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Symeon Papadopoulos

Personal

Education

  • 2008 – 2012: PhD candidate, Department of Informatics, Aristotle University of Thessaloniki (AUTH), GR
  • 2007 – 2009: Master in Business Administration, Blekinge Institute of Technology (BTH), SE
  • 2004 – 2006: Professional Doctorate in Engineering, Technical University Eindhoven (TU/e), NL
  • 1999 – 2004: Diploma in Electrical and Computer Engineering, Aristotle University of Thessaloniki (AUTH), GR

Scientific Interest

  • Dynamic community detection in social networks
  • Social media mining and large-scale indexing
  • Community detection in web-induced networks
  • Clustering of multimedia objects (photos, videos) by use of community detection techniques
  • Cluster-based landmark and event detection in user contributed content collections
  • Internet-advertising and Information Retrieval

Employment

  • 2012 – now: Post-doctoral research fellow, Information Technologies Institute (ITI), Thessaloniki, Greece
  • 2006 – now: Research Associate, Informatics and Telematics Institute (ITI), Thessaloniki, Greece
  • 2005 – 2006: Intern Research Engineer, Philips Medical Systems, Best, Netherlands
  • 2004 – 2005: Research and Education Assistant, Technical University Eindhoven, Netherlands

Skills and Experience

  • Programming Languages: Java, Matlab, C/C++, PHP, JavaScript
  • 5 years of experience in: thesis and assignment supervision, teaching
  • 6 years of experience in: research project proposal writing

Awards

  • Best Paper Honorable mention, MMM conference 2013, Huangshan, China
  • Best demo award, ICMR 2012, Hong Kong
  • Best demo award, ICMR 2011, Trento, Italy
  • Scholarship, State Scholarships Foundation of Greece (IKY) for acad. year 2002-2003
  • Award of Excellence, Technical Chamber of Greece for acad. years 2001-2002, 2002-2003, 2003-2004

Publications

Patents

  1. D. Tsatsou, P. Davis, S. Papadopoulos, F. Menemenis, G. Kalfas, I. Kompatsiaris. “Method and system for recommendation of content items”. Publication number: WO2010129165 (A2), Publication date: 11/11/2010
  2. Waddington, S., Bratu, B., Kompatsiaris, I., Menemenis, F., Papadopoulos, S. "Selection of Associated Content for Content Items". Publication number: WO2010033346 (A2), Publication date: 25/03/2010.
  3. Bratu, B., Waddington, S., Kompatsiaris, Y., Menemenis, F., Nidelkou, E., Papadopoulos, S. "Method and apparatus for processing a search query for text content items". Publication number: EP2073131 (A1), Publication date: 24/06/2009.

Journal articles

  1. S. Papadopoulos, Y. Kompatsiaris, A. Vakali, P. Spyridonos. “Community Detection in Social Media”. In Data Mining and Knowledge Discovery 24(3), pp. 515-554 (2012), DOI: 10.1007/s10618-011-0224-z
  2. C. Zigkolis, S. Papadopoulos, G. Filippou, Y. Kompatsiaris, A. Vakali. “Collaborative Event Annotation in Tagged Photo Collections”. In Multimedia Tools and Applications 2012, DOI: 10.1007/s11042-012-1154-5
  3. S. Papadopoulos, C. Zigkolis, Y. Kompatsiaris, A. Vakali. "Cluster-based Landmark and Event Detection on Tagged Photo Collections". In IEEE Multimedia Magazine (accepted for publication, October 2010)
  4. S. Vrochidis, S. Papadopoulos, A. Moumtzidou, P. Sidiropoulos, E. Pianta, I. Kompatsiaris. "Towards Content-based Patent Image Retrieval; A Framework Perspective". In World Patent Information.
  5. Symeon Papadopoulos, Athina Vakali and Yiannis Kompatsiaris (2010) The Dynamics of Content Popularity in Social Media". In International Journal of Data Warehousing and Mining 6(1)
  6. L. Wanner, R. Baeza-Yates, S. Brugmann, J. Codina, B. Diallo, E. Escorsa, M. Giereth, Y. Kompatsiaris, S. Papadopoulos, E. Pianta, G. Piella, I. Puhlmann, G. Rao, M. Rotard, P. Schoester, L. Serafini and V. Zervaki. "Towards content-oriented patent document processing". In World Patent Information, 30(1): 21-33, March 2008.

Book Chapters

  1. S. Diplaris, A. Sonnenbichler, T. Kaczanowski, P. Mylonas, A. Scherp, M. Janik, S. Papadopoulos, M. Ovelgoenne, Y. Kompatsiaris. “Emerging, Collective Intelligence for personal, organisational, and social use”. In book Next Generation Data Technologies for Collective Computational Intelligence, edited by Dr. Nik Bessis and Dr. Fatos Xhafa, in “Studies in Computational Intelligence” book series, Vol. 352, pp. 527-573, Springer (2011)
  2. S. Nikolopoulos, E. Chatzilari, E. Giannakidou, S. Papadopoulos, I. Kompatsiaris, A. Vakali. “Leveraging Massive User Contributions for Knowledge Extraction”. In book Next Generation Data Technologies for Collective Computational Intelligence, Nik Bessis and Fatos Xhafa (Eds.), in “Studies in Computational Intelligence” book series, Vol. 352, pp. 415-443, Springer (2011)
  3. S. Papadopoulos, A. Vakali, Y. Kompatsiaris. "Community Detection in Collaborative Tagging Systems". In Book Community-built Database: Research and Development, Springer (accepted for publication 2010)
  4. M. Giatsoglou, S. Papadopoulos, A. Vakali. "Massive Graph Management for the Web and Web 2.0". In Book New Directions in Web Data Management, Springer (accepted for publication, 2010)
  5. D. Tsatsou, S. Papadopoulos, I. Kompatsiaris, P.C. Davis. "Distributed Technologies for Personalized Advertisement Delivery". In Online Multimedia Advertising: Techniques and Technologies, IGI Global (accepted for publication, 2010)
  6. S. Papadopoulos, Fotis Menemenis, Athena Vakali, Yiannis Kompatsiaris. "Analysis of Content Popularity in Social Bookmarking Systems". In book Evolving Application Domains of Data Warehousing and Mining: Trends and Solutions, edited by Dr. Pedro Furtado, IGI Publishing. (September 2009).

Conference Papers

  1. S. Papadopoulos, C. Sagonas, Y. Kompatsiaris, A. Vakali. “Semi-supervised concept detection by learning the structure of similarity graphs”. Proceedings of the 19th International Conference on Multimedia Modelling (MMM2013), Huangshan, China, January 7-9, 2013 (Best Paper Honorable Mention)
  2. E. Mantziou, G. Petkos, S. Papadopoulos, C. Sagonas, Y. Kompatsiaris. “CERTH's Participation at the Photo Annotation Task of ImageCLEF 2012”. CLEF (Online Working Notes/Labs/Workshop) 2012
  3. S. Papadopoulos, E. Schinas, V. Mezaris, R. Troncy, I. Kompatsiaris. “Social Event Detection at MediaEval 2012: Challenges, Dataset and Evaluation”. In MediaEval 2012
  4. E. Schinas, G. Petkos, S. Papadopoulos, Y. Kompatsiaris. “CERTH @ MediaEval 2012 Social Event Detection Task”. In MediaEval 2012
  5. S. Diplaris, S. Papadopoulos, Y. Kompatsiaris, N. Heise, J. Spangenberg, N. Newman, H. Hacid. “Making Sense of it All: An Attempt to Aid Journalists in Analysing and Filtering User Generated Content”. In Workshop on Mining Social Network Dynamics (MSND 2012) in conjunction with World Wide Web 2012 Conference (WWW 2012), 16 April, Lyon, France
  6. S. Diplaris, S. Papadopoulos, I. Kompatsiaris, A. Goker, A. MacFarlane, J. Spangenberg, H. Hacid, L. Maknavicius, M. Klusch: SocialSensor: sensing user generated input for improved media discovery and experience. WWW (Companion Volume) 2012: 243-246
  7. E. Spyromitros-Xioufis, S. Papadopoulos, I. Kompatsiaris, G. Tsoumakas, I. Vlahavas. An Empirical Study on the Combination of SURF Features with VLAD Vectors for Image Search. In Proceedings of the 13th International Workshop on Image Analysis for Multimedia Interactive Services WIAMIS 2012), Dublin, Ireland, May 2012
  8. S. Papadopoulos, J. Bakalli, Y. Kompatsiaris, E. Schinas. “Cluster-based Photo Browsing and Tagging on the Go”. In Proceedings of ACM International Conference on Multimedia Retrieval (ICMR), Hong Kong, 2012
  9. G. Petkos, S. Papadopoulos, Y. Kompatsiaris. “Social Event Detection using Multimodal Clustering and Integrating Supervisory Signals.” In Proceedings of ACM International Conference on Multimedia Retrieval (ICMR), Hong Kong, 2012
  10. M. Mirkovic, D. Culibrk, S. Papadopoulos, C. Zigkolis, Y. Kompatsiaris, G. McArdle, V. Crnojevic. “A Comparative Study of Spatial, Temporal and Content-based Patterns Emerging in YouTube and Flickr”. In Proceedings of 2011 International Conference on Computational Aspects of Social Network (CASoN 2011), pp. 189-194, IEEE
  11. I. Kompatsiaris, S. Diplaris, S. Papadopoulos. “Extracting Emergent Semantics from Large-Scale User-Generated Content”. ICT Innovations 2011 conference, Skopje, FYROM, 14-16 September 2011
  12. S. Papadopoulos, C. Zigkolis, Y. Kompatsiaris, A. Vakali. “CERTH @ MediaEval 2011 SED Task” In Proceedings of MediaEval 2011 Workshop, Pisa, Italy, 1-2 September 2011
  13. S. Papadopoulos, R. Troncy, V. Mezaris, B. Huet and I. Kompatsiaris. “Social Event Detection at MediaEval 2011: Challenges, Dataset and Evaluation”. In MediaEval 2011 Workshop, September 1-2, 2011, Pisa, Italy
  14. E. Chatzilari, S. Nikolopoulos, S. Papadopoulos, C. Zigkolis, Y. Kompatsiaris. “Semi-supervised object recognition using flickr images”. In Proceedings of 9th International Workshop on Content-Based Multimedia Indexing (CBMI), pp. 229-234, IEEE, 2011
  15. C. Zigkolis, S. Papadopoulos, Y. Kompatsiaris, A. Vakali. “Detecting the long tail of Points of Interest in tagged photo collections.” In Proceedings of 9th International Workshop on Content-Based Multimedia Indexing (CBMI), pp. 235-240, IEEE, 2011
  16. S. Papadopoulos, C. Zigkolis, S. Kapiris, Y. Kompatsiaris, A. Vakali. “City exploration by use of spatio-temporal analysis and clustering of user contributed photos” Demo paper in ICMR 2011. (Best demo award)
  17. S. Papadopoulos, A. Scherp, N. Ireson, I. Tsampoulatidis, Y. Kompatsiaris. "Using Event Representation and Semantic Enrichment for Managing and Reviewing Emergency Incident Logs" In 2nd ACM International Workshop on Events in MultiMedia (Firenze, Italy, October 25, 2010)
  18. S. Papadopoulos, C. Zigkolis, S. Kapiris, Y. Kompatsiaris, A. Vakali. "ClustTour: city exploration by use of hybrid photo clustering". In Proceedings of MM '10, the international Conference on Multimedia (Firenze, Italy, October 25 - 29, 2010), ACM, New York, NY, 1617-1620
  19. S. Papadopoulos, Y. Kompatsiaris, A. Vakali (2010) A Graph-based Clustering Scheme for Identifying Related Tags in Folksonomies. In DaWaK 2010.
  20. S. Papadopoulos, C. Zigkolis, G. Tolias, Y. Kalantidis, P. Mylonas, Y. Kompatsiaris, A. Vakali (2010) Image Clustering through Community Detection on Hybrid Image Similarity Graphs. In ICIP 2010.
  21. S. Papadopoulos, Y. Kompatsiaris, A. Vakali (2009) Leveraging Collective Intelligence through Community Detection in Tag Networks. In Proceedings of CKCaR'09 Workshop on Collective Knowledge Capturing and Representation, Redondo Beach, California, USA (September 1, 2009).
  22. S. Papadopoulos, F. Menemenis, Y. Kompatsiaris, B. Bratu. "Lexical Graphs for Improved Contextual Ad Recommendation". In Proceedings of the 31st European Conference on Information Retrieval (Toulouse, France, April 7 - 9, 2009). ECIR '09.
  23. A. Scherp, F. Schwagereit, N. Ireson, V. Lanfranchi, S. Papadopoulos, A. Kritikos, Y. Kompatsiaris, P. Smrz. "Leveraging Web 2.0 Communities in Professional Organisations". In W3C Workshop on the Future of Social Networking, 15-16 January 2009, Barcelona.
  24. F. Menemenis, S. Papadopoulos, B. Bratu, S. Waddington, and Y. Kompatsiaris. "AQUAM: Automatic Query Formulation Architecture for Mobile Applications". In Proceedings of the 7th international Conference on Mobile and Ubiquitous Multimedia (Umea, Sweden, December 3 - 5, 2008). MUM '08, ACM, NY.
  25. S. Papadopoulos, A. Vakali, I. Kompatsiaris. "Digg it Up! Analyzing Popularity Evolution in a Web 2.0 Setting". In Proceedings of the Workshop on Mining Social Data (MSoDa 2008) at the 18th European Conference on Artificial Intelligence (ECAI 2008), Patras, Greece, July 2008.
  26. J. Codina, E. Pianta, S. Vrochidis, S. Papadopoulos. "Integration of Semantic, Metadata and Image search engines with a text search engine for patent retrieval". In Proceedings of the Workshop on Semantic Search (SemSearch 2008) at the 5th European Semantic Web Conference (ESWC 2008), Tenerife, Spain, June 2008.
  27. M. Giereth, S. Koch, Y. Kompatsiaris, S. Papadopoulos, E. Pianta, L. Serafini, and L. Wanner. "A Modular Framework for Ontology-based Representation of Patent Information". In JURIX 2007: The 20th Anniversary International Conference on Legal Knowledge and Information Systems, Leyden, Netherlands.
  28. S. Papadopoulos, V. Mezaris, I. Kompatsiaris, M. G. Strintzis. "A Region-based Approach to Conceptual Image Classification". In Proceedings of the IEE International Conference on Visual Information Engineering (VIE 2005), Glasgow, UK, April 2005.

Non-academic Interest

  • Running
  • Movies
  • Sailing

Referees

  • Dr. Yiannis Kompatsiaris (Principal Investigator)
    Senior Researcher B’
    Informatics & Telematics Institute
  • Prof. Athena Vakali (PhD supervisor)
    Department of Informatics
    Aristotle University of Thessaloniki


 

Symeon Papadopoulos

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