VASSILIS CHRISTOPHIDES
Présentation
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).
Publications
Publications
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Data Glitches Discovery using Influence-based Model ExplanationsKDD '25: The 31st ACM SIGKDD Conference on Knowledge Discovery and Data Mining, Aug 2025, Toronto, Canada. pp.1068-1079, ⟨10.1145/3690624.3709285⟩ |
SeeABLE: Soft Discrepancies and Bounded Contrastive Learning for Exposing Deepfakes.International Conference on Computer Vision (ICCV), Oct 2023, Paris, France |
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Unsupervised Time Series Anomaly Detection: The Road to Effective ExplainabilityConférence francophone sur l'Extraction et la Gestion des Connaissances 24-28 janvier 2022 (Atelier EXPLAIN'AI ), Jan 2022, Blois, France, France |
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Scheduling Continuous Operators for IoT edge Analytics with Time ConstraintsSMARTCOMP 2022 - International Conference on Smart Computing, Jun 2022, Espoo, Finland. pp.78-85, ⟨10.1109/SMARTCOMP55677.2022.00026⟩ |
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Efficient Scheduling of Streaming Operators for IoT Edge AnalyticsFMEC 2021 - Sixth International Conference on Fog and Mobile Edge Computing, Dec 2021, Gandia, Spain. ⟨10.1109/FMEC54266.2021.9732409⟩ |
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Scheduling Continuous Operators for IoT Edge AnalyticsEdgeSys '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⟩ |
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FairER: Entity Resolution With Fairness Constraints30th ACM International Conference on Information & Knowledge Management (CIKM '21), Nov 2021, New York, France. ⟨10.1145/3459637.3482105⟩ |
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A Comparative Evaluation of Anomaly Explanation Algorithms24th International Conference on Extending Database Technology (EDBT'2021), Mar 2021, Nicosia, Cyprus. ⟨10.5441/002/edbt.2021.10⟩ |
Implications of the Multi-Modality of User Perceived Page Load TimeMedComNet 2020 - 18th Mediterranean Communication and Computer Networking Conference, Jun 2020, Arona, Italy. pp.1-8, ⟨10.1109/MedComNet49392.2020.9191615⟩ |
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MinoanER: Schema-Agnostic, Non-Iterative, Massively Parallel Resolution of Web EntitiesEDBT/ICDT 2019 Joint Conference, Mar 2019, Lisbon, Portugal |
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Detecting Mobile Crowdsensing Context in the Wild20th IEEE International Conference on Mobile Data Management (MDM) 2019, Jun 2019, Hong Kong, Hong Kong SAR China |
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Narrowing the gap between QoS metrics and Web QoE using Above-the-fold metricsPAM 2018 - International Conference on Passive and Active Network Measurement, Mar 2018, Berlin, Germany. pp.1-13 |
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Simplifying Entity Resolution on Web Data with Schema-agnostic, Non-iterative MatchingICDE 2018 - 34th IEEE International Conference on Data Engineering, Apr 2018, Paris, France. pp.1-4 |
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Extracting Usage Patterns of Home IoT DevicesISCC 2017 - 22nd IEEE Symposium on Computers and Communications, Jul 2017, Heraklion, Crete, Greece. pp.1-7, ⟨10.1109/ISCC.2017.8024707⟩ |
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Web-Scale Blocking, Iterative and Progressive Entity ResolutionICDE 2017 - 33rd IEEE International Conference on Data Engineering, Apr 2017, San Diego, CA, United States. pp.1-4, ⟨10.1109/ICDE.2017.214⟩ |
Matching Web Tables with Knowledge Base Entities: From Entity Lookups to Entity EmbeddingsISWC 2017 - 16th International Semantic Web Conference, Oct 2017, Vienna, Austria. pp.260-277, ⟨10.1007/978-3-319-68288-4_16⟩ |
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Towards a Causal Analysis of Video QoE from Network and Application QoSACM SIGCOMM Workshop on QoE-based Analysis and Management of Data Communication Networks (Internet-QoE 2016), Aug 2016, Florianopolis, Brazil. ⟨10.1145/2940136.2940142⟩ |
Mining Usage Patterns in Residential Intranet of ThingsThe 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 |
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Mining usage patterns in residential intranet of thingsThe 7th International Conference on Ambient Systems, Networks and Technologies, May 2016, Madrid Spain. pp.6 |
Querying Temporal Drifts at Multiple GranularitiesCIKM 2015, Oct 2015, Melbourne, Australia |
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Big Data Entity Resolution:2015 IEEE International Conference on Big Data (IEEE BigData 2015), Oct 2015, Santa Clara, CA,, United States. ⟨10.1109/BigData.2015.7363781⟩ |
Online Detection of Topic Change in Social PostsBig'2014, Apr 2014, Seoul, Corée, North Korea. pp.1-4 |
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Entity Resolution in the Web of DataInternational World Wide Web Conference (WWW), Apr 2014, Seoul, South Korea |
Entity Resolution in the Web of DataInternational Conference on Information and Knowledge Management (CIKM), Nov 2013, Burlingname, United States |
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Subscription Indexes for Web Syndication SystemsEDBT'12, International Conference on Extending Database Technology, Mar 2012, Berlin, Germany. pp.311-322 |
Processing continuous text queries featuring non-homogeneous scoring functions21st ACM International Conference on Information and Knowledge Management, Oct 2012, Maui, Hawai, United States. pp.1065-1074 ⟨10.1145/2396761.2398404⟩ |
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Indexes Analysis for Matching Subscriptions in RSS feedsBases de Données Avancées, BDA'2012, Oct 2012, Clermont-Ferrand, France. pp.1-20 |
Optimizing large collections of continuous content-based RSS aggregation queries27èmes journées Bases de Données Avancées (BDA 2011), Oct 2011, Rabat, Morocco. pp.1-21 |
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Everything you would like to know about RSS feeds and you are afraid to askBDA'11, Base de Données Avancées, Oct 2011, Rabat, Morocco. pp.1-20 |
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Characterizing Web Syndication Behavior and ContentWISE'11, The 12th International Conference on Web Information System Engineering, Oct 2011, Sydney, Australia. pp.29-42 |
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Adaptive Personalisation in Self e-Learning Networks1st International ELeGI Conference on Advanced Technology for Enhanced Learning, 2005, Vico Equense (Naples), Italy. pp.9 |
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Personalisation Services for Self e-Learning Networks2nd IST Workshop on Metadata Management in Grid and P2P Systems: Models, Services and Architectures (MMGPS'04), 2004, London, United Kingdom. 14 p |
On Labeling Schemes for the Semantic WebWWW2003, Jan 2003, X, France. pp.544-555 |
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Managing RDF metadata for Community WebsWCM2000, Jan 2000, X, France |
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HyperPATH/O2: Integrating Hypermedia Systems with Object-Oriented DatabaseSystemsDEXA'93 : 4th International Conference Database and Expert Systems Applications, Sep 1993, Prague, Czech Republic. ⟨10.1007/3-540-57234-1_74⟩ |
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Inferring Context of Mobile Data Crowdsensed in the WildNetMob 2019 - Conference on the scientific analysis of mobile phone datasets, Jul 2019, Oxford, United Kingdom |
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A practical method for measuring Web above-the-fold timeACM SIGCOMM 2018 Conference, Aug 2018, Budapest, Hungary. 2018 |
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Entity Resolution in the Web of DataMorgan & Claypool, 5 (3), pp.1-122, 2015, Synthesis Lectures on the Semantic Web: Theory and Technology, Ying Ding, Indiana University Paul Groth, Elsevier Labs, ⟨10.2200/S00655ED1V01Y201507WBE013⟩ |
Temporal Analytics in Social MediaEncyclopedia of Database Systems, Springer New York, pp.3909-3912, 2018, ⟨10.1007/978-1-4614-8265-9_80708⟩ |
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RQL: A functional Query language for RQLRQL: A functional Query language for RQL, pp.435-465, 2003 |
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On Predictive Explanation of Data Anomalies2022 |
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Massively-Parallel Feature Selection for Big Data2018 |
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Querying Temporal Drifts at Multiple Granularities2015 |