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45

CV

I studied Electrical Engineering at the National Technical University of Athens (NTUA) in 1988, I received my DEA in computer science from the University PARIS VI in 1992, and my Ph.D. from the Conservatoire National des Arts et Metiers (CNAM) of Paris, in 1996. I am currently Professor of Computer Science at ENSEA, Cergy. Previously, I have served the Computer Science Department of the University of Crete for 5 years as Associate Professor and 11 years as Full Professor (Professeur grade 1). Between 2019 and 2020, I was fellow in residence (Adjunct Professor) at the Institut d’Études Avancées (IEA), Université CY Cergy Paris. From 2015 to 2019 I have been elected to an advanced research position at INRIA-Paris while from 2013 to 2015 I have worked as a Distinguished Scientist at Technicolor, R&I Center in Paris.
My main research interests span Machine Learning Systems, Data Science and Big Data Computing, Databases and Web Information Systems, as well as Digital Libraries and Scientific Systems. On these topics, I have published 148 articles in leading journals and conferences. My research work was driven by the need to manage, process and analyze post-relational data (semi–or unstructured) in centralized, distributed and streaming settings often in the context of other scientific fields (e.g., Cultural Heritage, Environmental Sciences, Educational Sciences, etc.). My work has received 7000 citations with an h-index 44 according to Google Scholar.
I was a recipient of the 2004 SIGMOD Test of Time Award, and of several best paper awards in ISWC (2003, 2007, 2009). I chaired (General Chair of the EDBT/ICDT Conference in 2014, Area Chair for the “Semi-structured, Web, and Linked Data Management” track in ICDE 2016, Chair of the Web Services Track in SCC 2004, Industrial Track Chair in EDBT 2004) or served on program committees of numerous conferences (VLDB, ICDE, EDBT, WWW, CIKM, etc.) while I have acted as editorial member, or reviewer of several journals (CACM, TODS, TOIS, TOIT, VLDB Journal, TDKE, DPS, etc.). I have also been a keynote or invited speaker in conferences and summer schools (PODS 2003, HDMS 2004, ESWC Summer School 2013, WebST 2016, BDA Summer School 2018).

Journal articles5 documents

  • Ioannis Tsamardinos, Giorgos Borboudakis, Pavlos Katsogridakis, Polyvios Pratikakis, Vassilis Christophides. A greedy feature selection algorithm for Big Data of high dimensionality. Machine Learning, Springer Verlag, 2018, ⟨10.1007/s10994-018-5748-7⟩. ⟨hal-01960888⟩
  • Zeinab Hmedeh, Harry Kourdounakis, Vassilis Christophides, Cédric Du Mouza, Michel Scholl, et al.. Content-Based Publish/Subscribe System for Web Syndication. Journal of Computer Science and Technology, Springer Verlag, 2016, 31, pp.359 - 380. ⟨10.1007/s11390-016-1632-8⟩. ⟨hal-01411848⟩
  • Nicolas Travers, Zeinab Hmedeh, Nelly Vouzoukidou, Cédric Du Mouza, Vassilis Christophides, et al.. RSS feeds behavior analysis, structure and vocabulary. International Journal of web information systems, Emerald, 2014, 10 (3), pp.291-320. ⟨10.1108/IJWIS-06-2014-0023⟩. ⟨hal-01062290⟩
  • Vassilis Christophides, G. Karvounarakis, D. Plexousakis, Michel Scholl, S. Tourtounis. Optimizing taxonomic semantic web queries using labeling schemes. Semantic Web – Interoperability, Usability, Applicability, IOS Press, 2004, 1, pp.207-228. ⟨hal-01125088⟩
  • G. Karvounarakis, A. Magganaraki, S. Alexaki, Vassilis Christophides, D. Plexousakis, et al.. Querying the semantic Web with RQL. Computer Networks Journal, 2003, 42, pp.617-640. ⟨hal-01124786⟩

Conference papers28 documents

  • Patient Ntumba, Nikolaos Georgantas, Vassilis Christophides. Scheduling Continuous Operators for IoT Edge Analytics. EdgeSys '21 - 4th International Workshop on Edge Systems, Analytics and Networking colocated with EuroSys'21, Apr 2021, Online United Kingdom, United Kingdom. pp.55-60, ⟨10.1145/3434770.3459738⟩. ⟨hal-03208518v2⟩
  • Flavia Salutari, Diego Da Hora, Matteo Varvello, Renata Teixeira, Vassilis Christophides, et al.. Implications of the Multi-Modality of User Perceived Page Load Time. MedComNet 2020 - 18th Mediterranean Communication and Computer Networking Conference, Jun 2020, Arona, Italy. pp.1-8, ⟨10.1109/MedComNet49392.2020.9191615⟩. ⟨hal-03144918⟩
  • Vasilis Efthymiou, George Papadakis, Kostas Stefanidis, Vassilis Christophides. MinoanER: Schema-Agnostic, Non-Iterative, Massively Parallel Resolution of Web Entities. EDBT/ICDT 2019 Joint Conference, Mar 2019, Lisbon, Portugal. ⟨hal-01960933⟩
  • Rachit Agarwal, Shaan Chopra, Vassilis Christophides, Nikolaos Georgantas, Valérie Issarny. Detecting Mobile Crowdsensing Context in the Wild. 20th IEEE International Conference on Mobile Data Management (MDM) 2019, Jun 2019, Hong Kong, Hong Kong SAR China. ⟨hal-02151434⟩
  • Vasilis Efthymiou, George Papadakis, Kostas Stefanidis, Vassilis Christophides. Simplifying Entity Resolution on Web Data with Schema-agnostic, Non-iterative Matching. ICDE 2018 - 34th IEEE International Conference on Data Engineering, Apr 2018, Paris, France. pp.1-4. ⟨hal-01718040⟩
  • Diego da Hora, Alemnew Asrese, Vassilis Christophides, Renata Teixeira, Dario Rossi. Narrowing the gap between QoS metrics and Web QoE using Above-the-fold metrics. PAM 2018 - International Conference on Passive and Active Network Measurement, Mar 2018, Berlin, Germany. pp.1-13. ⟨hal-01677260⟩
  • Kostas Stefanidis, Vassilis Christophides, Vasilis Efthymiou. Web-Scale Blocking, Iterative and Progressive Entity Resolution. ICDE 2017 - 33rd IEEE International Conference on Data Engineering, Apr 2017, San Diego, CA, United States. pp.1-4, ⟨10.1109/ICDE.2017.214⟩. ⟨hal-01664035⟩
  • Vassilis Christophides, Vasilis Efthymiou, Oktie Hassanzadeh, Mariano Rodriguez-Muro. Matching Web Tables with Knowledge Base Entities: From Entity Lookups to Entity Embeddings. ISWC 2017 - 16th International Semantic Web Conference, Oct 2017, Vienna, Austria. pp.260-277, ⟨10.1007/978-3-319-68288-4_16⟩. ⟨hal-01664023⟩
  • Gevorg Poghosyan, Ioannis Pefkianakis, Pascal Le Guyadec, Vassilis Christophides. Extracting Usage Patterns of Home IoT Devices. ISCC 2017 - 22nd IEEE Symposium on Computers and Communications, Jul 2017, Heraklion, Crete, Greece. pp.1-7, ⟨10.1109/ISCC.2017.8024707⟩. ⟨hal-01664015⟩
  • Michalis Katsarakis, Renata Teixeira, Maria Papadopouli, Vassilis Christophides. Towards a Causal Analysis of Video QoE from Network and Application QoS. ACM SIGCOMM Workshop on QoE-based Analysis and Management of Data Communication Networks (Internet-QoE 2016), Aug 2016, Florianopolis, Brazil. ⟨10.1145/2940136.2940142⟩. ⟨hal-01338726⟩
  • Vassilis Christophides. Mining Usage Patterns in Residential Intranet of Things. The 7th International Conference on Ambient Systems, Networks and Technologies (ANT 2016) / The 6th International Conference on Sustainable Energy Information Technology (SEIT-2016) / Affiliated Workshops, May 2016, Madrid, Spain. ⟨hal-01317634⟩
  • Gevorg Poghosyan, Ioannis Pefkianakis, Pascal Le Guyadec, Vassilis Christophides. Mining usage patterns in residential intranet of things. The 7th International Conference on Ambient Systems, Networks and Technologies, May 2016, Madrid Spain. pp.6. ⟨hal-01411676⟩
  • Vasilis Efthymiou, Kostas Stefanidis, Vassilis Christophides. Big Data Entity Resolution:: From Highly to Somehow Similar Entity Descriptions in the Web. 2015 IEEE International Conference on Big Data (IEEE BigData 2015), Oct 2015, Santa Clara, CA,, United States. ⟨10.1109/BigData.2015.7363781⟩. ⟨hal-01199399⟩
  • Sofia Kleisarchaki, Sihem Amer-Yahia, Ahlame Douzal-Chouakria, Vassilis Christophides. Querying Temporal Drifts at Multiple Granularities. CIKM 2015, Oct 2015, Melbourne, Australia. ⟨hal-01208397⟩
  • Sofia Kleisarchaki, Vassilis Christophides, Sihem Amer-Yahia, Ahlame Douzal-Chouakria. Online Detection of Topic Change in Social Posts. Big'2014, Apr 2014, Seoul, Corée, North Korea. pp.1-4. ⟨hal-00946969⟩
  • Kostas Stefanidis, Vasilis Efthymiou, Melanie Herschel, Vassilis Christophides. Entity Resolution in the Web of Data. International World Wide Web Conference (WWW), Apr 2014, Seoul, South Korea. ⟨hal-00962165⟩
  • Kostas Stefanidis, Vasilis Efthymiou, Melanie Herschel, Vassilis Christophides. Entity Resolution in the Web of Data. International Conference on Information and Knowledge Management (CIKM), Nov 2013, Burlingname, United States. ⟨hal-00930159⟩
  • Zeinab Hmedeh, Harris Kourdounakis, Vassilis Christophides, Cédric Du Mouza, Michel Scholl, et al.. Indexes Analysis for Matching Subscriptions in RSS feeds. Bases de Données Avancées, BDA'2012, Oct 2012, Clermont-Ferrand, France. pp.1-20. ⟨hal-00737232⟩
  • Zeinab Hmedeh, Harris Kourdounakis, Vassilis Christophides, Cédric Du Mouza, Michel Scholl, et al.. Subscription Indexes for Web Syndication Systems. EDBT'12, International Conference on Extending Database Technology, Mar 2012, Berlin, Germany. pp.311-322. ⟨hal-00737202⟩
  • Nelly Vouzoukidou, Bernd Amann, Vassilis Christophides. Processing continuous text queries featuring non-homogeneous scoring functions. 21st ACM International Conference on Information and Knowledge Management, Oct 2012, Maui, Hawai, United States. pp.1065-1074 ⟨10.1145/2396761.2398404⟩. ⟨hal-01359505⟩
  • Jordi Creus, Bernd Amann, Vassilis Christophides, Nicolas Travers, Dan Vodislav. Optimizing large collections of continuous content-based RSS aggregation queries. 27èmes journées Bases de Données Avancées (BDA 2011), Oct 2011, Rabat, Morocco. pp.1-21. ⟨hal-00765361⟩
  • Zeinab Hmedeh, Nelly Vouzoukidou, Nicolas Travers, Vassilis Christophides, Cédric Du Mouza, et al.. Characterizing Web Syndication Behavior and Content. WISE'11, The 12th International Conference on Web Information System Engineering, Oct 2011, Sydney, Australia. pp.29-42. ⟨hal-00737239⟩
  • Zeinab Hmedeh, Nicolas Travers, Nelly Vouzoukidou, Vassilis Christophides, Cédric Du Mouza, et al.. Everything you would like to know about RSS feeds and you are afraid to ask. BDA'11, Base de Données Avancées, Oct 2011, Rabat, Morocco. pp.1-20. ⟨hal-00737243⟩
  • Kevin Keenoy, Alexandra Poulovassilis, George Papamarkos, Peter Wood, Vassilis Christophides, et al.. Adaptive Personalisation in Self e-Learning Networks. 1st International ELeGI Conference on Advanced Technology for Enhanced Learning, 2005, Vico Equense (Naples), Italy. pp.9. ⟨hal-00190584⟩
  • Kevin Keenoy, Alexandra Poulovassilis, Vassilis Christophides, Philippe Rigaux, George Papamarkos, et al.. Personalisation Services for Self e-Learning Networks. 2nd IST Workshop on Metadata Management in Grid and P2P Systems: Models, Services and Architectures (MMGPS'04), 2004, London, United Kingdom. 14 p. ⟨hal-00190421⟩
  • Vassilis Christophides, D. Plexousakis, Michel Scholl, S. Tourtounis. On Labeling Schemes for the Semantic Web. WWW2003, Jan 2003, X, France. pp.544-555. ⟨hal-01124785⟩
  • S. Alexaki, Vassilis Christophides, G. Karvounarakis, D. Plexousakis, K. Tolle, et al.. Managing RDF metadata for Community Webs. WCM2000, Jan 2000, X, France. ⟨hal-01124491⟩
  • Bernd Amann, Vassilis Christophides, Michel Scholl. HyperPATH/O2: Integrating Hypermedia Systems with Object-Oriented DatabaseSystems. DEXA'93 : 4th International Conference Database and Expert Systems Applications, Sep 1993, Prague, Czech Republic. ⟨10.1007/3-540-57234-1_74⟩. ⟨hal-01124464⟩

Poster communications2 documents

  • Rachit Agarwal, Shaan Chopra, Vassilis Christophides, Nikolaos Georgantas, Valérie Issarny. Inferring Context of Mobile Data Crowdsensed in the Wild. NetMob 2019 - Conference on the scientific analysis of mobile phone datasets, Jul 2019, Oxford, United Kingdom. ⟨hal-02132194⟩
  • Diego da Hora, Dario Rossi, Vassilis Christophides, Renata Teixeira. A practical method for measuring Web above-the-fold time. ACM SIGCOMM 2018 Conference, Aug 2018, Budapest, Hungary. ⟨hal-01960984⟩

Books1 document

Book sections2 documents

  • Sihem Amer-Yahia, Themis Palpanas, Mikalai Tsytsarau, Sofia Kleisarchaki, Ahlame Douzal, et al.. Temporal Analytics in Social Media. Encyclopedia of Database Systems, Springer New York, pp.3909-3912, 2018, ⟨10.1007/978-1-4614-8265-9_80708⟩. ⟨hal-02349260⟩
  • G. Karvounarakis, A. Magkanaraki, S. Alexaki, Vassilis Christophides, D. Plexousakis, et al.. RQL: A functional Query language for RQL. RQL: A functional Query language for RQL, pp.435-465, 2003. ⟨hal-01124850⟩

Directions of work or proceedings1 document

  • Vassilis Christophides, Dan Vodislav. Proceedings of the 2nd International Workshop on Open Data, WOD 2013, Paris, France, June 3, 2013. ACM. 2nd International Workshop on Open Data, WOD 2013, Jun 2013, Paris, France. 2013, 978-1-4503-2020-7. ⟨10.1145/2500410⟩. ⟨hal-01417746⟩

Other publications4 documents

  • Dimitris Andreou, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, Panagiotis Pediaditis, et al.. KP-LAB Knowledge Practices Laboratory -- Specifications and Prototype of the Knowledge Repository (V.3.0) and the Knowledge Mediator (V.3.0). 2009. ⟨hal-00593216⟩
  • Jan Paralic, Karol Furdik, Peter Bednar, Frantisek Babic, Jozeph Wagner, et al.. KP-LAB Knowledge Practices Laboratory -- Specifications for the Knowledge Matchmaker (V.2.0), the Knowledge Synthesizer (V.1.0) and the Analytical and Knowledge Mining Services (V.1.0). 2009. ⟨hal-00593219⟩
  • Pavel Smrz, Vilem Sklenak, Vojtech Svatek, Martin Kavalec, Martin Svihla, et al.. KP-LAB Knowledge Practices Laboratory -- Specification of the SWKM Knowledge Evolution, Recommendation, and Mining services. 2007. ⟨hal-00593214⟩
  • Vassilis Christophides, Dimitris Kotzinos, Yannis Tzitzikas, Nicolas Spyratos, Hanen Belhajfrej, et al.. KP-LAB Knowledge Practices Laboratory -- Specification of the SWKM Architecture (V1.0) and Core Services. 2006. ⟨hal-00593208⟩

Preprints, Working Papers, ...2 documents

  • Ioannis Tsamardinos, Giorgos Borboudakis, Pavlos Katsogridakis, Polyvios Pratikakis, Vassilis Christophides. Massively-Parallel Feature Selection for Big Data. 2018. ⟨hal-01663813⟩
  • Sofia Kleisarchaki, Sihem Amer-Yahia, Ahlame Douzal-Chouakria, Vassilis Christophides. Querying Temporal Drifts at Multiple Granularities. 2015. ⟨hal-01182742⟩