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VASSILIS CHRISTOPHIDES

51
Documents

Presentation

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

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A Meta-level Analysis of Online Anomaly Detectors

Antonios Ntroumpogiannis , Michail Giannoulis , Nikolaos Myrtakis , Vassilis Christophides , Eric Simon
The VLDB Journal, 2023, ⟨10.1007/s00778-022-00773-x⟩
Journal articles hal-03940376v1
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An Overview of End-to-End Entity Resolution for Big Data

Vassilis Christophides , Vasilis Efthymiou , Themis Palpanas , George Papadakis , Kostas Stefanidis
ACM Computing Surveys, In press
Journal articles hal-02955445v1

A greedy feature selection algorithm for Big Data of high dimensionality

Ioannis Tsamardinos , Giorgos Borboudakis , Pavlos Katsogridakis , Polyvios Pratikakis , Vassilis Christophides
Machine Learning, 2018, ⟨10.1007/s10994-018-5748-7⟩
Journal articles hal-01960888v1

Content-Based Publish/Subscribe System for Web Syndication

Zeinab Hmedeh , Harry Kourdounakis , Vassilis Christophides , Cédric Du Mouza , Michel Scholl
Journal of Computer Science and Technology, 2016, 31, pp.359 - 380. ⟨10.1007/s11390-016-1632-8⟩
Journal articles hal-01411848v1

RSS feeds behavior analysis, structure and vocabulary

Nicolas Travers , Zeinab Hmedeh , Nelly Vouzoukidou , Cédric Du Mouza , Vassilis Christophides
International Journal of web information systems, 2014, 10 (3), pp.291-320. ⟨10.1108/IJWIS-06-2014-0023⟩
Journal articles hal-01062290v1

Optimizing taxonomic semantic web queries using labeling schemes

Vassilis Christophides , G. Karvounarakis , D. Plexousakis , Michel Scholl , S. Tourtounis
Semantic Web – Interoperability, Usability, Applicability, 2004, 1, pp.207-228
Journal articles hal-01125088v1

Querying the semantic Web with RQL

G. Karvounarakis , A. Magganaraki , S. Alexaki , Vassilis Christophides , D. Plexousakis
Computer Networks Journal, 2003, 42, pp.617-640
Journal articles hal-01124786v1
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Scheduling of Continuous Operators for IoT edge Analytics with Time Constraints

Patient Ntumba , Vassilis Christophides , Nikolaos Georgantas
SMARTCOMP 2022 - International Conference on Smart Computing, Jun 2022, Espoo, Finland
Conference papers hal-03701939v1
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Scheduling Continuous Operators for IoT Edge Analytics

Patient Ntumba , Nikolaos Georgantas , Vassilis Christophides
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⟩
Conference papers hal-03208518v2
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FairER: Entity Resolution With Fairness Constraints

Vasilis Efthymiou , Kostas Stefanidis , Evaggelia Pitoura , Vassilis Christophides
30th ACM International Conference on Information & Knowledge Management (CIKM '21), Nov 2021, New York, France. ⟨10.1145/3459637.3482105⟩
Conference papers hal-03608623v1
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A Comparative Evaluation of Anomaly Explanation Algorithms

Nikolaos Myrtakis , Vassilis Christophides , Eric Simon
24th International Conference on Extending Database Technology (EDBT'2021), Mar 2021, Nicosia, Cyprus. ⟨10.5441/002/edbt.2021.10⟩
Conference papers hal-03608624v1
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Efficient Scheduling of Streaming Operators for IoT Edge Analytics

Patient Ntumba , Nikolaos Georgantas , Vassilis Christophides
FMEC 2021 - Sixth International Conference on Fog and Mobile Edge Computing, Dec 2021, Gandia, Spain
Conference papers hal-03413549v1

Implications of the Multi-Modality of User Perceived Page Load Time

Flavia Salutari , Diego Da Hora , Matteo Varvello , Renata Teixeira , Vassilis Christophides
MedComNet 2020 - 18th Mediterranean Communication and Computer Networking Conference, Jun 2020, Arona, Italy. pp.1-8, ⟨10.1109/MedComNet49392.2020.9191615⟩
Conference papers hal-03144918v1
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Detecting Mobile Crowdsensing Context in the Wild

Rachit Agarwal , Shaan Chopra , Vassilis Christophides , Nikolaos Georgantas , Valérie Issarny
20th IEEE International Conference on Mobile Data Management (MDM) 2019, Jun 2019, Hong Kong, Hong Kong SAR China
Conference papers hal-02151434v1

MinoanER: Schema-Agnostic, Non-Iterative, Massively Parallel Resolution of Web Entities

Vasilis Efthymiou , George Papadakis , Kostas Stefanidis , Vassilis Christophides
EDBT/ICDT 2019 Joint Conference, Mar 2019, Lisbon, Portugal
Conference papers hal-01960933v1
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Simplifying Entity Resolution on Web Data with Schema-agnostic, Non-iterative Matching

Vasilis Efthymiou , George Papadakis , Kostas Stefanidis , Vassilis Christophides
ICDE 2018 - 34th IEEE International Conference on Data Engineering, Apr 2018, Paris, France. pp.1-4
Conference papers hal-01718040v1
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Narrowing the gap between QoS metrics and Web QoE using Above-the-fold metrics

Diego da Hora , Alemnew Sheferaw Asrese , Vassilis Christophides , Renata Teixeira , D. Rossi
PAM 2018 - International Conference on Passive and Active Network Measurement, Mar 2018, Berlin, Germany. pp.1-13
Conference papers hal-01677260v1

Matching Web Tables with Knowledge Base Entities: From Entity Lookups to Entity Embeddings

Vassilis Christophides , Vasilis Efthymiou , Oktie Hassanzadeh , Mariano Rodriguez-Muro
ISWC 2017 - 16th International Semantic Web Conference, Oct 2017, Vienna, Austria. pp.260-277, ⟨10.1007/978-3-319-68288-4_16⟩
Conference papers hal-01664023v1
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Web-Scale Blocking, Iterative and Progressive Entity Resolution

Kostas Stefanidis , Vassilis Christophides , Vasilis Efthymiou
ICDE 2017 - 33rd IEEE International Conference on Data Engineering, Apr 2017, San Diego, CA, United States. pp.1-4, ⟨10.1109/ICDE.2017.214⟩
Conference papers hal-01664035v1
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Extracting Usage Patterns of Home IoT Devices

Gevorg Poghosyan , Ioannis Pefkianakis , Pascal Le Guyadec , Vassilis Christophides
ISCC 2017 - 22nd IEEE Symposium on Computers and Communications, Jul 2017, Heraklion, Crete, Greece. pp.1-7, ⟨10.1109/ISCC.2017.8024707⟩
Conference papers hal-01664015v1
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Towards a Causal Analysis of Video QoE from Network and Application QoS

Michalis Katsarakis , Renata Teixeira , Maria Papadopouli , Vassilis Christophides
ACM SIGCOMM Workshop on QoE-based Analysis and Management of Data Communication Networks (Internet-QoE 2016), Aug 2016, Florianopolis, Brazil. ⟨10.1145/2940136.2940142⟩
Conference papers hal-01338726v1

Mining Usage Patterns in Residential Intranet of Things

Vassilis Christophides
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
Conference papers hal-01317634v1
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Mining usage patterns in residential intranet of things

Gevorg Poghosyan , Ioannis Pefkianakis , Pascal Le Guyadec , Vassilis Christophides
The 7th International Conference on Ambient Systems, Networks and Technologies, May 2016, Madrid Spain. pp.6
Conference papers hal-01411676v1
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Big Data Entity Resolution:

Vasilis Efthymiou , Kostas Stefanidis , Vassilis Christophides
2015 IEEE International Conference on Big Data (IEEE BigData 2015), Oct 2015, Santa Clara, CA,, United States. ⟨10.1109/BigData.2015.7363781⟩
Conference papers hal-01199399v1

Querying Temporal Drifts at Multiple Granularities

Sofia Kleisarchaki , Sihem Amer-Yahia , Ahlame Douzal-Chouakria , Vassilis Christophides
CIKM 2015, Oct 2015, Melbourne, Australia
Conference papers hal-01208397v1

Online Detection of Topic Change in Social Posts

Sofia Kleisarchaki , Vassilis Christophides , Sihem Amer-Yahia , Ahlame Douzal-Chouakria
Big'2014, Apr 2014, Seoul, Corée, North Korea. pp.1-4
Conference papers hal-00946969v1
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Entity Resolution in the Web of Data

Kostas Stefanidis , Vasilis Efthymiou , Melanie Herschel , Vassilis Christophides
International World Wide Web Conference (WWW), Apr 2014, Seoul, South Korea
Conference papers hal-00962165v1

Entity Resolution in the Web of Data

Kostas Stefanidis , Vasilis Efthymiou , Melanie Herschel , Vassilis Christophides
International Conference on Information and Knowledge Management (CIKM), Nov 2013, Burlingname, United States
Conference papers hal-00930159v1
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Subscription Indexes for Web Syndication Systems

Zeinab Hmedeh , Harris Kourdounakis , Vassilis Christophides , Cédric Du Mouza , Michel Scholl
EDBT'12, International Conference on Extending Database Technology, Mar 2012, Berlin, Germany. pp.311-322
Conference papers hal-00737202v1
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Indexes Analysis for Matching Subscriptions in RSS feeds

Zeinab Hmedeh , Harris Kourdounakis , Vassilis Christophides , Cédric Du Mouza , Michel Scholl
Bases de Données Avancées, BDA'2012, Oct 2012, Clermont-Ferrand, France. pp.1-20
Conference papers hal-00737232v1

Processing continuous text queries featuring non-homogeneous scoring functions

Nelly Vouzoukidou , Bernd Amann , Vassilis Christophides
21st ACM International Conference on Information and Knowledge Management, Oct 2012, Maui, Hawai, United States. pp.1065-1074 ⟨10.1145/2396761.2398404⟩
Conference papers hal-01359505v1
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Characterizing Web Syndication Behavior and Content

Zeinab Hmedeh , Nelly Vouzoukidou , Nicolas Travers , Vassilis Christophides , Cédric Du Mouza
WISE'11, The 12th International Conference on Web Information System Engineering, Oct 2011, Sydney, Australia. pp.29-42
Conference papers hal-00737239v1
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Everything you would like to know about RSS feeds and you are afraid to ask

Zeinab Hmedeh , Nicolas Travers , Nelly Vouzoukidou , Vassilis Christophides , Cédric Du Mouza
BDA'11, Base de Données Avancées, Oct 2011, Rabat, Morocco. pp.1-20
Conference papers hal-00737243v1

Optimizing large collections of continuous content-based RSS aggregation queries

Jordi Creus , Bernd Amann , Vassilis Christophides , Nicolas Travers , Dan Vodislav
27èmes journées Bases de Données Avancées (BDA 2011), Oct 2011, Rabat, Morocco. pp.1-21
Conference papers hal-00765361v1
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Adaptive Personalisation in Self e-Learning Networks

Kevin Keenoy , Alexandra Poulovassilis , George Papamarkos , Peter Wood , Vassilis Christophides
1st International ELeGI Conference on Advanced Technology for Enhanced Learning, 2005, Vico Equense (Naples), Italy. pp.9
Conference papers hal-00190584v1
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Personalisation Services for Self e-Learning Networks

Kevin Keenoy , Alexandra Poulovassilis , Vassilis Christophides , Philippe Rigaux , George Papamarkos
2nd IST Workshop on Metadata Management in Grid and P2P Systems: Models, Services and Architectures (MMGPS'04), 2004, London, United Kingdom. 14 p
Conference papers hal-00190421v1

On Labeling Schemes for the Semantic Web

Vassilis Christophides , D. Plexousakis , Michel Scholl , S. Tourtounis
WWW2003, Jan 2003, X, France. pp.544-555
Conference papers hal-01124785v1

Managing RDF metadata for Community Webs

S. Alexaki , Vassilis Christophides , G. Karvounarakis , D. Plexousakis , K. Tolle
WCM2000, Jan 2000, X, France
Conference papers hal-01124491v1
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HyperPATH/O2: Integrating Hypermedia Systems with Object-Oriented DatabaseSystems

Bernd Amann , Vassilis Christophides , Michel Scholl
DEXA'93 : 4th International Conference Database and Expert Systems Applications, Sep 1993, Prague, Czech Republic. ⟨10.1007/3-540-57234-1_74⟩
Conference papers hal-01124464v1
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Inferring Context of Mobile Data Crowdsensed in the Wild

Rachit Agarwal , Shaan Chopra , Vassilis Christophides , Nikolaos Georgantas , Valérie Issarny
NetMob 2019 - Conference on the scientific analysis of mobile phone datasets, Jul 2019, Oxford, United Kingdom
Conference poster hal-02132194v1
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A practical method for measuring Web above-the-fold time

Diego da Hora , D. Rossi , Vassilis Christophides , Renata Teixeira
ACM SIGCOMM 2018 Conference, Aug 2018, Budapest, Hungary
Conference poster hal-01960984v1

Entity Resolution in the Web of Data

Vassilis Christophides , Vasilis Efthymiou , Kostas Stefanidis
Morgan & 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⟩
Books hal-01191691v1