Publications
Dimitris Plexousakis

Nikos Papadakis, Dimitris Plexousakis, Grigoris Antoniou, The ramification problem in temporal databases: concurrence execution, 2010, International Journal of Intelligent Systems 25(4): 287-325, 2010
No Link Available

Theodoros Patkos, Ioannis Chrysakis, Antonis Bikakis, Dimitris Plexousakis, Grigoris Antoniou, A Reasoning Framework for Ambient Intelligence, 2010, In Proceedings of the 6th Hellenic Conference on Artificial Inteligence (SETN 2010)May 2010, Athens, LNAI 6040, 213-222, Springer 2010
Available: pdf file (622 KB)

Nikos Papadakis, P. Petrakis, Dimitris Plexousakis, Haridimos Kondylakis, A Solution to the Ramification Problem Expressed in Temporal Description Logics, 2010, In Proceedings of the International Workshop on New Forms of Reasoning for the Semantic Web: Scalable and Dynamic (at ESWC 2010), May 2010, Heraklion, Greece
No Link Available

Haridimos Kondylakis, Dimitris Plexousakis, Yannis Tzitzikas, Ontology Evolution in Data Integration, 2010, In the poster Session of Extended Semantic Web Conference (ESWC) 2010, Heraklion, Crete
No Link Available

Haridimos Kondylakis, Dimitris Plexousakis, Enabling ontology evolution in data integration, 2010, In Proceedings of the 2010 EDBT/ICDT Workshops, Lausanne, Switzerland, March 22-26, 2010
No Link Available

Chrisostomos Zeginis, Dimitris Plexousakis, Monitoring the QoS of Web Services using SLAs, 2010, Technical Report FORTH/ICS 404, May 2010
Available: pdf file (623 KB)

Ioannis Chrysakis, Constantinos Chalkidis, Dimitris Plexousakis, A Detailed Evaluation of Threshold Algorithms for Answering Top-k queries in Peer-to-Peer Networks, 2010, Technical Report FORTH/ICS 407, July 2010
Available: pdf file (775 KB)

George Baryannis, Dimitris Plexousakis, Automated Web Service Composition: State of the Art and Research Challenges, 2010, Technical Report FORTH/ICS 409, October 2010
Available: pdf file (610 KB)

Chrisostomos Zeginis, Dimitris Plexousakis, Web Service Adaptation: State of the art and Research Challenges, 2010, Technical Report FORTH/ICS 410, October 2010
Available: pdf file (1.533 KB)

Ioannis Chrysakis, Constantinos Chalkidis, Dimitris Plexousakis, Evaluation of Top-k queries in Peer-to-Peer Networks using Threshold Algorithms, 2010, In Proceedings of the 19th International Conference on Information and Knowledge Management (CIKM 2010), pp 1305-1308, Toronto, October 2010
Available: pdf file (262 KB) poster

Haridimos Kondylakis, Dimitris Plexousakis, Yannis Tzitzikas, Ontology Evolution in Data Integration, 2010, In Proceedings of the 4th International Workshop on Ontology Dynamics (IWOD - 2010), International Semantic Wed Conference, Shanghai, China, November 8, 2010. Vol-651, urn:nbn:de:0074-651-1
No Link Available

Chrisostomos Zeginis, Dimitris Plexousakis, Towards realizing WS cross-layer monitoring and adaptation, 2010, PhD Symposium at the 8th IEEE European Conference on Web Services (ECOWS 2010), 3rd of December, 2010, Agia Napa, Cyprus
No Link Available

George Baryannis, Dimitris Plexousakis, Towards Realizing Dynamic QoS-aware Web Service Composition, 2010, PhD Symposium at the 8th IEEE European Conference on Web Services (ECOWS 2010), 3rd of December, 2010, Agia Napa, Cyprus
No Link Available

Haridimos Kondylakis, Dimitris Plexousakis, Yannis Tzitzikas, Ontology Evolution in Data Integration, 2010, In Procceding of the Hellenic Data Management Symposium, June 2010, Agia Napa Cyprus
No Link Available

Haridimos Kondylakis, Dimitris Plexousakis, H. Wache, D. Feldkamp, K. Hinkelmann, A. Bergmayr, Semantic Technology to enable Business and IT alignment, 2010, In Proceedings of the EKAW 2010 Workshop on Open Knowledge Models, October 2010, Lisbon, Portugal
No Link Available

Haridimos Kondylakis, Martin Doerr, Dimitris Plexousakis, Empowering Provenance in Data Integration, 2009, In Proceedings of the 13th East-European Conference on Advances in Databases and Information Systems (ADBIS 2009), LNCS 5739, pp. 270-285, September 7-10, 2009, Riga, Latvia
Available link

Grigoris Antoniou, Dimitris Plexousakis, Semantic Web, 2009, In L. Liu, & R. Tamer (Eds.), Encyclopedia of Database Systems, Springer 2009, 2579-2583
No Link Available

Nikos Papadakis, Dimitris Plexousakis, Grigoris Antoniou, Myron Papadakis, Katerina Boutsika, A Tool for Addressing the Ramification Problem in Temporal Databases, 2009, International Journal On Artificial Intelligence Tools 18,4 (2009): 589-601
No Link Available

Theodoros Patkos, Antonis Bikakis, Grigoris Antoniou, Maria Papadopouli, Dimitris Plexousakis, Design and Challenges of a Semantics-based Framework for Context-Aware Services, 2009, International Journal of Reasoning-based Intelligent Systems (IJRIS), vol.1, nos 1/2 (2009): 18-30
No Link Available

Manolis Kritsotakis, Maria Michou, Emmanouil Nikoloudakis, Antonis Bikakis, Theodoros Patkos, Grigoris Antoniou, Dimitris Plexousakis, Design and Implementation of a Semantics-based Contextual Navigation Guide for Indoor Environments, 2009, Journal of Ambient Intelligence and Smart Environments 1,3 (2009): 261-285
No Link Available

Emmanouil Nikoloudakis, Manolis Kritsotakis, Antonis Bikakis, Theodoros Patkos, Grigoris Antoniou, Dimitris Plexousakis, Exploiting Semantics for Indoor Navigation and User-Tracking, 2009, In Proceedings of the 2009 International Symposium on UbiCom Frontiers - Innovative Research, Systems and Technologies (UFirst 2009). IEEE Press 2009
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Mixed-Integer Programming for QoS-based Web Service Matchmaking, 2009, IEEE Transactions on Services Computing, vol. 2, no. 2, pp. 122-139, 2009.
No Link Available

R. Woitsch, D. Karagiannis, Dimitris Plexousakis, K. Hinkelmann, Business and IT Alignment: the IT Socket, 2009, E&I Journal, vol. 126, no. 7-8, pp. 308-32, 2009
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Requirements for QoS-based Web Service Description and Discovery, 2009, IEEE Transactions on Services Computing, vol. 2, no. 4, pp. 320-337, 2009
No Link Available

Theodoros Patkos, Dimitris Plexousakis, Sensing Inertial and Continuously Changing World Features, 2009, In Proceedings of the 5th IFIP International Conference on Artificial Intelligence Applications and Innovations, pp. 379-388, Thessaloniki, Greece, April 2009
No Link Available

George Baryannis, Dimitris Plexousakis, The Frame Problem in Web Service Specifications, 2009, in Proceedings of the International Workshop on Principles of Engineering Service-Oriented Systems (co-located with the 31st Int. Conference on Software Engineering, May 18-19, Vancouver, Canada, 2009)
No Link Available

Theodoros Patkos, Dimitris Plexousakis, Reasoning with Knowledge, Action and Time in Dynamic, Uncertain Domains, 2009, In Proceedings of the 21st International Joint Conference on Artificial Intelligence, Pasadena, CA., USA, July 2009
No Link Available

M. Treiber, Kyriakos Kritikos, D. Schall, Dimitris Plexousakis, S. Dustdar, Modeling Context-Aware and Socially-Enriched Mashups, 2009, In Proceedings of the 3rd International Workshop on Web APIs and Services Mashups (at OOPSLA ’09), October, 2009
No Link Available

V. Chaudhri, I. Jurisica, Manolis Koubarakis, Dimitris Plexousakis, Theodoros Topaloglou, The KBMS Project and Beyond, 2009, In A.T. Borgida et al. (Eds.): Conceptual Modeling: Foundations and Applications, LNCS 5600, pp. 466–482, 2009
No Link Available

Giorgos Flouris, Mathieu d' Aquin, Grigoris Antoniou, J. Pan, Dimitris Plexousakis, Guest editorial preface: Special issue on ontology dynamics, 2009, Journal of Logic and Computation, 19(5), 717-719.
No Link Available

F. Martinelli, Dimitris Plexousakis, T. Skordas, Engineering Secure Complex Software Systems and Services, 2009, ERCIM News 76, January 2009
No Link Available

Haridimos Kondylakis, Giorgos Flouris, Dimitris Plexousakis, Ontology and Schema Evolution in Data Integration: Review and Assessment, 2009, Robert Meersman, Tharam S. Dillon, Pilar Herrero (Eds.): On the Move to Meaningful Internet Systems: OTM 2009, Confederated International Conferences, CoopIS, DOA, IS, and ODBASE 2009, Vilamoura, Portugal, November 1-6, 2009, Proceedings, Part II. LNCS 5871, Springer 2009, pp.932-947
No Link Available

S. Gritzalis, Dimitris Plexousakis, D. Pnevmatikatos, (Eds.): PCI 2009, 13th panhellenic conference on informatics, 2009, 10-12 september 2009, Corfu, Greece IEEE Computer Society
No Link Available

Giorgos Flouris, Dimitris Manakanatas, Haridimos Kondylakis, Dimitris Plexousakis, Grigoris Antoniou, Ontology change: classification and survey, 2008, Knowledge Engineering Review 23(2): 117-152
No Link Available

Antonis Bikakis, Theodoros Patkos, Grigoris Antoniou, Dimitris Plexousakis, A Survey of Semantics-based Approaches for Context Reasoning in Ambient Intelligence, 2008, In Constructing Ambient Intelligence - AmI-07 Workshops, Communications in Computer and Information Science 11, Springer 2008, 14-23
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, QoS-based Web Service Discovery Algorithm for Over-Constrained QoS Demands, 2008, International Journal of Web Services Practices, vol. 3, no. 1-2, pp. 71-82, 2008
No Link Available

Nikos Papadakis, Dimitris Plexousakis, Grigoris Antoniou, Manolis Daskalakis, Y. Christodoulou, The Ramification Problem in Temporal Databases: a Solution Implemented in SQL, 2008, In Proceedings of the 17th International Symposium on Methodologies for Intelligent Systems (ISMIS’08), LNCS 4994, Springer 2008, 381-388.
No Link Available

Giannis Rousidis, C. Tsagarakis, Dimitris Plexousakis, Yannis Tzitzikas, On a Probabilistic Combination of Prediction Sources, 2008, In Proceedings of the ISMIS’08, Toronto, Canada, pp. 535-544, May 2008.
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Evaluation of QoS-based Web Service Matchmaking Algorithms, 2008, In Proceedings of the 2nd IEEE Congress on Services - Services 2008, Vol. Part I:567-574, IEEE Computer Society, Honolulu, Hawaii, USA, 6-11 July 2008
No Link Available

Theodoros Patkos, Dimitris Plexousakis, A Theory of Action, Knowledge and Time in the Event Calculus, 2008, In Proceedings of the 5th Hellenic Conference on Artificial Intelligence, LNAI 5138, pp. 226-238, Syros, Greece, October 2008. (best paper award)
No Link Available

Maria Michou, Antonis Bikakis, Theodoros Patkos, Grigoris Antoniou, Dimitris Plexousakis, A Semantics-based User Model for the Support of Personalized, Context-Aware Navigational Services, 2008, In Proceedings of the 1st Int. Workshop on Ontologies in Interactive Systems (ONTORACT'2008), IEEE Press 2008
No Link Available

Manolis Kritsotakis, Maria Michou, Emmanouil Nikoloudakis, Antonis Bikakis, Theodoros Patkos, Dimitris Plexousakis, Grigoris Antoniou, C-NGINE: a Contextual Navigation Guide for Indoor Environments, 2008, In Proceedings of the 2nd European Conference on Ambient Intelligence (AmI-08), LNCS 5355, Springer 2008, 258-275
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Enhancing the Web Service Description and Discovery Processes with QoS, 2008, in K. Khan, ed. “Managing Web Services Quality: Measuring Outcomes and Effectiveness”, pp. 114-150, IGI Global Publishers, USA, 2008
No Link Available

S. Gritzalis, Dimitris Plexousakis, D. Pnevmatikatos, (Eds.): Proceedings of the 12th Panhellenic Conference on Informatics, 2008, Samos, August 2008
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, QoS-based Web Service Description and Discovery, 2008, ERCIM News, 72, pp. 43-44, January 2008
No Link Available

Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, H. Markkanen, Dimitris Plexousakis, Nicolas Spyratos, Emergent Knowledge Artifacts for Supporting Trialogical E-Learning, 2007, International Journal of Web-based Learning and Teaching Technologies (IJWLTT), 2(3), pages 19-41, July-September 2007
Available: Abstract (txt file)

Haridimos Kondylakis, Anastasia Analyti, Dimitris Plexousakis, Quete: Ontology-Based Query System for Distributed Sources, 2007, In Proceedings of the 11th East European Conference on Advances in Databases and Information Systems, ADBIS 2007, Varna, Bulgaria, September 29-October 3, 2007. LNCS 4690/2007, pp 359-375.
No Link Available

Manolis Tsiknakis, Pierre Grangeat, Pierre-Alain Binz, George Potamias, Frederique Lisacek, Laurent Gerfault, Caroline Paulus, Dimitris Manakanatas, Vangelis Kritsotakis, Haridimos Kondylakis, Manuel M. Perez, Dimitris Plexousakis, Functional specifications of an integrated proteomics information management and analysis platform, 2007, In 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE EMBC 2007) pp. 6065-6069. August 22-26, 2007, Convention Center, “Cite Internationale”, Lyon, France.
No Link Available

Theodoros Patkos, Antonis Bikakis, Grigoris Antoniou, Maria Papadopouli, Dimitris Plexousakis, A Semantics-based Framework for Context-Aware Services: Lessons Learned and Challenges, 2007, In Proceedings of the 4th International Conference on Ubiquitous Intelligence and Computing (UIC-2007), LNCS 4611, Springer 2007, 839-848
No Link Available

Nikos Papadakis, Grigoris Antoniou, Dimitris Plexousakis, The Ramification Problem in Temporal Databases: Concurrent Execution with Conflicting Constraints, 2007, In Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence (ICTAI'07), 274-278
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Requirements for QoS-based Web Service Description and Discovery, 2007, In Proceedings of the First IEEE International Workshop on Requirements Engineering For Services (REFS 2007) at the 31st Annual International Computer Software and Applications Conference (COMPSAC 2007), 24-27 July 2007, Beijing, China. IEEE Computer Society 2007, ISBN 978-0-7695-2870-0, Vol. 2, p. 467-472
No Link Available

Theodoros Patkos, Antonis Bikakis, Grigoris Antoniou, Maria Papadopouli, Dimitris Plexousakis, Distributed AI for Ambient Intelligence: Issues and Approaches, 2007, In Proceedings of the 2nd European Conference on Ambient Intelligence (AmI-07), Darmstadt, LNCS 4794, Springer 2007, 159-176
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, A Semantic QoS-based Web Service Discovery Algorithm for Over-Constrained Demands, 2007, In Proceedings of the 3rd International Conference on Next Generation Web Service Practices, pp. 49-54. 29-31 October, Seoul, South Korea.
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Semantic QoS-based Web Service Discovery Algorithms, 2007, In Fifth IEEE European Conference on Web Services (ECOWS 2007), Halle (Saale), Germany, 26-28 November 2007.
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, A Semantic QoS-based Web Service Discovery Engine for Over-Constrained QoS Demands, 2007, In Proceedings of the International Workshop on Non Functional Properties and Service Level Agreements in Service Oriented Computing (NFPSLA-SOC'07) at the 5th International Conference on Service Oriented Computing (ICSOC 2007), Vienna, Austria, September 17, 2007.
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, OWL-Q for Semantic QoS-based Web Service Description and Discovery, 2007, In Proceedings of the International Workshop on Service Matchmaking and Resource Retrieval on the Semantic Web, collocated with The International Semantic Web Conference, Busan, South Korea, November 2007
No Link Available

Giorgos Flouris, Z. Huang, J. Pan, Dimitris Plexousakis, H. Wache, Inconsistencies, Negations and Changes in Ontologies, 2007, Extended abstract to appear In Proceedings of the Dutch Conference on AI, 2007.
No Link Available

Zohra Bellahsene, Dimitris Plexousakis, Farouk Toumani, (Eds.): Proceedings of the CAISE*06 Workshop on Data Integration and the Semantic Web DisWeb '06, 2007, Luxemburg, June 5-9, 2006. CEUR Workshop Proceedings 238 CEUR-WS.org 2007
No Link Available

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, Evolving Ontology Evolution, 2006, In Proceedings of the 32nd International Conference on Current Trends in Theory and Practice of Computer Science (SOFSEM 06), January 21-27, 2006, Merin, Czech Republic.LNCS 3831, Springer 2006, 14-29
Available: pdf file (327 kb)

Nikos Papadakis, Grigoris Antoniou, Dimitris Plexousakis, The ramification problem in temporal databases: Changing beliefs about the past, 2006, Journal of Data and Knowledge Engineering, Vol. 59, Issue 2 (November 2006), pp. 397-434
No link available

Giorgos Flouris, Dimitris Plexousakis, Bridging Ontology Evolution and Belief Change, 2006, In Proceedings of the 4th Hellenic Conference on Artificial Intelligence (SETN 2006), LNAI 3955, pp. 486-489, Heraklion, Greece, May 2006
No link available

Dimitris Manakanatas, Dimitris Plexousakis, A Tool for Semi-Automated Semantic Schema Mapping: Design and Implementation, 2006, In proceedings of the International Workshop "Data Integration and the Semantic Web", pp. 290-306, Volume: Proceedings of Workshops and Doctoral Consortium, CAISE'06, Luxembourg, June 5-9, 2006
Available: pdf file (728 kb)

Dimitris Plexousakis, Bits, Atoms and Genes Beyond the Horizon, 2006, ERCIM News No. 64, January 2006
Available: http://www.ercim.org/publication/Ercim_News/enw64/bth0.html

Manos Papagelis, Dimitris Plexousakis, CONFIOUS: conference Management System with Intelligence, Power and Style, 2006, ERCIM News No. 64, January 2006
Available: http://www.ercim.org/publication/Ercim_News/enw64/papagelis.html

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, On Generalizing the AGM Postulates, 2006, In Proceedings of the 3rd European Starting AI Researcher Symposium (STAIRS-06), pp. 132-143, Riva del Garda, Italy. IOS Press 2006
Available: pdf file (346 kb)

Giorgos Flouris, Z. Huang, J. Pan, Dimitris Plexousakis, H. Wache, Inconsistencies, Negations and Changes in Ontologies, 2006, In Proceedings of the 21st National Conference on Artificial Intelligence (AAAI-06), pp. 1295-1300, Boston, MA., USA, July 2006
No link available

Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, H. Markkanen, Dimitris Plexousakis, Nicolas Spyratos, Trialogical E-Learning and Emergent Knowledge Artifacts, 2006, In Proceedings of the 1st European Conference on Technology Enhanced Learning (ECTEL-06), Heraklion , Greece, October 2006, LNCS 4227 pp. 703-708
Available: pdf file (131 kb)

Anastasia Analyti, Haridimos Kondylakis, Dimitris Manakanatas, Manos Kalaitzakis, Dimitris Plexousakis, George Potamias, Integrating Clinical and Genomic Information Through the PrognoChip Mediator, 2006, In Proceedings of the 7th International Symposium on Biological and Medical Data Analysis (ISBMDA-2006), Thessaloniki, Greece, December 2006. LNBI 4345, Springer, pp. 250 – 261
Available: pdf file (463 kb)

Haridimos Kondylakis, Martin Doerr, Dimitris Plexousakis, Mapping Language for Information Integration, 2006, Technical Report ICS-FORTH/385, December 2006
Available: pdf file (163 kb)

Ioannis Chrysakis, Dimitris Plexousakis, Semantic Query Routing and Distributed Top-k Query Processing in Peer-to-Peer Networks, 2006, Technical Report ICS-FORTH/TR-387, December 2006
Available: pdf file (426 kb)

Grigoris Antoniou, George Potamias, Costas Spyropoulos, Dimitris Plexousakis, (Eds.): Advances in Artificial Intelligence, 2006, 4th Helenic Conference on AI, SETN 2006, Heraklion, Crete, Greece, May 18-20, 2006, Proceedings. LNCS 3955, Springer 2006, ISBN 3-540-34117-X
No Link Available

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, A Classification of Ontology Change, 2006, In Proceedings of the 3rd Italian Semantic Web Workshop, Semantic Web Applications and Perspectives (SWAP-06)
Available: [Abstract (txt file)][Full text (pdf file)][Full poster (ppt file)]

Yannis Tzitzikas, Vassilis Christophides, Giorgos Flouris, Dimitris Kotzinos, H. Markkanen, Dimitris Plexousakis, Emergent Knowledge Artifacts for Supporting Trialogical E-Learning, 2006, In Proceedings of the 1st International Workshop on Building Technology Enhanced Learning solutions for Communities of Practice, TEL-CoPS’2006, Heraklion, October 2006
No Link Available

T. Furche, B. Linse, F. Bry, Dimitris Plexousakis, G. Gottlob, RDF Querying: Language Constructs and Evaluation Methods Compared, 2006, In P. Barahona, F. Bry, E.Franconi, N. Henze, U. Sattler (eds.) "ReasoningWeb" Second International Summer School 2006, Lisbon, Portugal, September 4-8, 2006, Tutorial Lectures, pp. 1-52, LNCS 4126, Springer-Verlag, 2006
No Link Available

Antonis Bikakis, Theodoros Patkos, Grigoris Antoniou, Maria Papadopouli, Dimitris Plexousakis, A Semantic-based Framework for Context-Aware Pedestrian Guiding Services, 2006, In Proceedings of the Second International Workshop on Semantic Web Technology For Ubiquitous and Mobile Applications (SWUMA'06), pp. 7-11, August 2006, Riva del Garda, Italy (collocated with ECAI'06)
No Link Available

Kyriakos Kritikos, Dimitris Plexousakis, Semantic QoS Metric Matching, 2006, In Proceedings of the 4th IEEE European Conference on Web Services (ECOWS’06), pp. 265-274, Zurich, Switzerland, December 2006
No Link Available

Vassiliki Alevizou, Dimitris Plexousakis, Enhanced Specifications for Web Service Composition, 2006, In Proceedings of the 4th IEEE European Conference on Web Services (ECOWS’06), pp. 223-232, Zurich, Switzerland, December 2006
No Link Available

Vassiliki Alevizou, Dimitris Plexousakis, Enhanced Specifications for Web Service Composition, 2006, Technical Report FORTH/ICS/TR-374, 2006
No Link Available

Dimitris Plexousakis, RDF Querying: Language Constructs and Evaluation Methods Compared, 2006, Invited lecture at Reasoning Web Summer School, Lisbon, Portugal, September, 2006
No Link Available

Dimitris Plexousakis, Evolving Ontology Evolution, 2006, Invited Talk in 32nd International Conference on Current Trends and Practice in Computer Science (SOFSEM 2006), Prague, Czech Republic, Janurary 2006
No Link Available

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, Updating Description Logic using the AGM Theory, 2005, In Proceedings of the 7th International Symposium on Logical Formalizations of Commonsense Reasoning, May 22-24, Corfu, Greece
Available: pdf file (267 Kb)

Theodoros Patkos, Dimitris Plexousakis, A Semantic Marketplace of Peers Hosting Negotiating Intelligent Agents, 2005, in Proceedings of the CAiSE Forum, Porto, Portugal, 2005. ISBN 972-752-078-2, pp. 3-8
Available: pdf file (130 Kb)

Manos Papagelis, Giannis Rousidis, Dimitris Plexousakis, E. Theoharopoulos, Incremental Collaborative Filtering for Highly-Scalable Recommendation Algorithms, 2005, In Proceedings of the the International Symposium on Methodologies for Intelligent Systems (ISMIS), Saratoga Springs, NY. LNAI 3488, pp. 553 – 561, 2005.
Available: pdf file (120 Kb)

Manos Papagelis, Dimitris Plexousakis, Themistoklis Kutsuras, Alleviating the Sparsity Problem of Collaborative Filtering using Trust Inferences, 2005, In Proceedings of the 3rd International Conference on Trust Management (I-Trust), Paris, France, May 2005.LNCS 3477, pp. 224 – 239, 2005
Available: pdf file (284 Kb)

Grigoris Antoniou, Vassilis Christophides, Dimitris Plexousakis, Semantic Web Fundamentals, 2005, In Encyclopedia of Information Science and Technology, (5 Volumes) Idea Group 2005, ISBN 1-59140-553-X (pp. 2464-2468)
No Link Available

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, On Applying the AGM theory to DLs and OWL, 2005, In Proceedings of the 4th International Semantic Web Conference (ISWC-05), 6-10 November 2005, Galway, Ireland. LNCS 3729 Springer 2005, 216-231
No link available

Giorgos Flouris, Dimitris Plexousakis, Handling Ontology Change: Survey and Proposal for a Future Research Direction, 2005, Technical Report FORTH-ICS/TR-362, September 2005
Available: pdf file (998 kb)

George Potamias, Anastasia Analyti, Dimitris Kafetzopoulos, Maria Kafousi, Thanassis Margaritis, Dimitris Plexousakis, Panagiota Poirazi, Martin Reczko, Yiannis Tollis, Elias Sanidas, Efstathios Stathopoulos, Manolis Tsiknakis, Stamatis Vassilaros, Breast Cancer and Biomedical Informatics: The PrognoChip Project, 2005, In Proceedings of the 17th IMACS World Congress Scientific Computation, Applied Mathematics and Simulation Paris, France, 2005, ISBN 2-915913-02-1
Available: pdf file (290 kb)

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, Ontology Evolution Using Belief Change and the AGM Theory, 2005, Poster session of the 4th International Semantic Web Conference (ISWC-05), 6-10 November 2005, Galway, Ireland
Available: ppt file (335 kb)

Manos Papagelis, Dimitris Plexousakis, Qualitative Analysis of User-based and Item-based Pre-diction Algorithms for Recommendation Agents, 2005, Journal of Engineering Applications of Artificial Intelligence, 18, pp. 781-789
Available: pdf file (342 kb)

Manos Papagelis, Dimitris Plexousakis, Panagiotis Nikolaou, CONFIOUS: Managing the Electronic Submission and Reviewing Process of Scientific Conferences, 2005, in Proceedings of the 6th International Conference on Web Information Systems Engineering (WISE’05), New York, NY., USA, November, 2005. LNCS 3806, pp. 711 – 720, 2005.
Available: pdf file (233 kb)

Theodoros Patkos, Dimitris Plexousakis, A Semantic Marketplace of Negotiating Agents, 2005, In Proceedings of the International Workshop on Agents and Peer-to-Peer Computing (AP2PC’05), Utrecht, Netherlands. Springer, LNAI 4118, 2006, pp. 94-105
No link available

Sheila A. McIlraith, Dimitris Plexousakis, Web Semantics: Science, Services and Agents on the World Wide Web - Selected papers from the 3rd International Conference on the Semantic Web on Journal of Web Semantics, 2005, Volume 3, Issues 2-3, October 2005, Pages 77-78
No Link Available

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, Updating DLs Using the AGM Theory: A Preliminary Study, 2005, In Proceedings of the International Workshop on Description Logics (DL’05), Edinburgh, U.K., July 26-28, 2005
Available: pdf file (106 kb)

Aimilia Magkanaraki, Val Tannen, Vassilis Christophides, Dimitris Plexousakis, Viewing the Semantic Web Through RVL Lenses, 2004, International Journal of Web Semantics: Science, Services and Agents on the World Wide Web, Vol. 1(4), 2004, pp. 359-375
Available: pdf file (399 KB)

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, Generalizing the AGM Postulates: Preliminary Results and Applications, 2004, In Proceedings of the 10th International Workshop on Non-Monotonic Reasoning 2004 (NMR-04), pp. 171-179. June 6-8, 2004, Westin Whistler Resort and Spa, Whistler BC, Canada.
Available: pdf file (374 KB)

Grigoris Karvounarakis, Aimilia Magkanaraki, Sofia Alexaki, Vassilis Christophides, Dimitris Plexousakis, K. Tolle, RQL: A Functional Query Language for RDF, 2004, In P.M.D.Gray, L.Kerschberg, P.J.H.King, A.Poulovassilis (eds.), The Functional Approach to Data Management: Modelling, Analyzing and Integrating Heterogeneous Data, LNCS Series, Springer-Verlag, pp.435-465
Available: pdf file (536 KB)

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, AGM Postulates in Arbitrary Logics: Initial Results and Applications, 2004, Technical Report FORTH-ICS/TR-336, April 2004.
Available: pdf file (994 Kb)

George Potamias, Anastasia Analyti, Dimitris Kafetzopoulos, Manolis Tsiknakis, Dimitris Plexousakis, Panagiota Poirazi, Martin Reczko, Yiannis Tollis, Elias Sanidas, Efstathios Stathopoulos, Stamatis Vassilaros, Breast cancer, microarrays and biomedical informatics: The Prognochip Project, 2004, In Proceedings of 1st International Advanced Research Workshop on In Silico Oncology: Advances and Challenges (1ST IARWISO), Sparta, Greece, September 2004
Available: pdf file (80 Kb)

Martin Doerr, Dimitris Plexousakis, Katerina Kopaka, Chrysoula Bekiari, Supporting Chronological Reasoning in Archaeology, 2004, In Proceedings of the International Conference on Computer Applications and Quantitative Methods in Archaeology, CAA 2004, 13-17 April, 2004, Prato, Italy
Available: pdf file (267 Kb)

Vassilis Christophides, Grigoris Karvounarakis, Dimitris Plexousakis, M. Scholl, Sotiris Tourtounis, Optimizing taxonomic Semantic Web Queries using Labeling Schemes, 2004, International Journal of Web Semantics: Science, Services and Agents on the World Wide Web, Vol. 1(2), 2004, pp. 207-228
Available: pdf file (430 Kb)

Manos Papagelis, Dimitris Plexousakis, Giannis Rousidis, E. Theoharopoulos, Qualitative Analysis for User-based and Item-based Prediction Algorithms for Recommendation Systems, 2004, In Proceedings of the 3rd Hellenic Data Management Symposium, pp. 81-90
Available: pdf file (164 Kb)

Manos Papagelis, Dimitris Plexousakis, Qualitative Analysis for User-based and Item-based Prediction Algorithms for Recommendation Systems, 2004, In Proceedings of the 8th International Workshop on Cooperative Information Agents, Erfurt, Germany, 2004, LNCS 3191, 152-166
Available: pdf file (127 Kb)

Elisa Bertino, Stavros Christodoulakis, Dimitris Plexousakis, Vassilis Christophides, Manolis Koubarakis, K. Bohm, Elena Ferrari, (Eds.): Advances in Database Technology - EDBT 2004, 2004, Proceedings of the 9th International Conference on Extending Database Technology, Heraklion, Crete, Greece, March 14-18, 2004. LNCS 2992 Springer 2004, ISBN 3-540-21200-0
No Link Available

Dimitris Plexousakis, Querying and Viewing the Semantic Web: An RDF-Based Perspective, 2004, In Peter Van Emde Boas et al. eds. SOFSEM 2004: Theory and Practice of Computer Science, 30th Conference on Current Trends in Theory and Practice of Computer Science Merin, Czech Republic, January 24-30, 2004 Proceedings. LNCS 2932, pp. 60-61, 2004
No Link Available

Sheila A. McIlraith, Dimitris Plexousakis, Frank van Harmelen, (Eds.): The Semantic Web - ISWC 2004, 2004, Third International Semantic Web Conference,Hiroshima, Japan, November 7-11, 2004. Proceedings. LNCS 3298 Springer 2004, ISBN 3-540-23798-4
No Link Available

Dimitris Plexousakis, Knowledge Management on the Semantic Web, 2004, International Conference on Practical Aspects of Knowledge Management (PAKM04), Vienna, Austria, December 2004
No Link Available

Nikos Papadakis, Dimitris Plexousakis, Addressing the Ramification Problem in a Temporal Context: the Case of Concurrent Actions, 2003, In Proceedings of the 15th IEEE International Conference on Tools with Artificial Intelligence (ICTAI03), pp. 545-549, Sacramento, California, Nov. 3-5 (2003)
Available: ps file (151 KB)

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, On a Unifying Framework for Comparing Knowledge Representation Schemes, 2003, In Proceedings of the 10th International Workshop on Knowledge Representation meets Databases (KRDB'03), CEUR Workshop Proceedings vol. 7, pp. 75-86
Available: pdf file (134 KB)

I. Katzagiannaki, Dimitris Plexousakis, Information Dissemination based on Semantic Relations, 2003, In Proceedings of the CAiSE Forum 2003 (short papers), pp. 245-248, Klagenfurt/Velden, Austria, June 16-20 (2003).
Available: pdf file (171 KB)

Manos Papagelis, Dimitris Plexousakis, Recommendation-based Discovery of Dynamic Virtual Communities, 2003, In Proeedings of the CAiSE Forum 2003 (short papers), pp. 197-200, Klagenfurt/Velden, Austria, June 16-20 (2003).
Available: pdf file (672 KB)

Kaiti Houstis, Spyros Lalis, Vassilis Christophides, Dimitris Plexousakis, E. Vavalis, M. Pitikakis, Kyriakos Kritikos, A. Smardas, A Data, Computation and Knowledge Grid: the case of the ARION system, 2003, In Proceedings of the 5th International Conference on Enterprise Information Systems (ICEIS2003), pp.359-365, Angers, France, April 23-26 , 2003.
Available: pdf file (276 KB)

Nikos Papadakis, Dimitris Plexousakis, Actions with Duration and Constraints: the Ramification Problem in Temporal Databases, 2003, International Journal on Artificial Intelligence Tools, 12 (3): 315-353, Special Issue on Selected Papers from the 2002 IEEE International Conference on Tools with Artificial Intelligence, pp. 315-353
Available: ps file (309 KB)

Grigoris Karvounarakis, Aimilia Magkanaraki, Sofia Alexaki, Vassilis Christophides, Dimitris Plexousakis, M. Scholl, K. Tolle, Querying the Semantic Web with RQL, 2003, Computer Networks and ISDN Systems Journal Vol. 42(5), August 2003, pp. 617-640. Elsevier Science
Available: pdf file (491 KB)

Giorgos Flouris, Dimitris Plexousakis, On the Use of Matrices for Belief Revision, 2003, In Yannis Manolopoulos, Skevos Evripidou, Antonis C. Kakas (Eds.): Advances in Informatics, 8th Panhellenic Conference on Informatics, PCI 2001. Nicosia, Cyprus, November 2001, Revised Selected Papers. LNCS 2563 Springer 2003, ISBN 3-540-07544-5
Available: pdf file (213 Kb)

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou, Describing Knowledge Representation Schemes: a Formal Account, 2003, Technical Report FORTH-ICS/TR-320, April 2003.
Available: pdf file (1.6 MB)

Vassilis Christophides, Grigoris Karvounarakis, Ioanna Koffina, George Kokkinidis, Aimilia Magkanaraki, Dimitris Plexousakis, George Serfiotis, Val Tannen, The ICS-FORTH SWIM: A Powerful Semantic Web Integration Middleware, 2003, In Proceedings of the International Workshop on the Semantic Web and Databases, Co-located with VLDB 2003 Conference, Berlin, Germany, September 7-8, 2003
Available: pdf file (327 kb)

Vassilis Christophides, Dimitris Plexousakis, M. Scholl, Val Tannen, The Semantic Web: Myths and Reality, 2003, The Onassis Foundation Lectures Series in Computer Science (2003): Internet and Web: Crawling the Algorithmic Foundations
Available: pdf file (3,825 kb)

Vassilis Christophides, Grigoris Karvounarakis, Aimilia Magkanaraki, Dimitris Plexousakis, Val Tannen, The ICS-FORTH Semantic Web Integration Middleware (SWIM), 2003, IEEE Data Engineering Bulletin, 26 (4), pp.11-18, 2003
No Link Available

Aimilia Magkanaraki, Val Tannen, Vassilis Christophides, Dimitris Plexousakis, Viewing the Semantic Web through RVL Lenses, 2003, In Proceedings of the 2nd International Conference on the Semantic Web (ISWC’03), pp. 96-112, LNCS 2870, Sanibel Island, Florida, October 2003 (best paper award)
No Link Available

Vassilis Christophides, Dimitris Plexousakis, M. Scholl, Sotiris Tourtounis, Optimizing Semantic Web Queries using Labeling Schemes, 2003, In Proceedings of the 2nd Hellenic Data Management Symposium, Athens, Greece, September 2003
No Link Available

Vassilis Christophides, Dimitris Plexousakis, M. Scholl, Sotiris Tourtounis, On Labeling Schemes for the Semantic Web, 2003, In Proceedings of the International Conference on the World-Wide Web (WWW’03), pp. 544-555, Budapest, Hungary, May 2003
No Link Available

Aimilia Magkanaraki, Sofia Alexaki, Vassilis Christophides, Dimitris Plexousakis, Benchmarking RDF Schemas for the Semantic Web, 2002, In Proceedings of the 1st International Conference on the Semantic Web (ISWC'02), Sardinia, Italy, June 9-12, 2002. pp. 132-146
Available: pdf file (590 KB)

Nikos Papadopoulos, Dimitris Plexousakis, The Role of Semantic Relevance in Dynamic User Community Management and the Formulation of Recommendations, 2002, In Proceedings of the 14th International Conference on Advanced Information Systems Engineering, (XAISE'02), pp. 200-215, Toronto, Canada, May 2002.
Available: pdf file (180 KB)

Grigoris Karvounarakis, Sofia Alexaki, Vassilis Christophides, Dimitris Plexousakis, M. Scholl, RQL: A Declarative Query Language for RDF, 2002, In Proceedings of the 11th International Conference on the World Wide Web (WWW'02), Honolulu, Hawaii, USA, May 7-11, 2002. pp. 592-603
Available: pdf file (308 Kb)

Nikos Papadakis, Dimitris Plexousakis, The Ramification and Qualification Problems in Temporal Databases, 2002, In Proceedings of the 2nd Hellenic Conference on Artificial Intelligence: Methods and Applications of Artificial Intelligence, Thessaloniki, Greece, April, 2002. LNCS 2308, Springer 2002, pp. 18-29
Available: pdf file (184 KB), compressed ps file (60 KB)

Kaiti Houstis, Spyros Lalis, Vassilis Christophides, Dimitris Plexousakis, E. Vavalis, M. Pitikakis, Kyriakos Kritikos, A. Smardas, Haralampos Gkikas, A Service Infrastructure for E-Science: the case of the ARION System, 2002, In Proceedings of the International Workshop on E-Services, E-Business, and the Semantic Web: Foundations, Models, Architecture, Engineering and Applications. In conjunction with CAiSE'02, Toronto, Ontario, Canada, May 27-28, 2002
Available: pdf file (101 KB)

Sofia Alexaki, Nikos Athanasis, Vassilis Christophides, Grigoris Karvounarakis, Aimilia Magkanaraki, Dimitris Plexousakis, K. Tolle, The ICS-FORTH RDFSuite: High-level Scalable Tools for the Semantic Web, 2002, Poster Proceedings of the 11th International Conference on the World-Wide Web (WWW’02), Hawaii, 2002
Available: pdf file (115 KB)

Aimilia Magkanaraki, Grigoris Karvounarakis, Vassilis Christophides, Dimitris Plexousakis, T. Anh, Ontology Storage and Querying, 2002, Technical Report No 308, April 2002
Available: pdf file (1.655 KB)

Nikos Papadakis, Dimitris Plexousakis, Actions with Duration and Constraints: the Ramification Problem in Temporal Databases, 2002, In Proceedings of the 14th IEEE International Conference on Tools with Artificial Intelligence, Washington D.C., pp. 83-90, November 2002
No Link Available

Sofia Alexaki, Nikos Athanasis, Vassilis Christophides, Grigoris Karvounarakis, Aimilia Magkanaraki, Dimitris Plexousakis, K. Tolle, The ICS-FORTH RDFSuite: High-level Scalable Tools for the Semantic Web, 2002, ERCIM News, no. 51 Special Issue on the Semantic Web, October 2002
No Link Available

Dimitris Plexousakis, Querying the Semantic Web, 2002, EU-NSF Workshop on Database and Information Systems Research for Semantic Web and Enterprises, Amicalola Falls, Georgia, April 3-5, 2002 (not attended)
No Link Available

Martin Doerr, Dimitris Plexousakis, Chrysoula Bekiari, A Metamodel for Part-Whole Relationships for Reasoning on Missing Parts and Reconstruction, 2001, In Hideko S.Kunii,Sushil Jajodia, Arne Solvberg, (eds.), “Conceptual Modeling – ER 2001, 20th International Conference on Conceptual Modeling, Yokohama, Japan, November 2001”, Springer Verlag, Berlin, 2001, pp. 412-425, ISBN 3-540-42866-6
Available: pdf file (368 KB), compressed ps file (1,3 MB)

Grigoris Karvounarakis, Vassilis Christophides, Dimitris Plexousakis, Sofia Alexaki, Querying RDF Descriptions for Community Web Portals, 2001, In Proceedings of the 17iemes Journees Bases de Donnees Avancees (BDA'01), pp. 133-144, Agadir, Maroc, 29 Octobre - 2 Novembre, 2001.
Available: pdf file (146 Kb)

Sofia Alexaki, Vassilis Christophides, Grigoris Karvounarakis, Dimitris Plexousakis, K. Tolle, On Storing Voluminous RDF Descriptions: The case of Web Portal Catalogs, 2001, In Proceedings of the 4th International Workshop on the Web and Databases (WebDB2001) in conjunction with ACM SIGMOD'01 Conference, Santa Barbara California USA, May 24-25, 2001.
Available: pdf file (245 KB), compressed ps file (100 KB)

Sofia Alexaki, Vassilis Christophides, Grigoris Karvounarakis, Dimitris Plexousakis, K. Tolle, The ICS-FORTH RDF Suite: Managing Voluminous RDF Description Bases, 2001, In Proceedings of the 2nd International Workshop on the Semantic Web (SemWeb'01) in conjunction with Tenth International World Wide Web Conference (WWW'10), pp. 1-13, Hong-Kong, May 1st, 2001.
Available: pdf file (547 KB), compressed ps file (234 KB)

Grigoris Karvounarakis, Vassilis Christophides, Dimitris Plexousakis, RQL: A Declarative Query Language for RDF, 2001, D-Lib Magazine, Vol. 7, no. 12, December 2001.
Available: pdf file (27 KB), compressed ps file (49 KB)

Panos Constantopoulos, Vassilis Christophides, Dimitris Plexousakis, Semantic Web Workshop: Models, Architecture and Management, 2001, SIGMOD Record, 30(3), 96-100, 2001
Available: pdf file (89 KB), compressed ps file (155 KB)

Giorgos Flouris, Dimitris Plexousakis, Belief Revision using Table Transformation, 2001, Technical Report FORTH-ICS/TR-290, July 2001.
Available: pdf file (1.2 MB)

Panos Constantopoulos, Vassilis Christophides, Dimitris Plexousakis, Conference review: Semantic Web Workshop: Models, Architecture and Management, 2001, Intelligence Magazine, 12(2), 39-44
Available: pdf file (89 KB), compressed ps file

Dimitris Plexousakis, Reasoning about Database Dynamics in the Situation Calculus, 2001, 3rd Panhellenic Symposium on Logic, Anogia, Greece, July 2001
No Link Available

Dimitris Plexousakis, Thematic Web Portals: the Case of Science and Technology Museums, 2001, Network on Cultural Informatics, Athens, Greece, June 2001
No Link Available

Dimitris Plexousakis, From Digital Libraries to Web Portals, 2001, Digital Libraries Workshop, University of Crete, May 2001
No Link Available

Vassilis Christophides, Dimitris Plexousakis, Database Technology for the Semantic Web, 2001, In NSF-EU Strategic Workshop on the Semantic Web (SWSW), October 2001, Nice, France, INRIA Sophia-Antipolis
No Link Available

Vassilis Christophides, Dimitris Plexousakis, Grigoris Karvounarakis, Sofia Alexaki, Declarative Languages for Querying Portal Catalogs, 2000, In Proceedings of the 1st "DELOS" Workshop on "Information Seeking, Searching and Querying in Digital Libraries", Zurich, Switzerland, December 11-12, 2000.
Available: pdf file (171 KB)

Sofia Alexaki, Vassilis Christophides, Grigoris Karvounarakis, Dimitris Plexousakis, K. Tolle, B. Amann, Irini Fundulaki, M. Scholl, A. M. Vercoustre, Managing RDF Metadata for Community Webs, 2000, In Proceedings of the 2nd International Workshop on The World Wide Web and Conceptual Modelling (WCM'2000) - ER Workshops, Salt Lake City, Utah US, October 2000, pp. 140-151.
Available: pdf file (235 KB), compressed ps file (87 KB)

Grigoris Karvounarakis, Vassilis Christophides, Dimitris Plexousakis, Querying Semistructured (Meta) Data and Schemas on the Web: The case of RDF & RDFS, 2000, Technical Report FORTH-ICS/TR-269, February 2000.
Available: pdf file (397 KB), compressed ps file (155 KB)

Panos Constantopoulos, Vassilis Christophides, Dimitris Plexousakis, (Eds.): Proceedings of the 1st International Workshop on the Semantic Web, 2000, Lisbon, Portugal, 2000
No Link Available