technical University of Crete, Greece
Supervisor: Euripides G.M. Petrakis (petrakis at intelligence.tuc.gr)
2003:
MSc in Computer Engineering
Electronics and Computer Engineering Department, Technical University of Crete, Greece
Thesis title: "Fair Resource Allocation in P2P Systems: Theoretical and Experimental Results"
Supervisor: Manolis Koubarakis (manolis at intelligence.tuc.gr)
2000:
BSc in Computer Science
Computer Science Department, University of Crete, Greece
Thesis title: "Design and Implementation of a Project Management System using Relational Databases"
Supervisor: Dimitris Plexousakis (dp at ics.forth.gr)
 

EXPERIENCE
August 2008 - now:
Researcher at University of Peloponnese (UOP), Software and Database Systems Laboratory , director Dr. Spiros Skiadopoulos
March 2008 - July 2008:
Visiting researcher at Max-Panck-Institut fur Informatik (MPII), Databases and Information Systems group, director Dr. Gerhard Weikum
June 2000 - July 2008:
Researcher at Technical University of Crete (TUC), Intelligent Systems Laboratory, director Dr. Euripides Petrakis
October 2007 - December 2007:
Visiting researcher at Max-Panck-Institut fur Informatik (MPII), Databases and Information Systems group, director Dr. Gerhard Weikum
September 2000 - August 2007:
Teaching assistant at Technical University of Crete in the following cources
  • Theory of Computation (autumn 2005, autumn 2006)
  • Data Structures (spring 2004, spring 2005, spring 2006, spring 2007)
  • Multimedia Data Management (autumn 2003, autumn 2004)
  • Theory of Computer Languages (spring 2003)
  • Artificial Intelligence (spring 2002, autumn 2002, spring 2001)
  • Compilers (autumn 2001, autumn 2001)
March 2004 - December 2005:
Research in Biopattern Network of Excellence, Technical University of Crete
July 2000 - June 2003:
Research in project DIET (Decentralised Information Ecosystem Technologies), Technical University of Crete
November 1999 - June 2000:
Design and Development of Relational Data Base Systems (RDBMS) in Istos ltd., in Heraklion, Crete
June 1999 - August 1999:
Practical training in Michanotechniki ltd. (IBM business partner and retailer), in Heraklion, Crete
 

RESEARCH INTERESTS
  • Self-organising overlay networks
  • Efficient content sharing in P2P systems
  • Information retrieval, filtering and dissemination over wide-area networks
  • Semantic Web
  • Adaptive systems for information retrieval using reinforcement learning
  • Multi-agent systems
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    PUBLICATIONS
    1. P. Raftopoulou, E. Petrakis, and C. Tryfonopoulos. Rewiring Strategies for Semantic Overlay Networks. Distributed and Parallel DataBases (DAPD), special issue on Data Management in Peer-to-Peer Systems, 26(2-3), p. 181-205, December 2009. [bibtex]
    2. P. Raftopoulou and E. Petrakis. A Measure for Cluster Cohesion in Semantic Overlay Networks. In Proceedings of the 6th International Workshop on Large-Scale Distributed Systems for Information Retrieval (LSDS-IR), Napa Valley, California, October 2008. [pdf] [bibtex]
    3. P. Raftopoulou, E. Petrakis, C. Tryfonopoulos, and G. 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, 14-19 September 2008. [pdf] [slides] [bibtex]
    4. P. Raftopoulou and E. Petrakis.iCluster: a Self-Organizing Overlay Network for P2P Information Retrieval. In Proceedings of 30th European Conference on Information Retrieval (ECIR), 30 March - 3 April, Glasgow, Scotland, 2008. [pdf] [slides] [bibtex]
    5. E. Petrakis, G. Varelas, A. Hliaoutakis, and P. Raftopoulou.X-Similarity: Computing Semantic Similarity between Concepts from Different Ontologies. Journal of Digital Information Management (JDIM), December 2006. [pdf] [bibtex]
    6. P. Raftopoulou, M. Koubarakis, K. Stergiou, and P. Triantafillou. Fair Resource Allocation in a Simple Multi-Agent Setting: Search Algorithms and Experimental Evaluation. International Journal on Artificial Intelligence Tools (IJAIT), 14(6), December 2005. [pdf] [bibtex]
    7. P. Raftopoulou and E. Petrakis. Knowledge Sharing in Multi-Layer P2P Networks. In PreProceedings of IEEE STEP 4th International Workshop on Net-Centric Computing (NCC), 24-25 September, Budapest, Hungary, 2005. [bibtex]
    8. G. Varelas, E. Voutsakis, P. Raftopoulou, E. Petrakis, and E. Milios. Semantic Similarity Methods in WordNet and their Application to Information Retrieval on the Web. In Proceedings of 7th ACM International Workshop on Web Information and Data Management (WIDM), 5 November, Bremen, Germany, 2005. [bibtex]
    9. P. Raftopoulou. Fair Resource Allocation in P2P Systems: Theoretical and Experimental Results. Master of Computer Engineering, Department of Electronic and Computer Engineering, Technical University of Crete, Chania, Greece, June 2003. [pdf.zip] [bibtex]
    10. M. Koubarakis, C. Tryfonopoulos, P. Raftopoulou, and T. Koutris. Data Models and Languages for Agent-Based Textual Information Dissemination. In Proceedings of 6th International Workshop on Cooperative Information Systems (CIA), 18-20 September 2002, Universidad Rey Juan Carlos, Madrid, Spain. [pdf] --- extended version [ps.zip] [bibtex]
    11. M. Koubarakis, T. Koutris, C. Tryfonopoulos, P. Raftopoulou. Information Alert in Distributed Digital Libraries: The Models, Languages and Architecture of DIAS. In Proceedings of 6th European Conference on Research and Advanced Technology for Digital Libraries (ECDL), 16-18 September 2002, Pontifical Gregorian University, Rome, Italy. [pdf] [bibtex]
    12. M. Koubarakis, T. Koutris, P. Raftopoulou, and C. Tryfonopoulos. Efficient Agent-Based Dissemination of Textual Information. In Proceedings of 2nd Hellenic Conference on Artificial Intelligence (SETN), 11 - 12 April 2002, Thessaloniki, Greece. [pdf] [bibtex]
    13. 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. Symposium on Information Agents for E-Commerce, AISB Convention, 21 - 24 March 2001, University of York, United Kingdom. [pdf] [bibtex]
     

    PRESENTATIONS
    September 2008:
    Information Retrieval and Filtering over Self-Organising Digital Libraries, presented at 12th European Conference on Digital Libraries, Arhus, Denmark. [slides]
    December 2007:
    iCluster: a Self-Organizing Overlay Network for P2P Information Retrieval, presented at 30th European Conference on Information Retrieval, Glasgow, Scotland. [slides]
    December 2007:
    Rewiring Strategies for Efficient IR over Semantic Overlays, presented at Databases and Information Systems group, Max-Planck-Institut fur Informatik, Germany.
    June 2007:
    iCluster: a Self-Organising Overlay Network for P2P Information Retrieval, presented at Databases and Information Systems group, Max-Planck-Institut fur Informatik, Germany.
    September 2005:
    Knowledge Sharing in Multi-Layer P2P Networks, presented at STEP 2005 workshop on Net-Centric Computing (NCC'05), Hungary.
    April 2002:
    Agents in Biomedical Applications, presented at Dept. of Medicine, University of Crete, Greece. [slides]
     

    REVIEWS
  • External Reviewer for 4th European Semantic Web Conference (ESWC'07)
  • External Reviewer for 6th International Semantic Web Conference (ISWC'07) and 2nd Asian Semantic Web Conference (ASWC'07)
  • External Reviewer for 18th IEEE International Conference on Tools with Artificial Intelligence (ICTAI'07)
    •
     

    SCHOLARSHIPS & AWARDS
    September 2007 - December 2007:
    Ph.D fellowship from Technical University of Crete that covers the expenses of a research stay in a European/American University/Institute up to 2500 EUR
    November 2002 - November 2005:
    Ph.D fellowship from the program Heraclitus of the Greek Ministry of Education
     

    SEMINARS ATTENDED
    June 2004:
    Department of Electronic and Computer Engineering, Technical University of Crete, Greece - 3rd Seminar in Technologies used for Mining and Managing Knowledge stemming from Multimedia (MultiMine)
    July 2002:
    Onassis Foundation Science Lecture Series - The 2002 Lecture Series in Computer Science, The Data Avalanche: Reducing Information Overload. Lecturers: J. Gray, P. Constantopoulos, S Orphanoudakis, T. Sellis, D. Tsichritzis
    July 2000:
    Department of Computer Science, University of Crete, Greece & Institute of Computer Science, FORTH - Invited Seminar, Planning the Motion of Robots and Molecules: An Algorithmic Introduction. Lecturer: L. Kavraki