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Author Title Type [ Year(Desc)]
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1990
Hatzopoulos M., Gouscos D., Spiliopoulou M., Vassilakis C, Vazirgiannis M..  1990.  An Object-Oriented Data Model for Hypermedia Systems. Proceedings of the DELTA Conference in Research and Development. :483–493.
1992
Spiliopoulou M., Hatzopoulos M., Vassilakis C.  1992.  Using Parallelism and Pipeline for the Optimisation of Join Queries. PARLE '92: Proceedings of the 4th International PARLE Conference on Parallel Architectures and Languages Europe. :279–294.
1993
Spiliopoulou M., Hatzopoulos M., Vassilakis C.  1993.  Parallel Optimisation of Join Queries Using a Technique of Exhaustive Nature. Computers and Artificial Intelligence. 12:145–166.
1996
Spiliopoulou M., Hatzopoulos M., Vassilakis C.  1996.  A cost model for the estimation of query execution time in a parallel environment supporting pipeline. Computers and Artificial Intelligence. 15:341-368.
1999
[Anonymous].  1999.  Proceedings of the Sixteenth National Conference on Artificial Intelligence and Eleventh Conference on Innovative Applications of Artificial Intelligence, July 18-22, 1999, Orlando, Florida, USA.
2000
Charitos D., Lepouras G, Vassilakis C, Katifori A, Halatsis C..  2000.  An Approach to Designing and Implementing Virtual Museums. Proceedings of the seventh UK VR-SIG Conference.
2001
Marrow P., Koubarakis M, van Lengen R.H., Valverde-Albacete F., Bonsma E., Cid-Suerio J., Figueiras-Vidal A.R., Gallardo-Antolin A., Hoile C., Koutris T. et al..  2001.  Agents in Decentralised Information Ecosystems: The DIET Approach. Proccedings of the Symposium on Information Agents for E-Commerce, AISB Convention. :109–117.
Marrow P., Koubarakis M, van Lengen R.H., Valverde-Albacete F., Bonsma E., Cid-Suerio J., Figueiras-Vidal A.R., Gallardo-Antolin A., Hoile C., Koutris T. et al..  2001.  Agents in Decentralised Information Ecosystems: The DIET Approach. Symposium on Information Agents for E-Commerce, AISB Convention.
Lepouras G, Charitos D., Vassilakis C, Charissi A., Halatsi L..  2001.  Building a VR - Museum in a Museum. Proceedings of the Third International Virtual Reality Conference, VRIC2001.
Charitos D., Lepouras G, Vassilakis C, Katifori A, Charissi A., Halatsi L..  2001.  Designing a virtual museum within a museum. Proceedings VAST 2001 Virtual Reality, Archeology, and Cultural Heritage. :284.
2002
Tambouris E., Boukis G., Vassilakis C, Lepouras G, Rouvas S., Canadas R., Heredia S., Usero J.CLopez.  2002.  SMARTGOV: A Governmental Knowledge-based Platform for Public Sector Online Services. Proceedings KMGov2002. :173–185.
2004
Weir G.R.S., Lepouras G, Vassilakis C.  2004.  Content enrichment through dynamic annotation. ICEIS 2004 - Proceedings of the Sixth International Conference on Enterprise Information Systems. :152-157.
2005
Vassilakis C, Lepouras G, Fraser J, Haston S.  2005.  Barriers To Electronic Service Development. e-Service Journal. Fall 2005:41-63.
Vassilakis C, Lepouras G, Halatsis C., Lobo TPariente.  2005.  An XML model for electronic services. Electronic Government. 2:41-55.
2006
Katifori A, Torou E, Halatsis C., Lepouras G, Vassilakis C.  2006.  A Comparative Study of Four Ontology Visualization Techniques in Protege: Experiment Setup and Preliminary Results. IV '06: Proceedings of the conference on Information Visualization. :417–423.
Golemati M., Halatsis C., Vassilakis C, Katifori A, Lepouras G.  2006.  A context-based adaptive visualization environment. Proceedings of the International Conference on Information Visualisation. :62-67.
Torou E, Katifori A, Vassilakis C, Lepouras G, Halatsis C..  2006.  Creating an Historical Archive Ontology: Guidelines and Evaluation. ICDIM. :102-109.
Petrakis E.G.M., Varelas G, Hliaoutakis A, Raftopoulou P.  2006.  Design and Evaluation of Semantic Similarity Measures for Concepts Stemming from the Same or Different Ontologies. Proceedings of the 4th Workshop on Multimedia Semantics (WMS).
Katifori A, Vassilakis C, Lepouras G, Daradimos I., Halatsis C..  2006.  Visualizing a temporally-enhanced ontology. AVI '06: Proceedings of the working conference on Advanced visual interfaces. :488–491.
Petrakis E.G.M., Varelas G, Hliaoutakis A, Raftopoulou P.  2006.  X-Similarity: Computing Semantic Similarity between Concepts from Different Ontologies. Journal of Digital Information Management (JDIM).
2007
Katifori A, Golemati M., Vassilakis C, Lepouras G, Halatsis C..  2007.  Creating an Ontology for the User Profile: Method and Applications. RCIS. :407–412.
Lepouras G, Vassilakis C, Halatsis C., Georgiadis P..  2007.  Domain expert user development: The smartgov approach. Communications of the ACM. 50:79-83.
Katifori A, Vassilakis C, Torou E, Lepouras G, Halatsis C., Daradimos I..  2007.  Historical Archive Ontologies Requirements, Modeling and Visualization. RCIS. :401-406.
Vassilakis C, Lepouras G, Halatsis C..  2007.  A knowledge-based approach for developing multi-channel e-government services. Electronic Commerce Research and Applications. 6:113-124.
Katifori A, Halatsis C., Lepouras G, Vassilakis C, Giannopoulou E.G..  2007.  Ontology visualization methods - A survey. ACM Computing Surveys. 39:10:1-10:43.