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All Categories: 408 articles

[2016]  [2015]  [2014]  [2013]  [2012]  [2011]  [2010]  [2009]  [2008]  [<2008]

	2016
	E. Spyromitros-Xioufis, G. Tsoumakas, W. Groves, I. Vlahavas, “Multi-Target Regression via Input Space Expansion: Treating Targets as Inputs”, Machine Learning, Johannes Furnkranz (Ed.), Springer, 2016.
	I. Sakellariou, N. Bassiliades, P. Kefalas, D. Stamatis, “Logic Programming Techniques: The Prolog language (in Greek - Τεχνικές Λογικού Προγραμματισμού: Η Γλώσσα Prolog)”, [ebook], ISBN 978-960-603-246-2, Hellenic Academic Libraries Link, Available Online at: http://hdl.handle.net/11419/777, Athens, 2016.
	K. Kravari, N. Bassiliades, G. Governatori, “A Policy-based B2C e-Contract Management Workflow Methodology Using Semantic Web Agents”, Artificial Intelligence and Law, Springer, accepted for publication, 2016.
	K. Kravari, N. Bassiliades, “DISARM: A Social Distributed Agent Reputation Model based on Defeasible Logic”, Journal of Systems and Software, Elsevier, accepted for publication, 2016.
	Year Total: 4
	2015
	E. Kontopoulos, G. Martinopoulos, D. Lazarou, N. Bassiliades, “An Ontology-based Decision Support Tool for Optimizing Domestic Solar Hot Water System Selection”, Journal of Cleaner Production, Elsevier, (accepted), 2015.
	E. Rigas, S. Ramchurn, N. Bassiliades, “Algorithms for Electric Vehicle Scheduling in Mobility-on-Demand Schemes”, 2015 IEEE 18th International Conference on Intelligent Transportation Systems, IEEE, (accepted for presentation), Las Palmas de Gran Canaria, Spain, 15-18 Sep 2015, 2015.
	N. Bassiliades, P. Fodor, A. Giurca, G. Gottlob, T. Kliegr, G. Nalepa, M. Palmirani, A. Paschke, M. Proctor, D. Roman, F. Sadri, N. Stojanovic, “Joint Proceedings of the 9th International Rule Challenge, the Special Track on Rule-based Recommender Systems for the Web of Data, RuleML2015 Industry Track and the 5th RuleML Doctoral Consortium”, CEUR Workshop Proceedings, ISSN 1613-0073, CEUR.org, 1417, Berlin, Germany, August 2-5, 2015, 2015.
	N. Bassiliades, G. Gottlob, F. Sadri, A. Paschke, D. Roman, “Rule Technologies: Foundations, Tools, and Applications, Proceedings of 9th International Symposium, RuleML 2015”, Lecture Notes in Computer Science, Springer, 9202, pp. 474, Berlin, Germany, August 2-5, 2015, 2015.
	N. Bassiliades, M. Ivanovic, M. Kon-Popovska, Y. Manolopoulos, T. Palpanas, G. Trajcevski, A. Vakali, “New Trends in Database and Information Systems II”, Selected papers of the 18th East European Conference on Advances in Databases and Information Systems and Associated Satellite Events, ADBIS 2014, Proceedings II, Springer, Advances in Intelligent Systems and Computing, Vol. 312, pp. 340, Ohrid, Macedonia, September 7-10, 2014, 2015.
	E. Papagiannopoulou, G. Tsoumakas, N. Bassiliades, “On Discovering Relationships in Multi-Label Learning via Linked Open Data”, 4th Workshop on Knowledge Discovery and Data Mining Meets Linked Open Data (Know@LOD 2015), Johanna Volker, Heiko Paulheim, Jens Lehmann, Vojtech Svatek (Ed.), CEUR Workshop Proceedings, Vol-1365, 2015.
	R. Akerkar, V. Ermolayev, N. Bassiliades, “Editorial of Special issue on Web Intelligence, Mining and Semantics”, International Journal on Artificial Intelligence Tools, World Scientific, 24 (2), pp. 1502002, 2015.
	T. Stavropoulos, G. Koutitas, D. Vrakas, E. Kontopoulos, I. Vlahavas, “A smart university platform for building energy monitoring and savings”, Journal of Ambient Intelligence and Smart Environments, IOS Press, IF 2014: 1.082 (to appear), 2015.
	T. Stavropoulos, S. Andreadis, N. Bassiliades, D. Vrakas, I. Vlahavas, “The Tomaco Hybrid Matching Framework for SAWSDL Semantic Web Services”, IEEE Transactions on Services Computing, IEEE, IF: 1.985 (to appear), 2015.
	E. Spyromitros-Xioufis, S. Papadopoulos, A. Ginsca, A. Popescu, I. Kompatsiaris, I. Vlahavas, “Improving Diversity in Image Search via Supervised Relevance Scoring”, International Conference on Multimedia Retrieval, ACM, Shanghai, China, 2015.
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “A Context-Aware Web-Mapping System for Group-Targeted Offers Using Semantic Technologies”, Expert Systems with Applications, Elsevier, Vol. 42, No. 9, pp. 4443-4459, 2015.
	E. Rigas, S. Ramchurn, N. Bassiliades, “Managing Electric Vehicles in the Smart Grid Using Artificial Intelligence: A Survey”, IEEE Transactions on Intelligent Transportation Systems, IEEE, (to appear), 2015.
	F. Markatopoulou, G. Tsoumakas, I. Vlahavas, “Dynamic Ensemble Pruning based on Multi-Label Classification”, Neurocomputing, Elsevier, Volume 150, Part B, pp. 501-512, 2015.
	K. Kravari, N. Bassiliades, “A Survey of Agent Platforms”, Journal of Artificial Societies and Social Simulation, SIMSOC Consortium, 18 (1), pp. 11, 2015.
	T. Stavropoulos, E. Kontopoulos, N. Bassiliades, J. Argyriou, A. Bikakis, D. Vrakas, I. Vlahavas, “Rule-based Approaches for Energy Savings in an Ambient Intelligence Environment”, Journal of Pervasive and Mobile Computing, Elsevier, Vol. 19, pp. 1-23, 2015.
	A. Seitaridis, E. Rigas, N. Bassiliades, S. Ramchurn, “Towards an Agent-based Negotiation Scheme for Scheduling Electric Vehicle Charging”, 13th European Conference on Multi-Agent Systems, Athens,Greece, 2015.
	Year Total: 16
	2014
	I. Savvas, N. Bassiliades, E. Pimenidis, A. Sideridis, “Building a logic for a public administration service transformation algorithm”, E-Democracy, Security, Privacy and Trust in a Digital World, 5th International Conference, E-Democracy 2013, Springer, Communications in Computer and Information Science, Vol. 441, pp. 73-79, Athens, Greece, Dec 5-6, 2013, 2014.
	I. Kavakiotis, A. Xochelli, A. Agathangelidis, G. Tsoumakas, N. Maglaveras, K. Stamatopoulos, A. Hadzidimitriou, I. Vlahavas, I. Chouvarda, “Integrating Multiple Immunogenetic Data Sources For Feature Extraction and Mining Mutation Patterns: The Case of Chronic Lymphocytic Leukemia Shared Mutations”, Statistical Methods for Omics Data Integration and Analysis. Heraklion, Crete, Greece, November 10-12, 2014.
	N. Kotsiopoulos, D. Vrakas, “Policies Production System for Ambient Intelligence Environments”, 8th Hellenic Conference on Artificial Intelligence (SETN 2014), A. Likas, K. Blekas, D. Kalles (Ed.), Springer International Publishing, LNAI 8445, pp. 251-263, Ioannina, 2014.
	O. Hatzi, M. Nikolaidou, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “Semantically Aware Web Service Composition Through AI Planning”, International Journal on Artificial Intelligence Tools, Nikolaos Bourbakis (Ed.), World Scientific, 24, pp. 1450015, 2014.
	E. Spyromitros-Xioufis, S. Papadopoulos, I. Kompatsiaris, I. Vlahavas, “SocialSensor: Finding Diverse Images at MediaEval 2014”, CEUR Workshop Proceedings, CEUR-WS.org, Vol-1263, pp. 2, Barcelona, Catalunya, Spain, 2014.
	N. Bassiliades, “Collecting University Rankings for Comparison Using Web Extraction and Entity Linking Techniques”, ICT in Education, Research and Industrial Applications, V. Ermolayev et al. (Ed.), Springer-Verlag, CCIS, Vol. 469, pp. 23-46, 2014.
	N. Spolaor, M. Monard, G. Tsoumakas, H. Lee, “Label Construction for Multi-label Feature Selection”, Proceedings of the 2014 Brazilian Conference on Intelligent Systems (BRACIS), Sao Carlos, Brazil, 2014.
	G. Tsoumakas, E. Spyromitros-Xioufis, I. Vlahavas, “Drawing Parallels between Multi-Label Classification and Multi-Target Regression”, ECML PKDD 2014 Workshop on Multi-Target Prediction, Nancy, France, 2014.
	I. Papanikolaou, D. Dimitriadis, G. Tsoumakas, M. Laliotis, N. Markantonatos, I. Vlahavas, “Ensemble Approaches for Large-Scale Multi-Label Classification and Question Answering in Biomedicine”, Proceedings BioASQ 2014 Workshop, Sheffield, UK, 2014.
	G. Tsoumakas, E. Spyromitros-Xioufis, A. Vrekou, I. Vlahavas, “Multi-Target Regression via Random Linear Target Combinations”, Proceedings of ECML PKDD 2014, Springer, Nancy, France, 2014.
	A. Arvanitidis, A. Serafi, A. Vakali, G. Tsoumakas, “Branty: A Social Media Ranking Tool For Brands”, Proceedings of ECML PKDD 2014, Springer, Nancy, France, 2014.
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “Geosocial SPLIS: A Rule-Based Service for context-aware point of interest exploration”, 8th International Rule Challenge at RuleML 2014, co-located with the 21st European Conference on Artificial Intelligence (ECAI 2014), Th. Patkos, A. Wyner, A. Giurca (Ed.), CEUR Workshop Proceedings, 1211, Prague, Czech Republic, August 18-20, 2014, 2014.
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “Using Rules to Develop a Personalized and Social Location Information System for the Semantic Web”, Proc. 8th International Web Rule Symposium (RuleML 2014), co-located with the 21st European Conference on Artificial Intelligence (ECAI 2014), A. Bikakis et al. (Ed.), Springer, LNCS 8620, pp. 82-96, Prague, Czech Republic, August 18-20, 2014, 2014. (1)
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “Providing a context-aware location based web service through semantics and user-defined rules”, Proc. 4th International Conference on Web Intelligence, Mining and Semantics (WIMS’14), ACM, New York, NY, USA, DOI=10.1145/2611040.261, pp. Article 9, Thessaloniki, Greece, June 2-4 2014, 2014.
	R. Akerkar, N. Bassiliades, J. Davies, V. Ermolayev, “Research and Applications in Web Intelligence, Mining, and Semantics”, Proc. 4th International Conference on Web Intelligence, Mining and Semantics (WIMS’14), ACM, New York, NY, USA, DOI=10.1145/2611040.2611045, pp. Article 0, Thessaloniki, Greece, June 2-4 2014, 2014.
	C. Badica, N. Bassiliades, S. Ilie, K. Kravari, “Agent Reasoning on the Web using Web Services”, Computer Science and Information Systems, Vol. 11, No. 2, pp. 697-721, 2014.
	R. Akerkar, N. Bassiliades, J. Davies, V. Ermolayev, “Proceedings of the 4th International Conference on Web Intelligence, Mining and Semantics (WIMS14)”, The ACM International Conference Proceedings Series, ACM, New York, USA, ISBN: 978-1-4503-2538-7, 2-4 June 2014, Thessaloniki, Greece, 2014.
	T. Stavropoulos, E. Kontopoulos, D. Sfounis, D. Vrakas, N. Bassiliades, I. Vlahavas, “An Applied Energy Management Approach in Intelligent Environments based on a Hybrid Agent Architecture”, Proc. 3rd International Workshop on AI Problems and Approaches for Intelligent Environments (AI4IE) in conjunction with ECAI 2014, http://ceur-ws.org/, (to appear), Prague, Czech Republic, August 18-22, 2014, 2014.
	T. Stavropoulos, E. Rigas, E. Kontopoulos, N. Bassiliades, I. Vlahavas, “A Multi-Agent Coordination Framework for Smart Building Energy Management”, Proc. 3nd International Workshop on Artificial Intelligence Techniques for Power Systems and Energy Markets (IATEM) in conjunction with DEXA 2014, IEEE, ISBN 978-1-4799-5721-7, pp. 126-130, Munich, Germany, September 1 - 4, 2014, 2014.
	E. Spyromitros-Xioufis, S. Papadopoulos, I. Kompatsiaris, G. Tsoumakas, I. Vlahavas, “A Comprehensive Study over VLAD and Product Quantization in Large-scale Image Retrieval”, IEEE Transactions on Multimedia, IEEE, 2014.
	I. Kavakiotis, A. Triantafyllidis, G. Tsoumakas, I. Vlahavas, “Feature Evaluation Metrics for Population Genomic Data”, Proceedings of 8th Hellenic Conference on Artificial Intelligence (SETN 2014)., A. Likas, K. Blekas and D. Kalles (Eds.), Springer, Artificial intelligence: Methods and Applications, LNCS, 8445, pp. 436-441, Ioannina, Greece, May 15-17, 2014, 2014.
	A. Fachantidis, I. Partalas, M. Taylor, I. Vlahavas, “An Autonomous Transfer Learning Algorithm for TD-Learners”, Proc. 8th Hellenic Conference on Artificial Intelligence (SETN 2014), (in press), Ioannina, Greece, 2014.
	Y. Zhan, A. Fachantidis, I. Vlahavas, M. Taylor, “Agents Teaching Humans in Reinforcement Learning Tasks”, Adaptive Learning Agents 2014, (in press), Paris, France, 2014.
	P. Bailis, A. Fachantidis, I. Vlahavas, “Learning to play Monopoly: A Reinforcement Learning approach”, AISB 2014: AI & GAMES, (in press), London, U.K., 2014.
	M. Taylor, N. Charboni, A. Fachantidis, I. Vlahavas, L. Torrey, “Reinforcement Learning Agents Providing Advice in Complex Video Games”, Connection Science, Taylor & Francis, (in press), 2014.
	I. Kavakiotis, G. Tzanis, I. Vlahavas, “Polyadenylation site prediction using PolyA-iEP method”, Polyadenylation Method and Protocols, Joanna Rorbach and Agnieszka Bobrowicz (Eds.), Springer, Methods In Molecular Biology, 1125, pp. 131-140, 2014.
	I. Kavakiotis, A. Triantafyllidis, P. Samaras, A. Voulgaridis, N. Karaiskou, E. Konstantinidis, I. Vlahavas, “Pattern discovery for microsatellite genome analysis”, Computers in Biology and Medicine, Edward John Ciaccio (Ed.), Elsevier, 2014.
	A. Tsadiras, N. Bassiliades, “Using RuleML for Representing and Prolog for Simulating Fuzzy Cognitive Maps”, Fuzzy Cognitive Maps for Applied Sciences and Engineering, Elpiniki I. Papageorgiou (Ed.), Springer, Intelligent Systems Reference Library, Volume 54, pp. 65-87, 2014.
	K. Kravari, N. Bassiliades, C. Papavasileiou, “Choreographing agent encounters in the Semantic Web using rules”, Journal of Intelligent and Fuzzy Systems, IOS Press, Vol. 27, No. 2, pp. 625-640, 2014.
	I. Kavakiotis, G. Tzanis, I. Vlahavas, “Mining Frequent Patterns and Association Rules from Biological Data”, Biological Knowledge Discovery Handbook: Preprocessing, Mining and Postprocessing of Biological Data, Mourad Elloumi and Albert Y. Zomaya (Eds.), Wiley-Blackwell (John Wiley & Sons), 2014.
	Year Total: 30
	2013
	K. Lazou, M. Farini, V. Koutkias, V. Drossou, N. Maglaveras, N. Bassiliades, “On the Design of a Knowledge Base for Adverse Drug Event Prevention in Neonatal Intensive Care Units”, poster presented at 5th Panhellenic Conference on Biomedical Technologies, Athens, Greece, April 4-6, 2013, 2013.
	C. Liaskos, G. Koutitas, I. Vlahavas, “A holistic virtual laboratory on wireless communications and sensor networks”, Journal of Interactive Mobile Technologies, International Association of Online Engineering, 2013.
	A. Fachantidis, I. Partalas, M. Taylor, I. Vlahavas, “Autonomous Selection of Inter-Task Mappings in Transfer Learning”, 2013 AAAI Spring Symposium Series, AAAI, Stanford, U.S.A., 2013.
	A. Fachantidis, A. Di Nuovo, A. Cangelosi, I. Vlahavas, “Model-based reinforcement learning for humanoids: A study on forming rewards with the iCub platform”, Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB), 2013 IEEE SSCI, IEEE, pp. 87-93, Singapore, 2013.
	F. Briggs, Yonghong Huang, R. Raich, K. Eftaxias, Zhong Lei, W. Cukierski, S. Hadley, A. Hadley, M. Betts, X. Fern, J. Irvine, L. Neal, A. Thomas, G. Fodor, G. Tsoumakas, Hong Wei Ng, Thi Ngoc Tho Nguyen, H. Huttunen, P. Ruusuvuori, T. Manninen, A. Diment, T. Virtanen, J. Marzat, J. Defretin, D. Callender, C. Hurlburt, K. Larrey, M. Milakov, “The 9th annual MLSP competition: New methods for acoustic classification of multiple simultaneous bird species in a noisy environment”, Proc. 2013 IEEE International Workshop on Machine Learning for Signal Processing (MLSP), IEEE, 2013.
	N. Spolaor, G. Tsoumakas, “Evaluating Feature Selection Methods for Multi-Label Text Classification”, BioASQ Workshop, Valencia, Spain, September 27, 2013, 2013.
	G. Tsoumakas, M. Laliotis, N. Markantonatos, I. Vlahavas, “Large-Scale Semantic Indexing of Biomedical Publications at BioASQ”, BioASQ Workshop, Valencia, Spain, September 27, 2013, 2013.
	E. Rigas, S. Ramchurn, N. Bassiliades, G. Koutitas, “Congestion Management for Urban EV Charging Systems”, 4th IEEE International Conference on Smart Grid Communications (SmartGridComm 2013), IEEE, Vancouver, Canada, 21-24 Oct 2013, 2013. (3)
	K. Kravari, C. Papavasileiou, N. Bassiliades, “Knowledge-based e Contract Negotiation among Agents Using Semantic Web Technologies”, 5th International Conference on Computational Collective Intelligence Technologies and Applications (ICCCI 2013), C. Badica, N.T. Nguyen, and M. Brezovan (Eds.), Springer, LNAI 8083, pp. 215-224, Craiova, Romania, 11 - 13 Sep 2013, 2013.
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “A Rule Based Personalized Location Information System for the Semantic Web”, 14th International Conference on Electronic Commerce and Web Technologies (EC-Web '13), C. Huemer and P. Lops (Eds.), Springer, Lecture Notes in Business Information Processing, Volume 152, pp. 27-38, Prague, Czech Republic, 26-29 Aug 2013, 2013.
	F. Kokkoras, K. Ntonas, N. Bassiliades, “DEiXTo: A web data extraction suite”, 6th Balkan Conference on Informatics (BCI 2013), ACM, pp. 9-12, Thessaloniki, Greece, 19-21 Sep 2013, 2013. (3)
	C. Badica, N. Bassiliades, S. Ilie, K. Kravari, “Enabling Agent Reasoning over the Web”, 6th Balkan Conference on Informatics (BCI 2013), ACM, pp. 259-266, Thessaloniki, Greece, 19-21 Sep 2013, 2013.
	K. Lazou, M. Farini, V. Koutkias, V. Drossou, N. Maglaveras, N. Bassiliades, “Adverse Drug Event Prevention in Neonatal Care: A Rule-Based Approach”, European Federation of Medical Informatics special topic conference on Data and Knowledge for Medical Decision Support (EFMI STC 2013), Studies in Health Technology and Informatics, B. Blobel et al. (Ed.), IOS Press, Vol. 186, pp. 170-174, Prague, Czech Republic, April 17th-19th 2013, 2013. (1)
	D. Angelides, Y. Xenidis, N. Bassiliades, E. Loukogeorgaki, A. Taflanidis, D. Vrakas, S. Arnaouti, G. Meditskos, “The Development of a New Framework for Managing Risks in the European Industry: The IRIS RISK PARADIGM”, Industrial Safety and Life Cycle Engineering: Technologies / Standards / Applications, Helmut Wenzel (Ed.), VCE, ISBN 978-3-200-03179-1, pp. 23-56, 2013.
	N. Alechina, N. Bassiliades, M. Dastani, M. de Vos, B. Logan, S. Mera, A. Morris-Martin, F. Schapachnik, “Computational Models for Normative Multi-Agent Systems”, Normative Multi-Agent Systems. Dagstuhl Follow-Ups, G. Andrighetto, G. Governatori, P. Noriega, L. W.N. van der Torre (Eds.), Schloss Dagstuhl, Vol. 4, pp. 71-92, 2013. (2)
	E. Ziaka, D. Vrakas, N. Bassiliades, “Web Service Composition Plans in OWL-S”, Agents and Artificial Intelligence, Communications in Computer and Information Science (CCIS), J. Filipe and A. Fred (Eds.), Springer Berlin Heidelberg, Vol. 271, pp. 240-254, 2013. (2)
	E. Kontopoulos, C. Berberidis, T. Dergiades, N. Bassiliades, “Ontology-based Sentiment Analysis of Twitter Posts”, Expert Systems with Applications, Elsevier, 40 (10), pp. 4065-4074, 2013. (44)
	T. Stavropoulos, D. Vrakas, I. Vlahavas, “Iridescent: a Tool for Rapid Semantic Annotation of Web Service Descriptions”, Proc. 3nd International Conference on Web Intelligence, Mining and Semantics (WIMS’ 13), ACM, pp. 12:1-12:9, 2013. (2)
	T. Stavropoulos, K. Gottis, D. Vrakas, I. Vlahavas, “aWESoME: a Web Service Middleware for Ambient Intelligence”, Expert Systems With Applications, Elsevier, 40 (11), pp. 4380-4392, 2013. (20)
	A. Fachantidis, I. Partalas, G. Tsoumakas, I. Vlahavas, “Transferring Task Models in Reinforcement Learning Agents”, Neurocomputing, Elsevier, 107, pp. 23-32, 2013.
	A. Tsadiras, N. Bassiliades, “RuleML Representation and Simulation of Fuzzy Cognitive Maps”, Expert Systems with Applications, Elsevier, 40 (5), pp. 1413-1426, 2013. (1)
	O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “The PORSCE II Framework: Using AI Planning for Automated Semantic Web Service Composition”, The Knowledge Engineering Review, Cambridge University Press, Vol. 28, No. 2, pp. 137-156, 2013. (8)
	Year Total: 22
	2012
	C. Liaskos, G. Koutitas, I. Vlahavas, “Virtual Laboratories on Wireless Communications: A contemporary, extensible approach”, IEEE EDUCON, IEEE, Morocco, 2012.
	K. Kravari, N. Bassiliades, H. Boley, “Cross-Community Interoperation Between Knowledge-Based Multi-Agent Systems: A Study on EMERALD and Rule Responder”, Journal of Expert Systems With Applications, Elsevier, 39 (10), pp. 9571-9587, 2012. (1)
	K. Kravari, N. Bassiliades, “HARM: A Hybrid Rule-based Agent Reputation Model based on Temporal Defeasible Logic”, 6th International Symposium on Rules: Research Based and Industry Focused, Antonis Bikakis, Adrian Giurca (Ed.), Springer Berlin / Heidelberg, 7438, pp. 193 - 207, Montpellier, France, 2012. (4)
	I. Savvas, N. Bassiliades, K. Kravari, G. Meditskos, “An Ontological Business Process Modeling Approach for Public Administration: The Case of Human Resource Management”, Handbook of Research on E-Business Standards and Protocols: Documents, Data and Advanced Web Technologies, IGI Global, Vol. II, Ch. 33, pp. 725-753, 2012. (1)
	I. Savvas, N. Bassiliades, E. Pimenidis, A. Sideridis, “Paving the way for a Transformational Public Administration global security, safety and sustainability and e-Democracy”, Global Security, Safety And Sustainability and E-Democracy, Proc. 17th ICGS3 / 4th e-Democracy Joint Conferences 2011, C. K. Georgiadis, H. Jahankhani, E. Pimenidis, R. Bashroush, and A. Al-Nemrat (Eds.), Springer, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 99, pp. 194-203, Thessaloniki, Greece, 24-26 Aug, 2011, 2012.
	E. Rigas, G. Meditskos, N. Bassiliades, “SWRL2COOL: Object-Oriented Transformation of SWRL in the CLIPS Production Rule Engine”, Proc. 7th Hellenic Conference on Artificial Intelligence (SETN 2012), Ilias Maglogiannis , Vassilis Plagianakos and Ioannis Vlahavas (Eds.), Springer, LNAI 7297, pp. 49-56, Lamia, Greece, May 28-31, 2012, 2012.
	N. Bassiliades, “Agents and Knowledge Interoperability in the Semantic Web Era”, Proc. 2nd International Conference on Web Intelligence, Mining and Semantics (WIMS’ 12), Dumitru Dan Burdescu, Rajendra Akerkar, Costin Badica (Ed.), ACM, pp. 46-58, Craiova, Romania, June 13-15, 2012, 2012.
	G. Meditskos, N. Bassiliades, D. Vrakas, I. Vlahavas, “IRISPortal: A Semantic Portal for Industrial Risk Cases Management”, Proc. 2nd International Conference on Web Intelligence, Mining and Semantics (WIMS’ 12), Dumitru Dan Burdescu, Rajendra Akerkar, Costin Badica (Ed.), ACM, pp. 243-250, Craiova, Romania, June 13-15, 2012, 2012. (1)
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “Personalizing Location Information through Rule-Based Policies”, Rules on the Web: Research and Applications, Proc. 6th International Symposium on Rules: Research Based and Industry Focused (RuleML 2012), A. Bikakis and A. Giurca (Eds.), Springer, LNCS 7438, pp. 215-223, Montpellier, France, August 27-31, 2012, 2012.
	I. Viktoratos, A. Tsadiras, N. Bassiliades, “PLIS+: A Rule-Based Personalized Location Information System”, Proc. of the RuleML2012@ECAI Challenge, at the 6th International Symposium on Rules, Hassan Ait-Kaci, Yuh-Jong Hu, Grzegorz J. Nalepa, Monica Palmirani, Dumitru Roman (Ed.), CEUR Workshop Proceedings, Vol-874, Montpellier, France, August 27-31, 2012, 2012.
	E. Myrgioti, N. Bassiliades, A. Miliou, “Bridging the HASM: An OWL ontology for modelling the information pathways in haptic interfaces software”, Expert Systems with Applications, Elsevier, Vol. 40, No. 4, pp. 1358-1371, 2012. (5)
	E. Spyromitros-Xioufis, S. Papadopoulos, I. Kompatsiaris, G. Tsoumakas, I. Vlahavas, “An empirical study on the combination of surf features with VLAD vectors for image search”, 13th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS), IEEE, 2012.
	E. Kontopoulos, T. Zetta, N. Bassiliades, “Semantically-enhanced Authoring of Defeasible Logic Rule Bases in the Semantic Web”, Proc. 2nd International Conference on Web Intelligence, Mining and Semantics (WIMS'12), ACM, Article 56, pp. 489-492, Craiova, Romania, June 13-15, 2012, 2012. (3)
	T. Stavropoulos, D. Vrakas, D. Vlachava, N. Bassiliades, “BOnSAI: a Smart Building Ontology for Ambient Intelligence”, Proc. 2nd International Conference on Web Intelligence, Mining and Semantics (WIMS-2012), ACM, pp. 263-274, Craiova, Romania, June 13-15, 2012, 2012. (18)
	G. Tzanis, C. Berberidis, I. Vlahavas, “StackTIS: A Stacked Generalization Approach for Effective Prediction of Translation Initiation Sites”, Computers in Biology and Medicine, Elsevier, Vol. 42, No. 1, pp. 61-69, 2012. (1)
	A. Fachantidis, I. Partalas, M. Taylor, I. Vlahavas, “Transfer Learning via Multiple Inter-Task Mappings”, Recent Advances in Reinforcement Learning, Springer Berlin Heidelberg, pp. 225-236, 2012.
	K. Chatzidimitriou, I. Partalas, P. Mitkas, I. Vlahavas, “Transferring Evolved Reservoir Features in Reinforcement Learning Tasks”, Recent Advances in Reinforcement Learning, Lecture Notes in Computer Science, Springer-Verlag, 7188, pp. 213-224, 2012.
	K. Kravari, N. Bassiliades, “Advanced Agent Discovery Services”, Proc. 2nd International Conference on Web Intelligence, Mining and Semantics (WIMS '12), ACM, New York, NY, USA, Article 38, pp. 338-349, Craiova, Romania, June 13-15, 2012, 2012.
	O. Hatzi, D. Vrakas, M. Nikolaidou, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “An Integrated Approach to Automated Semantic Web Service Composition through Planning”, IEEE Transactions on Services Computing, IEEE, 5(3), 2012. (34)
	Year Total: 19
	2011
	K. Kravari, K. Papatheodorou, G. Antoniou, N. Bassiliades, “Reasoning and Proofing Services for Semantic Web Agents”, In proceedings of the 22nd International Join Conference on Artificial Intelligence (IJCAI-2011), AAAI Press, 3, pp. 2662-2667, Barcelona, Spain, 2011. (5)
	N. Bassiliades, G. Governatori, A. Paschke, “Rule-Based Reasoning, Programming, and Applications”, Proceedings of 5th International Symposium, RuleML 2011 – Europe, Springer, LNCS, Vol. 6826, pp. 383, 2011. (1)
	G. Papadopoulos, N. Bassiliades, “Monitoring Conformance to the Internal Regulation of an MSc Course using Ontologies and Rules”, Proc. 2nd International Conference on Electronic Government and the Information Systems Perspective (EGOVIS'11), Kim Normann Andersen, Enrico Francesconi, Ake Gronlund and Tom M. van Engers (Eds.), Springer, LNCS 6866, pp. 212-226, Toulouse, France, Aug 29-Sep 2, 2011, 2011. (2)
	C. Badica, N. Bassiliades, “Special issue on Intelligent Distributed Systems: Preface”, International Journal on Artificial Intelligence Tools, World Scientific, 20(6), pp. 981-984, 2011.
	E. Kontopoulos, N. Bassiliades, G. Governatori, G. Antoniou, “A Modal Defeasible Reasoner of Deontic Logic for the Semantic Web”, International Journal on Semantic Web and Information Systems (IJSWIS), IGI Global, 7(1), pp. 18-43, 2011. (6)
	K. Trohidis, G. Tsoumakas, G. Kalliris, I. Vlahavas, “Multi-label classification of music by emotion”, EURASIP Journal on Audio, Speech, and Music Processing, 2011:4, 2011.
	T. Stavropoulos, D. Vrakas, I. Vlahavas, “A Survey of Service Composition in Ambient Intelligence Environments”, Artificial Intelligence Review, Springer, 2011. (17)
	G. Boutsioukis, I. Partalas, I. Vlahavas, “Transfer Learning in Multi-agent Reinforcement Learning Domains”, Accepted for presentation at the 9th European Workshop on Reinforcement Learning and to be published in the Workshop Proceedings, 2011.
	E. Spyromitros-Xioufis, K. Sechidis, G. Tsoumakas, I. Vlahavas, “MLKD's Participation at the CLEF 2011 Photo Annotation and Concept-Based Retrieval Tasks”, ImageClef Lab of CLEF 2011 Conference on Multilingual and Multimodal Information Access Evaluation, Amsterdam, Netherlands, 2011.
	E. Spyromitros-Xioufis, E. Stachtiari, G. Tsoumakas, I. Vlahavas, “A Hybrid Approach for Cold-start Recommendations of Videolectures”, Proceedings ECML/PKDD 2011 Discovery Challenge Workshop, Athens, Greece, 2011.
	T. Stavropoulos, D. Vrakas, A. Arvanitidis, I. Vlahavas, “A System for Energy Savings in an Ambient Intelligence Environment”, Proc. ICT-GLOW 2011, Toulouse, France, 2011. (1)
	A. Fachantidis, I. Partalas, G. Tsoumakas, I. Vlahavas, “Transferring Models in Hybrid Reinforcement Learning Agents”, Proc. Engineering Applications of Neural Networks, Springer Berlin Heidelberg, pp. 162-171, 2011.
	K. Sechidis, G. Tsoumakas, I. Vlahavas, “On the Stratification of Multi-Label Data”, Proceedings of ECML PKDD 2011, Athens, Greece, 2011.
	K. Kravari, K. Papatheodorou, G. Antoniou, N. Bassiliades, “Extending a Multi-agent Reasoning Interoperability Framework with Services for the Semantic Web Logic and Proof Layers”, 5th International Symposium on Rules: Research Based and Industry Focused (RuleML-2011@IJCAI), Springer Berlin / Heidelberg, Volume 6826/2011, pp. 29-43, Barcelona, Spain, 2011. (1)
	K. Kravari, T. Osmun, H. Boley, N. Bassiliades, “Cross-Community Interoperation Between the EMERALD and Rule Responder Multi-Agent Systems”, Proc. 5th International Symposium on Rules: Research Based and Industry Focused (RuleML-2011@IJCAI), Springer Berlin / Heidelberg, LNCS 6826, pp. 44-51, Barcelona, Spain, 2011. (1)
	D. Settas, G. Meditskos, N. Bassiliades, I. Stamelos, “Detecting antipatterns using a Web-based collaborative antipattern ontology knowledge base”, ONTOSE 2011: 5th International Workshop on Ontology, Models, Conceptualization and Epistemology in Social, Artificial and Natural Systems, pre conference workshop of CAiSE 2011, Springer, LNBIP 83, pp. 478-488, June 20th 2011, London, United Kingdom, 2011. (1)
	V. Katos, D. Vrakas, P. Katsaros, “A Framework for Access Control with Inference Constraints”, IEEE Computer Software and Applications Conference (COMPSAC 2011), Munich, Germany, 2011. (2)
	G. Meditskos, N. Bassiliades, “CLIPS-OWL: A framework for providing object-oriented extensional ontology queries in a production rule engine”, Data and Knowledge Engineering, Elsevier, 70(7), pp. 661-681, 2011. (4)
	D. Settas, G. Meditskos, I. Stamelos, N. Bassiliades, “SPARSE: A Symptom-based Antipattern Retrieval Knowledge-based System Using Semantic Web Technologies”, Expert Systems with Applications, Elsevier, 38(6), pp. 7633-7646, 2011. (8)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “Visualizing Semantic Web Proofs of Defeasible Logic in the DR-DEVICE System”, Knowledge-based Systems, Elsevier, 24(3), pp. 406-419, 2011. (8)
	G. Meditskos, N. Bassiliades, “A Combinatory Framework of Web 2.0 Mashup Tools, OWL-S and UDDI”, Expert Systems with Applications, Elsevier, 38(6), pp. 6657-6668, 2011. (20)
	E. Spyromitros-Xioufis, G. Tsoumakas, I. Vlahavas, “Multi-label Learning Approaches for Music Instrument Recognition”, Proc. 9th International Symposium on Methodologies for Intelligent Systems (ISMIS 2011), Warsaw, Poland, 2011.
	E. Spyromitros-Xioufis, M. Spiliopoulou, G. Tsoumakas, I. Vlahavas, “Dealing with Concept Drift and Class Imbalance in Multi-label Stream Classification”, Proc. 22nd International Conference on Artificial Intelligence (IJCAI 2011), AAAI press, Barcelona, Spain, 2011. (8)
	G. Tzanis, I. Kavakiotis, I. Vlahavas, “PolyA-iEP: A Data Mining Method for the Effective Prediction of Polyadenylation Sites”, Expert Systems with Applications, Elsevier, 38(10), pp. 1239812408, 2011. (6)
	E. Ziaka, D. Vrakas, N. Bassiliades, “Translating Web Services Composition Plans to OWL-S Descriptions”, Proc. 3rd International Conference on Agents and Artificial Intelligence (ICAART 2011), pp. 167-176, 28-30 Jan 2011, Rome, Italy, 2011. (5)
	G. Tsoumakas, E. Spyromitros-Xioufis, J. Vilcek, I. Vlahavas, “Mulan: A Java Library for Multi-Label Learning”, Journal of Machine Learning Research, 12, pp. 2411-2414, 2011. (75)
	G. Tsoumakas, I. Katakis, I. Vlahavas, “Random k-Labelsets for Multi-Label Classification”, IEEE Transactions on Knowledge and Data Engineering, IEEE, 23(7), pp. 1079-1089, 2011. (25)
	I. Vlahavas, P. Kefalas, N. Bassiliades, F. Kokkoras, I. Sakellariou, “Artificial Intelligence, 3rd edition (in Greek - Τεχνητή Νοημοσύνη, Γ' Έκδοση)”, Book, Έκδοση/Διάθεση: Εκδόσεις Πανεπιστημίου Μακεδονίας, ISBN 978-960-8396-64-7, 2011. (30)
	Year Total: 28
	2010
	K. Kravari, G. Kastori, N. Bassiliades, G. Governatori, “A Contract Agreement Policy-Based Workflow Methodology for Agents Interacting in the Semantic Web”, Semantic Web Rules, Proc. 4th International Web Rule Symposium (RuleML 2010), Springer, 6403, pp. 225-239, Washington, DC, USA, 2010. (2)
	K. Kravari, C. Malliarakis, N. Bassiliades, “T-REX: A hybrid agent trust model based on witness reputation and personal experience”, Proc. 11th International Conference on Electronic Commerce and Web Technologies (EC-Web 2010), Spinger, 61 - Part 3, pp. 107-118, Bilbao, Spain, 2010. (2)
	N. Bassiliades, G. Governatori, A. Paschke, J. Dix, “Guest editors' introduction: Rule representation, interchange, and reasoning in distributed, heterogeneous environments”, IEEE Transactions on Knowledge and Data Engineering, IEEE Computer Society, 22(11), pp. 1489-1491, 2010. (2)
	I. Vlahavas, N. Bassiliades, “Special issue on Artificial Intelligence Techniques for Pervasive Computing: Preface”, International Journal on Artificial Intelligence Tools, World Scientific, 19(2), pp. 133-135, 2010.
	K. Mokos, G. Meditskos, P. Katsaros, N. Bassiliades, V. Vassiliadis, “Ontology-based Model Driven Engineering for Safety Verification”, Proc. 36th EUROMICRO Conference on Software Engineering and Advanced Applications (SEAA 2010), IEEE Computer Society, pp. 47-54, Lille, France, 1-3 Sep 2010, 2010. (6)
	G. Tsoumakas, E. Spyromitros-Xioufis, J. Vilcek, I. Vlahavas, “Mulan: A Java Library for Multi-Label Learning”, ICML 2010 Workshop on Machine Learning Open Source Software (MLOSS 2010), Demo/Poster Session, Haifa, Israel, 2010.
	G. Nasierding, A. Kouzani, G. Tsoumakas, “A Triple-Random Ensemble Classification Method for Mining Multi-label Data”, Proc. 2010 IEEE International Conference on Data Mining Workshops, pp. 49-56, 2010.
	F. Markatopoulou, G. Tsoumakas, I. Vlahavas, “Instance-Based Ensemble Pruning via Multi-Label Classification”, 22nd International Conference on Tools with Artificial Intelligence, 27-29 October 2010., IEEE, Arras, France, 2010. (2)
	M. Ioannou, G. Sakkas, G. Tsoumakas, I. Vlahavas, “Obtaining Bipartitions from Score Vectors for Multi-Label Classification”, 22nd International Conference on Tools with Artificial Intelligence, 27-29 October 2010., IEEE, Arras, France, 2010. (4)
	T. Stavropoulos, A. Tsioliaridou, G. Koutitas, D. Vrakas, I. Vlahavas, “System Architecture for a Smart University Building”, ICANN '10 Intelligent Environmental Monitoring, Modelling and Management Systems for better QoL Workshop, Thessaloniki, 2010. (7)
	M. Befa, E. Kontopoulos, N. Bassiliades, C. Berberidis, I. Vlahavas, “Deploying a Semantically-Enabled Content Management System in a State University”, Proceedings of EGOVIS 2010, K. N. Andersen et al. (Eds.), Springer, Heidelberg, LNCS 6267, pp. 257-264, 2010. (6)
	K. Kravari, E. Kontopoulos, N. Bassiliades, “Trusted Reasoning Services for Semantic Web Agents”, Informatica: International Journal of Computing and Informatics, Slovenian Society Informatika, 34(4), pp. 429-440, 2010.
	G. Tzanis, I. Vlahavas, “Mining for Mutually Exclusive Gene Expressions”, 6th Hellenic Conference on Artificial Intelligence, S. Konstantopoulos, S. Perantonis, et al. (Ed.), Springer Verlag, Athens, Greece, 2010.
	I. Partalas, G. Tsoumakas, I. Vlahavas, “An Ensemble Uncertainty Aware Measure for Directed Hill Climbing Ensemble Pruning”, Machine Learning, Springer, 2010. (7)
	O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “Semantic Awareness in Automated Web Service Composition through Planning”, 6th Hellenic Conference on Artificial Intelligence (SETN 2010), Springer, LNAI, Vol. 6040, pp. 123-132, Athens, Greece, 4-7 May, 2010. (7)
	K. Kravari, E. Kontopoulos, N. Bassiliades, “EMERALD: A Multi-Agent System for Knowledge-based Reasoning Interoperability in the Semantic Web”, 6th Hellenic Conference on Artificial Intelligence (SETN 2010), Springer Berlin / Heidelberg, LNCS, Vol. 6040/2010, pp. 173-182, Athens, Greece, 4-7 May, 2010. (5)
	O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “A visual programming system for automated problem solving”, Expert Systems with Applications, Elsevier, 37(6), pp. 4611-4625, 2010. (8)
	G. Meditskos, N. Bassiliades, “DLEJena: A Practical Forward-Chaining OWL 2 RL Reasoner Combining Jena and Pellet”, Journal of Web Semantics, Elsevier, 8(1), pp. 89-94, 2010. (29)
	G. Meditskos, N. Bassiliades, “Structural and Role-Oriented Web Service Discovery with Taxonomies in OWL-S”, IEEE Transactions on Knowledge and Data Engineering (TKDE), IEEE, 22(2), pp. 278-290, 2010. (78)
	G. Tsoumakas, I. Katakis, I. Vlahavas, “Mining Multi-label Data”, Data Mining and Knowledge Discovery Handbook, Part 6, O. Maimon, L. Rokach (Ed.), Springer, 2nd edition, pp. 667-685, 2010. (122)
	I. Katakis, G. Tsoumakas, I. Vlahavas, “Tracking Recurring Contexts using Ensemble Classifiers: An Application to Email Filtering”, Knowledge and Information Systems, Springer, 22(3), pp. 371-391, 2010. (28)
	Year Total: 21
	2009
	L. Iliadis, I. Maglogiannis, G. Tsoumakas, I. Vlahavas, M. Bramer, “Artificial Intelligence Applications and Innovations: Proceedings of the 5th IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI'2009)”, ISBN: 978-1441902207, Springer, 2009.
	N. Bassiliades, “AIAI 2009 Workshops Proceedings, Proceedings of the Workshops of the 5th IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI-2009)”, CEUR Workshop Proceedings, ISSN 1613-0073, Vol. 475, pp. 349, Thessaloniki, Greece, April 23-25, 2009.
	N. Bassiliades, I. Antoniades, E. Hatzikos, I. Vlahavas, G. Koutitas, “An Intelligent System for Monitoring and Predicting Water Quality”, Proceedings of the European conference TOWARDS eENVIRONMENT, pp. 534-542, Prague, Czech Republic, March 2009, 2009. (1)
	O. Hatzi, G. Meditskos, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “PORSCE II: Using Planning for Semantic Web Service Composition”, 3rd International Competition on Knowledge Engineering for Planning and Scheduling, ICAPS-09, Roman Bartak, Simone Frattini, Lee McCluskey (Ed.), pp. 38-45, Thessaloniki, Greece, 2009. (6)
	O. Hatzi, G. Meditskos, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “Semantic Web Service Composition Using Planning and Ontology Concept Relevance”, 2009 IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology, pp. 418-421, Milan, Italy, 2009. (5)
	G. Tsoumakas, A. Dimou, E. Spyromitros-Xioufis, V. Mezaris, I. Kompatsiaris, I. Vlahavas, “Correlation-Based Pruning of Stacked Binary Relevance Models for Multi-Label Learning”, Proceedings of the 1st International Workshop on Learning from Multi-Label Data (MLD'09), G. Tsoumakas, Min-Ling Zhang, Zhi-Hua Zhou (Ed.), pp. 101-116, Bled, Slovenia, 2009. (12)
	G. Tsoumakas, E. Loza Mencia, I. Katakis, S. Park, J. Furnkrnaz, “On the combination of two decompositive multi-label classification methods”, Workshop on Preference Learning, ECML PKDD 09, Eyke Hullermeir, Johannes Furnkranz (Ed.), pp. 114-133, Bled, Slovenia, 2009. (1)
	G. Nasierding, G. Tsoumakas, A. Kouzani, “Clustering Based Multi-Label Classification for Image Annotation and Retrieval”, 2009 IEEE International Conference on Systems, Man, and Cybernetics, IEEE, 2009.
	K. Kravari, E. Kontopoulos, N. Bassiliades, “Towards a Knowledge-based Framework for Agents Interacting in the Semantic Web”, 2009 IEEE/WIC/ACM International Conference on Intelligent Agent Technology (IAT'09), 15-18 September, Vol. 2, pp. 482-485, Milan, Italy, 2009. (2)
	K. Kravari, E. Kontopoulos, N. Bassiliades, “A Trusted Defeasible Reasoning Service for Brokering Agents in the Semantic Web”, 3rd International Symposium on Intelligent Distributed Computing (IDC 2009), 13-14 October, Springer Berlin / Heidelberg, Vol. 237, pp. 243-248, Ayia Napa, Cyprus, 2009.
	G. Valkanas, P. Natsiavas, N. Bassiliades, “A collision detection and resolution multi agent approach using utility functions”, 4th Balkan Conference in Informatics (BCI-09), P. Kefalas, D. Stamatis, C. Douligeris (Ed.), IEEE Computer Society, pp. 3-7, Thessaloniki, Greece, September 17th-19th 2009, 2009. (8)
	E. Hatzikos, J. Hatonen, N. Bassiliades, I. Vlahavas, E. Fournou, “Applying adaptive prediction to sea-water quality measurements”, Expert Systems with Applications, Elsevier, Vol. 36, Iss. 3, Part 2, pp. 6773-6779, 2009. (8)
	I. Savvas, N. Bassiliades, “A Process-Oriented Ontology-Based Knowledge Management System for Facilitating Operational Procedures in Public Administration”, Expert Systems with Applications, Elsevier, Vol. 36, Iss. 3, Part 1, pp. 4467-4478, 2009. (45)
	A. Dimou, G. Tsoumakas, V. Mezaris, I. Kompatsiaris, I. Vlahavas, “An Empirical Study Of Multi-Label Learning Methods For Video Annotation”, 7th International Workshop on Content-Based Multimedia Indexing, IEEE, Chania, Crete, 2009. (15)
	I. Partalas, G. Tsoumakas, K. Tzevanidis, I. Vlahavas, “Transferring Experience in Reinforcement Learning through Task Decomposition”, International Conference on Autonomous Agents and Multiagent Systems, 2009.
	G. Tsoumakas, I. Partalas, I. Vlahavas, “An Ensemble Pruning Primer”, Supervised and Unsupervised Methods and Their Applications to Ensemble Methods (SUEMA 2009), Oleg Okun and Giorgio Valentini (Eds.), Springer Verlag, Volume 245/2009, pp. 1-13, 2009. (11)
	A. Athanassiades, E. Kontopoulos, N. Bassiliades, “Visualizing RDF Documents”, Proceedings of the 5th IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI 2009), Springer, pp. 151-156, Thessaloniki, 2009. (1)
	E. Kargioti, E. Kontopoulos, N. Bassiliades, “OntoLife: An Ontology for Semantically Managing Personal Information”, Proceedings of the 5th IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI 2009), Springer, pp. 127-134, Thessaloniki, 2009. (3)
	I. Katakis, G. Meditskos, G. Tsoumakas, N. Bassiliades, I. Vlahavas, “On the Combination of Textual and Semantic Descriptions for Automated Semantic Web Service Classification”, Proceedings of the 5th IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI 2009), Springer, Thessaloniki, 2009. (14)
	G. Meditskos, N. Bassiliades, “Rule-based OWL Reasoning Systems: Implementations, Strengths and Weaknesses”, Handbook of Research on Emerging Rule-Based Languages and Technologies: Open Solutions and Approaches, Adrian Giurca, Dragan Gasevic, Kuldar Taveter (Ed.), IGI Global, ISBN 978-1-60566-402-6, pp. 124-148, 2009. (5)
	G. Tzanis, C. Berberidis, I. Vlahavas, “Machine Learning and Data Mining in Bioinformatics”, Handbook of Research on Innovations in Database Technologies and Applications: Current and Future Trends, L.C. Rivero, J.H. Door, V.E. Ferraggine (Ed.), IGI Global, 2009.
	I. Partalas, G. Tsoumakas, I. Vlahavas, “Pruning an Ensemble of Classifiers via Reinforcement Learning”, Neurocomputing, Elsevier, 72(7-9), pp. 1900-1909, 2009. (12)
	I. Katakis, G. Tsoumakas, E. Banos, N. Bassiliades, I. Vlahavas, “An Adaptive Personalized News Dissemination System”, Journal of Intelligent Information Systems, Springer, 32 (2), pp. 191-201, 2009. (36)
	Year Total: 23
	2008
	F. Kokkoras, E. Lampridou, K. Ntonas, I. Vlahavas, “Summarization of Multiple, Metadata Rich, Product Reviews”, Workshop on Mining Social Data (MSoDa), 18th European Conference on Artificial Intelligence (ECAI '08), Patras, Greece, 2008. (1)
	F. Kokkoras, E. Lampridou, K. Ntonas, I. Vlahavas, “MOpiS: a Multiple Opinion Summarizer”, Proc. 5th Hellenic Conference on Artificial Intelligence, LNAI 5138, J. Darzentas et al. (Ed.), Springer-Verlag Berlin Heidelberg, pp. 110-122, Syros, Greece, 2008. (7)
	N. Bassiliades, G. Governatori, A. Paschke, “Rule Representation, Interchange and Reasoning on the Web”, Proceedings of the 2008 International Symposium on Rule Interchange and Applications (RuleML-2008), Springer, LNCS, Vol. 5321, ISBN: 978-3-540-88807-9, pp. 243, Orlando, Florida, USA, 30-31 Oct., 2008.
	K. Mokos, P. Katsaros, N. Bassiliades, V. Vassiliadis, M. Perrotin, “Towards Compositional Safety Analysis via Semantic Representation of Component Failure Behaviour”, Proc. 8th Joint Conference on Knowledge - Based Software Engineering 2008 (JCKBSE 08), M. Virvou and T. Nakamura (Eds.), IOS Press, pp. 405-414, August 2008, Piraeus, Greece, 2008. (3)
	E. Kontopoulos, N. Bassiliades, G. Governatori, G. Antoniou, “Extending a Defeasible Reasoner with Modal and Deontic Logic Operators”, Proceedings of Workshop on Logics for Intelligent Agents and Multi-Agent Systems (WLIAMAS 2008) at IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology, IEEE Computer Society Press, pp. 626-629, Sydney, Australia, 2008. (1)
	I. Avguleas, K. Gkirtzou, S. Triantafilou, A. Bikakis, G. Antoniou, E. Kontopoulos, N. Bassiliades, “Visualization of Proofs in Defeasible Logic”, Proceedings of the 2008 International Symposium on Rule Interchange and Applications (RuleML-2008), Nick Bassiliades, Guido Governatori, Adrian Paschke (Ed.), Springer, LNCS, Vol. 5321, pp. 197-210, Orlando, Florida, USA, 2008. (1)
	I. Katakis, G. Tsoumakas, I. Vlahavas, “Multilabel Text Classification for Automated Tag Suggestion”, Proceedings of the ECML/PKDD 2008 Discovery Challenge, Antwerp, 2008. (38)
	G. Tzanis, I. Kavakiotis, I. Vlahavas, “Polyadenylation Site Prediction Using Interesting Emerging Pattern”, 8th IEEE International Conference on Bioinformatics and Bioengineering, IEEE, Athens, Greece, 2008. (5)
	G. Tsoumakas, I. Katakis, I. Vlahavas, “Effective and Efficient Multilabel Classification in Domains with Large Number of Labels”, Proc. ECML/PKDD 2008 Workshop on Mining Multidimensional Data (MMD'08), Antwerp, Belgium, 2008. (37)
	E. Spyromitros-Xioufis, G. Tsoumakas, I. Vlahavas, “An Empirical Study of Lazy Multilabel Classification Algorithms”, Proc. 5th Hellenic Conference on Artificial Intelligence (SETN 2008), Springer, LNAI Vol.5138, pp. 401-406, Syros, Greece, 2008. (18)
	G. Meditskos, N. Bassiliades, “Combining a DL Reasoner and a Rule Engine for Improving Entailment-based OWL Reasoning”, Proc. 7th International Semantic Web Conference (ISWC-2008), 26-30 Oct 2008, Karlsruhe, Germany, Springer, LNCS, Vol. 5318, pp. 277-292, 2008. (23)
	O. Hatzi, G. Meditskos, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “A Synergy of Planning and Ontology Concept Ranking for Semantic Web Service Composition”, 11th Ibero-American Conference on Artificial Intelligence, H. Geffner et al. (Ed.), Springer-Verlag, LNAI 5290, pp. 42-51, Lisbon, Portugal, 2008. (2)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, A. Seridou, “Visual Modeling of Defeasible Logic Rules with DR-VisMo”, International Journal of Artificial Intelligence Tools (IJAIT), World Scientific, 17(5), pp. 903-924, 2008.
	I. Partalas, I. Feneris, I. Vlahavas, “A Hybrid Multiagent Reinforcement Learning Approach using Strategies and Fusion”, International Journal of Artificial Intelligence Tools (IJAIT), World Scientific, 17 (5), pp. 945-961, 2008.
	K. Trohidis, G. Tsoumakas, G. Kalliris, I. Vlahavas, “Multilabel Classification of Music into Emotions”, Proc. 9th International Conference on Music Information Retrieval (ISMIR 2008), pp. 325-330, Philadelphia, PA, USA, 2008. (116)
	G. Tsoumakas, I. Partalas, I. Vlahavas, “A Taxonomy and Short Review of Ensemble Selection”, ECAI, Workshop on Supervised and Unsupervised Ensemble Methods and Their Applications, Patras, Greece, 2008. (10)
	I. Partalas, G. Tsoumakas, E. Hatzikos, I. Vlahavas, “Greedy Regression Ensemble Selection: Theory and an Application to Water Quality”, Information Sciences, Elsevier, 178(20), pp. 3867-3879, 2008. (13)
	G. Meditskos, N. Bassiliades, “Rule-based OWL Ontology Reasoning Using Dynamic ABOX Entailments”, 18th European Conference on Artificial Intelligence, pp. 731-732, IOS Press, pp. 731-732, 2008. (1)
	G. Meditskos, N. Bassiliades, “HOOPO: A Hybrid Object-Oriented Integration of Production Rules and OWL Ontologies”, 18th European Conference on Artificial Intelligence, pp, 729-730, IOS Press, pp. 729-730, 2008. (4)
	I. Partalas, G. Paliouras, I. Vlahavas, “Reinforcement Learning with Classifier Selection for Focused Crawling”, 18th European Conference on Artificial Intelligence, IOS Press, pp. 759-760, 2008. (1)
	I. Partalas, G. Tsoumakas, I. Vlahavas, “Focused Ensemble Selection: A Diversity-Based Method for Greedy Ensemble Selection”, 18th European Conference on Artificial Intelligence, IOS Press, pp. 117-121, Patras, Greece, 2008. (11)
	I. Katakis, G. Tsoumakas, I. Vlahavas, “An Ensemble of Classifiers for coping with Recurring Contexts in Data Streams”, 18th European Conference on Artificial Intelligence, IOS Press, pp. 763-764, Patras, Greece, 2008. (14)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “Deploying Defeasible Logic Rule Bases for the Semantic Web”, Data and Knowledge Engineering, Elsevier, 66 (1), pp. 116-146, 2008. (13)
	S. Bibi, G. Tsoumakas, I. Stamelos, I. Vlahavas, “Regression via Classification applied on Software Defect Prediction”, Expert Systems with Applications, Elsevier, 34(3), pp. 2091-2101, 2008. (16)
	I. Partalas, D. Vrakas, I. Vlahavas, “Reinforcement Learnign and Automated Planning: A Survey”, Artificial Intelligence for Advanced Problem Solving Techniques, D. Vrakas and I. Vlahavas (Eds.), IGI, pp. 148-165, 2008. (3)
	G. Meditskos, N. Bassiliades, “A Rule-based Object-Oriented OWL Reasoner”, IEEE Transactions on Knowledge and Data Engineering, IEEE, vol. 20, no. 3, pp. 397-410, 2008. (47)
	E. Kontopoulos, D. Vrakas, F. Kokkoras, N. Bassiliades, I. Vlahavas, “An Ontology-based Planning System for e-Course Generation”, Expert Systems with Applications, Elsevier, 35 (1-2), pp. 398-406, 2008. (73)
	E. Hatzikos, G. Tsoumakas, G. Tzanis, N. Bassiliades, I. Vlahavas, “An Empirical Study of Sea Water Quality Prediction”, Knowledge-Based Systems, Elsevier, 21(6), pp. 471-478, 2008. (13)
	G. Tsoumakas, I. Vlahavas, “Distributed Data Mining”, Encyclopedia of Data Warehousing and Mining - 2nd Edition, John Wang (Ed.), Idea Group Reference, pp. 709-715, 2008. (5)
	Year Total: 29
	<2008
	G. Hondris, I. Vlahavas, S. Demetriadis, “Negotiation of meaning and digital textbooks in the CLIL classroom.”, Diverse Contexts – Converging Goals, CLIL in Europe, David Marsh, Dieter Wolff (Ed.), Peter Lang Publications, pp. 319-330, 2007.
	O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “VLEPpO: A Visual Language for Problem Representation”, 26th Workshop of the UK Planning and Scheduling Special Interest Group, Roman Bartak (Ed.), pp. 60 - 66, Prague, Czech Republic, 2007. (1)
	D. Vrakas, I. Vlahavas, “Eds”, Artificial Intelligence for Advanced Problem Solving Techniques, IGI, 2007. (13)
	O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “Visual Representation of Web Service Composition Problems through VLEPpO”, International Workshop on Intelligent Web Based Tools, 19th IEEE International conference on Tools with Artificial Intelligence, Juan D. Velasquez (Ed.), pp. 42 - 49, Patras, Greece, 2007. (1)
	G. Meditskos, N. Bassiliades, “Object-Oriented Similarity Measures for Semantic Web Service Matchmaking”, Proc. 5th IEEE European Conf. on Web Services (ECOWS 2007), Halle (Saale), Germany, November 26-28, IEEE, 2007. (12)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “Visual Stratification of Defeasible Logic Rule Bases”, Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence (ICTAI), IEEE, pp. 238-245, Patras, Greece, 2007.
	I. Partalas, I. Feneris, I. Vlahavas, “Multi-Agent Reinforcement Learning using Strategies and Voting”, Proceedings of the 19th IEEE International Conference on Tools with Artificial Intelligence (ICTAI), (to be presented), IEEE, 2007. (2)
	G. Tzanis, I. Vlahavas, “Accurate Classification of SAGE Data Based on Frequent Patterns of Gene Expression”, Proceedings of the IEEE International Conference on Tools with Artificial Intelligence (ICTAI 2007), IEEE, Patras, Greece, 2007. (1)
	G. Tzanis, I. Vlahavas, “Mining High Quality Clusters of SAGE Data”, Proceedings of the 2nd VLDB Workshop on Data Mining in Bioinformatics, Vienna, Austria, 2007.
	G. Tsoumakas, I. Vlahavas, “Random k-Labelsets: An Ensemble Method for Multilabel Classification”, Proceedings of the 18th European Conference on Machine Learning (ECML 2007), J.N. Kok, J. Koronacki, R.L. de Mantaras, S. Matwin, D. Mladenic, A. Skowron (Ed.), Springer Verlag, LNAI 4701, pp. 406-417, Warsaw, Poland, 2007. (111)
	A. Nestoras, S. Demetriadis, N. Bassiliades, “LPMO: An Ontology for Learning Problems”, 3rd Balkan Conference in Informatics (BCI'2007), to be presented, 27-29 Sep. 2007, Sofia, Bulgaria, 2007.
	A. Papakonstantinou, S. Demetriadis, N. Bassiliades, “Ontology Development for Computer Supported Collaborative Learning Scripts”, 3rd Balkan Conference in Informatics (BCI'2007), to be presented, 27-29 Sep. 2007, Sofia, Bulgaria, 2007. (3)
	A. Symeonidis, G. Meditskos, E. Kontopoulos, N. Bassiliades, “A Web Service Reasoner for the Semantic Web”, Proceedings of the 2nd Annual SEERC Doctoral Student Conference, Thessaloniki, Greece, 2007. (1)
	G. Tzanis, C. Berberidis, I. Vlahavas, “MANTIS: A Data Mining Methodology for Effective Translation Initiation Site Prediction”, Proceedings of the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, IEEE, Lyon, France, 2007.
	I. Partalas, E. Hatzikos, G. Tsoumakas, I. Vlahavas, “Ensemble Selection for Water Quality Prediction”, Proceedings of the 10th International Conference on Engineering Applications of Neural Networks, Thessaloniki, 2007. (3)
	F. Kokkoras, N. Bassiliades, I. Vlahavas, “Cooperative CG-Wrappers for Web Content Extraction”, Proc. 15th International Conference on Conceptual Structures (ICCS '07), U. Priss, S. Polovina, and R. Hill (Eds.), Springer-Verlag Berlin Heidelberg, LNAI 4604, pp. 476-479, Sheffield, UK, 2007.
	G. Meditskos, N. Bassiliades, “A Semantic Web Service Discovery and Composition Prototype Framework Using Production Rules”, OWL-S: Experiences and Directions, Innsbruck, Austria, 2007. (8)
	T. Skylogiannis, G. Antoniou, N. Bassiliades, G. Governatori, A. Bikakis, “DR-NEGOTIATE – A System for Automated Agent Negotiation with Defeasible Logic-Based Strategies”, Data and Knowledge Engineering, Elsevier, 63(2), pp. 362-380, 2007. (29)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “Visual Development of Defeasible Logic Rules for the Semantic Web”, Visual Languages for Interactive Computing: Definitions and Formalizations, F. Ferri (Ed.), Idea Group Publishing, pp. 273-301, 2007.
	D. Vrakas, O. Hatzi, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “A Visual Programming Tool for Designing Planning Problems for Semantic Web Service Composition”, Visual Languages for Interactive Computing: Definitions and Formalizations, F. Ferri (Ed.), Idea Group Publishing, pp. 302 - 326, 2007. (1)
	E. Hatzikos, N. Bassiliades, L. Asmanis, I. Vlahavas, “Monitoring Water Quality through a Telematic Sensor Network and a Fuzzy Expert System”, Expert Systems, Blackwell, 24(3), pp. 143-161, 2007. (16)
	D. Vrakas, G. Tsoumakas, F. Kokkoras, N. Bassiliades, I. Vlahavas, D. Anagnostopoulos, “PASER: A Curricula Synthesis System based on Automated Problem Solving”, International Journal on Teaching and Case Studies, Special Issue on "Information Systems: The New Research Agenda, the Emerging Curriculum and the New Teaching Paradigm", Inderscience, Vol. 1, Nos. 1/2, pp. 159-170, 2007. (17)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “A Visualization Algorithm for Defeasible Logic Rule Bases over RDF Data”, 1st International Conference on Web Reasoning and Rule Systems (RR 2007), Springer, LNCS 4524, pp. 367-369, Innsbruck, Austria, 7-8 June, 2007.
	N. Bassiliades, G. Antoniou, G. Governatori, “Proof Explanation in the DR-DEVICE System”, 1st International Conference on Web Reasoning and Rule Systems (RR 2007), Springer-Verlag, LNCS 4524, pp. 249-258, Innsbruck, Austria, 7-8 June 2007, 2007. (10)
	E. Kontopoulos, K. Kravari, N. Bassiliades, “Object-Oriented Modelling of RDF Schema Ontologies”, 11th Panhellenic Conference on Informatics (PCI 2007), pp. 479-489, Patras, Greece, 18-20 May, 2007. (1)
	C. Berberidis, I. Vlahavas, “Detection and Prediction of Rare Events in Transaction Databases”, International Journal on Artificial Intelligence Tools, World Scientific Publishing Company, 16(5), pp. 829 - 848, 2007.
	G. Tzanis, C. Berberidis, “Mining for Mutually Exclusive Items in Transaction Databases”, International Journal of Data Warehousing and Mining, David Taniar (Ed.), Idea Group Publishing, 3(3), 2007. (3)
	G. Tsoumakas, I. Katakis, “Multi Label Classification: An Overview”, International Journal of Data Warehousing and Mining, David Taniar (Ed.), Idea Group Publishing, 3(3), pp. 1-13, 2007. (240)
	G. Tsoumakas, I. Vlahavas, “An interoperable and scalable Web-based system for classifier sharing and fusion”, Expert Systems with Applications, Elsevier, 33(3), pp. 716-724, 2007. (5)
	G. Antoniou, T. Skylogiannis, A. Bikakis, M. Doerr, N. Bassiliades, “DR-BROKERING: A Semantic Brokering System”, Knowledge-Based Systems, Elsevier, Vol. 20, No. 1, pp. 61-72, 2007. (11)
	G. Tzanis, C. Berberidis, I. Vlahavas, “A Novel Data Mining Approach for the Accurate Prediction of Translation Initiation Sites”, 7th International Symposium on Biological and Medical Data Analysis, Nicos Maglaveras et al. (Ed.), Springer-Verlag, pp. 92-103, Thessaloniki, Greece, 2006. (1)
	G. Tzanis, C. Berberidis, I. Vlahavas, “On the Discovery of Mutually Exclusive Items in a Market Basket Database”, 2nd ADBIS Workshop on Data Mining and Knowledge Discovery, pp. 1-12, Thessaloniki, Greece, 2006. (1)
	E. Banos, I. Katakis, N. Bassiliades, G. Tsoumakas, I. Vlahavas, “PersoNews: A Personalized News Reader Enhanced by Machine Learning and Semantic Filtering”, 5th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE 2006), R. Meersman, Z. Tari (Ed.), Springer-Verlag, pp. 975-982, Montpellier, France, 2006. (24)
	I. Katakis, G. Tsoumakas, I. Vlahavas, “Dynamic Feature Space and Incremental Feature Selection for the Classification of Textual Data Streams”, ECML/PKDD-2006 International Workshop on Knowledge Discovery from Data Streams, pp. 107-116, Berlin, Germany, 2006. (14)
	G. Meditskos, E. Kontopoulos, N. Bassiliades, “Querying and Visualizing the Semantic Web”, Proceedings of the 1st Annual SEERC Doctoral Student Conference, Thessaloniki, Greece, 2006.
	G. Tzanis, I. Katakis, I. Partalas, I. Vlahavas, “Modern Applications of Machine Learning”, Proceedings of the 1st Annual SEERC Doctoral Student Conference, Thessaloniki, Greece, 2006.
	G. Tsoumakas, I. Katakis, I. Vlahavas, “A Review of Multi-Label Classification Methods”, 2nd ADBIS Workshop on Data Mining and Knowledge Discovery, pp. 99-109, 2006. (9)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “Visualizing Defeasible Logic Rules for the Semantic Web”, 1st Asian Semantic Web Conference (ASWC'06), Springer-Verlag, LNCS 4185, pp. 278-292, Beijing, China, 3-7 September, 2006. (4)
	E. Kontopoulos, N. Bassiliades, G. Antoniou, “A Non-Monotonic Reasoning System for RDF Metadata”, Proc. 11th Int. Workshop on Non-Monotonic Reasoning, pp. 285-293, Lake District area, UK, 30 May - 1 June, 2006.
	G. Meditskos, N. Bassiliades, “O-DEVICE: An Object-Oriented Knowledge Base System for OWL Ontologies”, Proc. 4th Hellenic Conference on Artificial Intelligence (SETN-06), G. Antoniou, G. Potamias, D. Plexousakis, C. Spyropoulos (Ed.), Springer-Verlag, LNAI 3955, pp. 256-266, Heraklion, Crete, 18-20 May, 2006. (3)
	E. Kontopoulos, N. Bassiliades, “Graphical Representation of Defeasible Logic Rules using Digraphs”, Proc. 4th Hellenic Conference on Artificial Intelligence (SETN-06), G. Antoniou, G. Potamias, D. Plexousakis, C. Spyropoulos (Ed.), Springer-Verlag, LNAI 3955, pp. 529-533, Heraklion, Crete, 18-20 May, 2006. (3)
	G. Tzanis, I. Vlahavas, “Prediction of Translation Initiation Sites Using Classifier Selection”, Proc. 4th Hellenic Conference on Artificial Intelligence (SETN-06), G. Antoniou, G. Potamias, D. Plexousakis, C. Spyropoulos (Ed.), Springer-Verlag, LNAI 3955, pp. 367-377, Heraklion, Crete, 18-20 May, 2006. (4)
	I. Partalas, G. Tsoumakas, I. Katakis, I. Vlahavas, “Ensemble Pruning using Reinforcement Learning”, Proc. 4th Hellenic Conference on Artificial Intelligence (SETN-06), G. Antoniou, G. Potamias, D. Plexousakis, C. Spyropoulos (Ed.), Springer-Verlag, LNAI 3955, pp. 301-310, Heraklion, Crete, 18-20 May, 2006. (11)
	S. Bibi, G. Tsoumakas, I. Stamelos, I. Vlahavas, “Software Defect Prediction Using Regression via Classification”, Proc. 4th ACS/IEEE International Conference on Computer Systems and Applications, AICCSA '06, (accepted for presentation), pp. 330- 336, 2006. (10)
	D. Vrakas, F. Kokkoras, N. Bassiliades, I. Vlahavas, “Towards Automatic Synthesis of Educational Resources through Automated Planning”, Proc. 4th Hellenic Conference on Artificial Intelligence (SETN-06), Grigoris Antoniou, George Potamias, Costas Spyropoulos, Dimitris Plexousakis (Ed.), Springer Berlin, LNAI 3955, pp. 421-431, Heraklion, Crete, 18-20 May, 2006. (2)
	I. Katakis, G. Tsoumakas, I. Vlahavas, “Email Mining: Emerging Techniques for Email Management”, Web Data Management Practices: Emerging Techniques and Technologies, Athena Vakali, George Pallis (Ed.), Idea Group Publishing, pp. 219-240, 2006. (12)
	N. Bassiliades, G. Antoniou, I. Vlahavas, “A Defeasible Logic Reasoner for the Semantic Web”, International Journal on Semantic Web and Information Systems, Amit Sheth , Miltiadis D. Lytras (Ed.), IDEA Group Publishing, Vol. 2, No. 1, pp. 1-41, 2006. (41)
	I. Sakellariou, I. Vlahavas, I. Futo, Z. Pasztor, J. Szeredi, “Communicating Sequential Processes for Distributed Constraint Solving”, Information Sciences, Elsevier, 176(5), pp. 490-521, 2006. (1)
	N. Bassiliades, I. Vlahavas, “R-DEVICE: An Object-Oriented Knowledge Base System for RDF Metadata”, International Journal on Semantic Web and Information Systems, Amit Sheth , Miltiadis D. Lytras (Ed.), Idea Group, Vol. 2, No. 2, pp. 24-90, 2006. (3)
	S. Konias, G. Gogou, P. Bamidis, I. Vlahavas, N. Maglaveras, “Predicting missing values in a home care database using an adaptive uncertainty rule method.”, Methods Inf Med, 44 (5), pp. 639-646, 2005.
	S. Konias, I. Chouvarda, I. Vlahavas, N. Maglaveras, “A novel approach for incremental uncertainty rule generation from databases with missing values handling: Application to dynamic medical databases.”, Med Inform Internet Med, 30 (3), pp. 211-225, 2005.
	M. Golias, D. Angelides, S. Marnas, D. Vrakas, “Use of Multimedia and the World Wide Web in Civil Engineering Learnin”, Journal of Professional Issues in Engineering Education and Practice, American Society for Civil Engineering, 131 (2), pp. 129-137, 2005. (7)
	I. Sakellariou, G. Eleftherakis, I. Vlahavas, P. Kefalas, “Animating Formal Models in a Communicating Sequential Process Platform”, 10th Panhellenic Conference on Informatics, Local Proceedings, P. Bozanis and E. Houstis (Eds.), pp. 174-183, 2005.
	E. Hatzikos, L. Anastasakis, N. Bassiliades, I. Vlahavas, “Applying neural networks with active neurons to sea-water quality measurements”, 2nd Int. Scientific Conf. on Computer Science, Plamenka Borovska, Sofoklis Christofordis (Ed.), IEEE Computer Society, Bulgarian Section, 30th Sep-2nd Oct 2005, Halkidiki, Greece, 2005. (14)
	N. Bassiliades, “Semantic Web: Vision and Technologies”, 2nd Int. Scientific Conf. on Computer Science, Plamenka Borovska, Sofoklis Christofordis (Ed.), IEEE Computer Society, Bulgarian Section, 30th Sep-2nd Oct 2005, Halkidiki, Greece, 2005. (1)
	N. Bassiliades, E. Kontopoulos, G. Antoniou, “VDR-DEVICE: A Visual Editor for a Defeasible Logic Rule-ML-compatible Rule Language”, 4th International Semantic Web Conference (ISWC2005), Demo/Poster Session, Edward Curry (Ed.), Galway, Ireland, 6-10 November, 2005.
	G. Meditskos, N. Bassiliades, “Towards an Object-Oriented Reasoning System for OWL”, Int. Workshop on OWL Experiences and Directions, B. Cuenca Grau, I. Horrocks, B. Parsia, P. Patel-Schneider (Ed.), 11-12 Nov. 2005, Galway, Ireland, 2005. (6)
	D. Vrakas, I. Vlahavas, “Hybrid AcE: Combining Search Directions for Heuristic Planning”, Computational Intelligence, Blackwell, 21(3), pp. 306-331, 2005. (3)
	N. Bassiliades, E. Kontopoulos, G. Antoniou, “A Visual Environment for Developing Defeasible Rule Bases for the Semantic Web”, Proc. International Conference on Rules and Rule Markup Languages for the Semantic Web (RuleML-2005), A. Adi, S. Stoutenburg, S. Tabet (Ed.), Springer-Verlag, LNCS 3791, pp. 172-186, Galway, Ireland, 10-12 November, 2005. (6)
	G. Antoniou, T. Skylogiannis, A. Bikakis, N. Bassiliades, “A Deductive Semantic Brokering System”, 9th International Conference on Knowledge-Based Intelligent Information and Engineering Systems (KES 2005), R. Khosla, R. J. Howlett, L. C. Jain (Ed.), Springer-Verlag, LNCS 3682, pp. 746-752, Melbourne, Australia, September 14-16, 2005.
	D. Vrakas, I. Vlahavas, “A Visualization Environment for Planning”, International Journal on Artificial Intelligence Tools, World Scientific, Vol. 14(6), pp. 975-998, 2005. (2)
	S. Diplaris, G. Tsoumakas, P. Mitkas, I. Vlahavas, “Protein Classification with Multiple Algorithms”, 10th Panhellenic Conference on Informatics (PCI 2005), P. Bozanis and E.N. Houstis (Eds.), Springer-Verlag, LNCS 3746, pp. 448-456, Volos, Greece, 11-13 November, 2005. (39)
	N. Bassiliades, E. Kontopoulos, G. Antoniou, I. Vlahavas, “A Graphical Rule Authoring Tool for Defeasible Reasoning in the Semantic Web”, 10th Panhellenic Conference on Informatics (PCI 2005), P. Bozanis and E.N. Houstis (Eds.), Springer-Verlag, LNCS 3746, Volos, Greece, 11-13 November, 2005.
	I. Katakis, G. Tsoumakas, I. Vlahavas, “On the Utility of Incremental Feature Selection for the Classification of Textual Data Streams”, 10th Panhellenic Conference on Informatics (PCI 2005), P. Bozanis and E.N. Houstis (Eds.), Springer-Verlag, LNCS 3746, pp. 338-348, Volos, Greece, 11-13 November, 2005. (7)
	G. Tzanis, C. Berberidis, A. Alexandridou, I. Vlahavas, “Improving the Accuracy of Classifiers for the Prediction of Translation Initiation Sites in Genomic Sequences”, 10th Panhellenic Conference on Informatics (PCI'2005), P. Bozanis and E.N. Houstis (Eds.), Springer-Verlag, LNCS 3746, pp. 426-436, Volos, Greece, 11-13 November, 2005. (6)
	C. Berberidis, G. Tzanis, I. Vlahavas, “Mining for Contiguous Frequent Itemsets in Transaction Databases”, IEEE 3rd International Workshop on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS'2005), IEEE, pp. 679-685, Sofia, Bulgaria, 2005. (1)
	G. Tzanis, C. Berberidis, I. Vlahavas, “Biological Data Mining”, Encyclopedia of Database Technologies and Applications, Laura C. Rivero, Jorge H. Doorn and Viviana E. Ferraggine (Eds.), Idea Group Publishing, pp. 35-41, 2005. (2)
	G. Tsoumakas, L. Angelis, I. Vlahavas, “Selective Fusion of Heterogeneous Classifiers”, Intelligent Data Analysis, IOS Press, 9(6), pp. 511-525, 2005. (4)
	I. Vlahavas, D. Vrakas, “Eds.”, Intelligent Techniques for Planning, IDEA Group Publishing, 2005. (6)
	G. Antoniou, T. Skylogiannis, A. Bikakis, N. Bassiliades, “A Semantic Brokering System for the Tourism Domain”, Journal of Information Technology and Tourism, special issue on "Semantic Web Technologies and Applications", Vol. 7, No. 3-4, pp. 183-200, 2005. (9)
	T. Skylogiannis, G. Antoniou, N. Bassiliades, G. Governatori, “DR-NEGOTIATE – A System for Automated Agent Negotiation with Defeasible Logic-Based Strategies”, IEEE International Conference on E-Technology, E-Commerce and E-Service, W.K.W. Cheung, J. Hsu (Ed.), IEEE, pp. 44-49, 29/3 - 1/4/2005, Hong Kong, China, 2005. (19)
	G. Antoniou, T. Skylogiannis, A. Bikakis, N. Bassiliades, “DR-BROKERING – A Defeasible Logic-Based System for Semantic Brokering”, IEEE International Conference on E-Technology, E-Commerce and E-Service, W.K.W. Cheung, J. Hsu (Ed.), IEEE, pp. 414-417, 29/3 - 1/4/2005, Hong Kong, China, 2005.
	D. Vrakas, G. Tsoumakas, N. Bassiliades, I. Vlahavas, “HAPrc: An Automatically Configurable Planning System”, AI Communications, 18 (1), pp. 41-60, 2005. (3)
	C. Berberidis, I. Vlahavas, “Mining for weak periodic signals in time series databases”, Intelligent Data Analysis, Dr. F. Famili (Ed.), IOS Press, 9(1), 2005.
	D. Vrakas, G. Tsoumakas, N. Bassiliades, I. Vlahavas, “Machine Learning for Adaptive Planning”, Intelligent Techniques for Planning, I. Vlahavas and D. Vrakas (Eds.), IDEA GROUP PUBLISHING, Ch. 3, pp. 90-120, 2005. (3)
	N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “Web Service Composition Using a Deductive XML Rule Language”, Distributed and Parallel Databases, Ahmed K. Elmagarmid (Ed.), Kluwer, Vol. 17, No. 2, pp. 135-178, 2005. (7)
	F. Kokkoras, N. Bassiliades, I. Vlahavas, “Aggregator: A Knowledge based Comparison Chart Builder for e-Shopping”, Intelligent Knowledge-Based Systems: Business and Technology in the New Millennium, C.T. Leondes (Ed.), Kluwer Academic Publishers, Vol. 1: Knowledge-Based Systems, Ch. 6, pp. 140-163, 2005.
	I. Sakellariou, I. Vlahavas, “Simple Distributed Filtering on a CLP Platform”, 3rd Hellenic Conference on Artificial Intelligence (Companion Volume), G. Vouros and T. Panagiotopoulos (Eds.), pp. 318-327, 2004.
	S. Konias, N. Maglaveras, I. Vlahavas, “Predicting Missing Parts in Time Series Using Uncertainty Theory”, Biological and Medical Data Analysis: 5th International Symposium, ISBMDA 2004, J. M. Barreiro, F. Martin-Sanchez, V. Maojo, et al. (Ed.), Springer-Verlag, 3337, pp. 313-321, Barcelona, Spain, November 18-19, 2004, 2004. (1)
	T. Skylogiannis, G. Antoniou, N. Bassiliades, “A System for Automated Agent Negotiation with Defeasible Logic-Based Strategies – Preliminary Report”, Third International Workshop on Rules and Rule Markup Languages for the Semantic Web (RuleML 2004), G. Antoniou, H. Boley (Ed.), Springer-Verlag, LNCS 3323, pp. 205-213, Hiroshima, Japan, November 8, 2004, 2004. (9)
	N. Bassiliades, G. Antoniou, I. Vlahavas, “DR-DEVICE: A Defeasible Logic RDF Rule Language”, 3rd International Semantic Web Conference (ISWC2004), Demonstrations Program, Hiroshima, Japan, 7-11 Nov. 2004, 2004. (1)
	C. Berberidis, L. Angelis, I. Vlahavas, “PREVENT: An algorithm for mining inter-transactional patterns for the prediction of rare events”, 2nd European Starting AI Researcher Symposium (STAIRS' 04), IOS Press, pp. 128-136, Valencia, Spain, 2004. (2)
	N. Bassiliades, G. Antoniou, I. Vlahavas, “A Defeasible Logic Reasoner for the Semantic Web”, Third International Workshop on Rules and Rule Markup Languages for the Semantic Web (RuleML 2004), G. Antoniou, H. Boley (Ed.), Springer-Verlag, LNCS 3323, pp. 49-64, Hiroshima, Japan, 8 Nov. 2004, 2004. (19)
	N. Bassiliades, I. Vlahavas, “R-DEVICE: A Deductive RDF Rule Language”, Third International Workshop on Rules and Rule Markup Languages for the Semantic Web (RuleML 2004), G. Antoniou, H. Boley (Ed.), Springer-Verlag, LNCS 3323, pp. 65-80, Hiroshima, Japan, 8 Nov. 2004, 2004. (5)
	N. Bassiliades, G. Antoniou, I. Vlahavas, “DR-DEVICE: A Defeasible Logic System for the Semantic Web”, Second International Workshop on Principles and Practice of Semantic Web Reasoning (PPSWR04), Sebastian Schaffert (Ed.), Springer-Verlag, LNCS 3208, pp. 134-148, St Malo, France, 6-10 Sept., 2004. (37)
	G. Tsoumakas, G. Meditskos, D. Vrakas, N. Bassiliades, I. Vlahavas, “Web Services for Adaptive Planning”, Proc. ECAI04 Workshop on Planning and Scheduling: Bridging Theory to Practice, D. Borrajo (Ed.), IOS Press, Valencia Spain, 2004. (4)
	G. Tsoumakas, I. Katakis, I. Vlahavas, “Effective Voting of Heterogeneous Classifiers”, Proc. European Conference on Machine Learning, ECML 04, Jean-Francois Boulicaut, Floriana Esposito, Fosca Giannoti, Dino Pedreschi (Ed.), LNAI 3201, pp. 465-476, Pisa, Italy, 2004. (28)
	C. Berberidis, L. Angelis, I. Vlahavas, “Inter-Transaction Association Rules Mining for Rare Events Prediction”, Proc. 3rd Hellenic Conference on Artificial Intellligence (SETN '04), Samos, Greece, 2004. (3)
	S. Demetriadis, I. Vlahavas, “Institutional efforts in tertiary education for promoting the integration of technology in instruction: a case study”, Proc. 5th International Conference on Information and Communication Technologies in Education (ICICTE), July 1-3, 2004, Samos, Greece, 2004.
	G. Tsoumakas, D. Vrakas, N. Bassiliades, I. Vlahavas, “Lazy Adaptive Multicriteria Planning”, Proc. 16th European Conference on Artificial Intelligence, ECAI 2004, R. Lopez de Mantaras and L. Saitta (Eds.), IOS Press, pp. 693-697, Valencia, Spain, 2004. (8)
	F. Kokkoras, N. Bassiliades, I. Vlahavas, “Modelling Information Extraction Wrappers with Conceptual Graphs”, Proc. (2nd Volume) 3rd Panhellenic Conference on Artificial Intelligence (SETN'04), Zitis Publications, ISBN 960-431-910-8, 5-8 May 2004, Samos, Greece, 2004. (2)
	I. Sakellariou, I. Vlahavas, “Distributed Singleton Consistency”, Journal of Experimental and Theoretical Artificial Intelligence, Taylor and Francis, 16(2), pp. 107-124, 2004.
	G. Tsoumakas, D. Vrakas, N. Bassiliades, I. Vlahavas, “Using the k-nearest problems for adaptive multicriteria planning”, Proc. 3rd Hellenic Conference on Artificial Intellligence (SETN '04), G. Vouros and T. Panayiotopoulos (Eds.), Springer-Verlag, LNAI 3025, pp. 132-141, Samos, Greece, 2004. (1)
	G. Tsoumakas, N. Bassiliades, I. Vlahavas, “A Knowledge-based Web Information System for the Federation of Distributed Classifiers”, Web Information Systems, D. Taniar and W. Rahayu (Eds.), Idea-Group Publishing, Chapter 8, pp. 271-308, 2004. (5)
	G. Tsoumakas, L. Angelis, I. Vlahavas, “Clustering Classifiers for Knowledge Discovery from Physically Distributed Databases”, Data and Knowledge Engineering, Elsevier, 49(3), pp. 223-242, 2004. (29)
	I. Vlahavas, “Preface of Special Issue on Knowledge Discovery from Distributed Information Sources”, Information Sciences, Elsevier, 155(3-4), pp. 179-180, 2003.
	D. Vrakas, I. Vlahavas, “ViTAPlan: A Visual Tool for Adaptive Planning”, Proceedings of the 9th Panhellenic Conference on Informatics, Thessaloniki, Greece, 2003. (4)
	D. Vrakas, I. Vlahavas, “A Graphical Interface for Adaptive Planning”, Proceedings of the Doctoral Consortium of the 13th International Conference on Automated Planning and Scheduling, AAAI, Trento, Italy, 2003.
	C. Berberidis, I. Vlahavas, “Periodicity Mining in Industrial Data: A Real World Example on Power Data”, First International Conference for Mathematics and Informatics for Industry (MII2003), Thessaloniki, 2003.
	N. Bassiliades, I. Vlahavas, “Capturing RDF Descriptive Semantics in an Object Oriented Knowledge Base System”, Proc. 12th Int. WWW Conf. (WWW2003), ACM, CDROM (Poster), Budapest, Hungary, May 2003, 2003. (6)
	N. Bassiliades, I. Vlahavas, “A Knowledge-based Framework for Building Web Service Domains”, 9th Panhellenic Conference on Informatics (PCI'2003), pp. 331-345, Thessaloniki, Greece, November 2003, 2003.
	F. Kokkoras, I. Vlahavas, “Metadata Aware Peer-to-Peer Agents for the e-Learner”, A "Hercma03" Symposium on "AI Techniques in e-Learning", accepted for publication, Athens, Greece, 2003.
	I. Sakellariou, F. Kokkoras, I. Vlahavas, “Applying a Distributed CLP Platform to a Workforce Management Problem”, Proc. 12th Conference on Intelligent Systems Application to Power Systems (ISAP '03), (electronic proceedings), Greece, 2003. (1)
	N. Bassiliades, I. Vlahavas, A. Elmagarmid, E. Houstis, “Interbase-KB: A Knowledge-based Multidatabase Sustem for Data Warehousing”, IEEE Transactions on Knowledge and Data Engineering, Vol. 15, No. 5, pp. 1188-1205, 2003. (11)
	D. Vrakas, G. Tsoumakas, N. Bassiliades, I. Vlahavas, “Learning Rules for Adaptive Planning”, Proc. 13th International Conference on Automated Planning and Scheduling (ICAPS '03), pp. 82-91, Trento, Italy, June 2003, 2003. (17)
	S. Demetriadis, A. Barbas, A. Molohides, G. Palaigeorgiou, D. Psillos, I. Vlahavas, L. Tsoukalas, A. Pombortsis, “Cultures in Negotiation: Teachers' Acceptance/Resistance Attitudes Considering the Infusion of Technology into Schools”, Computers and Education, Elsevier, 41 (1), pp. 19-37, 2003. (31)
	F. Kokkoras, D. Sampson, I. Vlahavas, “A Knowledge Based Approach on Educational Metadata Use”, 8th Panhellenic Conference on Informatics, PCI 2001. Nicosia, Cyprus, November 8-10, 2001, Revised Selected Papers, Y. Manolopoulos, S. Evripidou and A. Kakas (Eds.), Springer-Verlag, LNCS 2563, pp. 201-216, 2003. (1)
	N. Bassiliades, I. Vlahavas, D. Sampson, “Using Logic for Querying XML Data”, Web Powered Databases, D. Taniar and W. Rahayu (Eds.), IDEA Group Publishing, Ch. 1, pp. 1-35, 2003.
	N. Bassiliades, F. Kokkoras, I. Vlahavas, D. Sampson, “An Intelligent Educational Metadata Repository”, Intelligent Systems, Techniques and Applications, C.T. Leondes (Ed.), CRC Press, Vol. 4, Ch.12, pp. 297-337, 2003. (13)
	I. Refanidis, I. Vlahavas, “Multiobjective Heuristic State-Space Planning”, Artificial Intelligence, Elsevier, Vol. 145, Issues 1-2, pp. 1-32, 2003. (2)
	I. Vlahavas, C. Spyropoulos (eds.), “Methods and Applications of Artificial Intelligence”, LNAI, Springer - Verlag, 2308, 2002.
	D. Vrakas, G. Tsoumakas, I. Vlahavas, “Towards Adaptive Heuristic Planning through Machine Learning”, Proc. 21st Workshop of the UK Planning and Scheduling Special Interest Group (PlanSIG '02), 2002. (3)
	I. Vlahavas, P. Kefalas, N. Bassiliades, I. Refanidis, F. Kokkoras, I. Sakellariou, “Artificial Intelligence (in Greek - Τεχνητή Νοημοσύνη)”, Book, Gartaganis Publications, ISBN 960-7013-28-X, 2002. (14)
	N. Bassiliades, I. Vlahavas, “Intelligent Querying of Web Documents Using a Deductive XML Repository”, Proc. 2nd Hellenic Conference on AI (SETN '02), I. Vlahavas, C. Spyrolpoulos (Ed.), Springer-Verlag, LNAI 2308, pp. 437-448, 2002. (4)
	I. Vlahavas, N. Bassiliades, I. Sakellariou, et al., “ExperNet: An Intelligent Multi-Agent System for WAN Managemen”, IEEE Intelligent Systems, Vol. 17, No. 1, pp. 62-72, 2002. (18)
	I. Vlahavas, “MACLP: Multi Agent Constraint Logic Programming”, Information Sciences, Elsevier, Vol. 144 (1-4), pp. 127-142, 2002. (3)
	F. Kokkoras, H. Jiang, I. Vlahavas, A. Elmagarmid, E. Houstis, W. Aref, “Smart Video Text: A Conceptual Graph based Video Data Model”, ACM Multimedia Systems Journal, ACM - Springer, Vol. 8, No 4, pp. 328-338, 2002. (26)
	I. Refanidis, I. Vlahavas, “The MO-GRT System: Heuristic Planning with Multiple Criteria”, Proc. AIPS 2002 Workshop on Planning and Scheduling with Multiple Criteria, 2002. (1)
	C. Berberidis, A. Walid, M. Atallah, I. Vlahavas, A. Elmagarmid, “Multiple and Partial Periodicity Mining in Time Series Databases”, Proc. 15th European Conference on Artificial Intelligence (ECAI '02), Frank Van Harmelen (Ed.), IOS Press, pp. 370-374, Lyon, France, 2002. (4)
	G. Tsoumakas, I. Vlahavas, “Effective Stacking of Distributed Classifiers”, Proc. 15th European Conference on Artificial Intelligence (ECAI '02), Frank van Harmelen (Ed.), IOS Press, pp. 340-344, 2002. (3)
	I. Vlahavas, I. Sakellariou, I. Futo, Z. Pasztor, J. Szeredi, “CSPCONS: A Communicating Sequential Prolog with Constraints”, Proc. 2nd Hellenic Conference on AI (SETN '02), Springer-Verlag, LNAI 2308, pp. 72-84, 2002.
	G. Tsoumakas, I. Vlahavas, “Distributed Data Mining of Large Classifier Ensembles”, Proc. (companion volume) 2nd Hellenic Conference on AI (SETN '02), I. Vlahavas, C. Spyropoulos (Ed.), pp. 249-255, Thessaloniki, Greece, 2002. (10)
	D. Sampson, V. Papaioannou, N. Bassiliades, I. Vlahavas, “An Educational Metadata Management System using a deductive object-oriented database approach”, Proc. ED-MEDIA World Conference on Educational Multimedia, Hypermedia and Telecommunications, pp. 1724-1728, 2002. (1)
	F. Kokkoras, I. Vlahavas, “eLPA: An e-Learner's Personal Assistant”, Proc. ICCS'02 Workshop on Applications of Conceptual Graphs, (electronic proceedings), Borovets, Bulgaria, 2002. (2)
	C. Berberidis, I. Vlahavas, W. Aref, M. Atallah, A. Elmagarmid, “On the Discovery of Weak Periodicities in Large Time Series”, Proc. 6th European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD '02), Springer-Verlag, LNAI 2431, pp. 51-61, 2002. (13)
	D. Vrakas, I. Vlahavas, “A Heuristic for Planning based on Action Evaluation”, Proc. 10th International Conference on Artificial Intelligence: Methodology, Systems, Applications (AIMSA '02), Springer-Verlag, LNAI 2443, pp. 61-70, 2002.
	D. Vrakas, I. Vlahavas, “Bi-Directional Heuristic Planning in State-Spaces”, Proc. Workshop on Education of Informaticians and Industrial Mathematicians: New Challenges and Needs, pp. 217-228, 2001. (1)
	I. Refanidis, I. Vlahavas, “Framework for Multi - Criteria Plan Evaluation in Heuristic State-Space Planning”, Proc. IJCAI'01 Workshop on planning with Resourses, 2001. (2)
	G. Tsoumakas, I. Vlahavas, “Land Evaluation: An Artificial Intelligence Approach”, Environmental Information Systems in Industry and Public Administration, C. Rautenstrauch and S. Patig (Eds.), IDEA Group Publishing, Ch. 9, pp. 158-166, 2001. (1)
	N. Bassiliades, I. Vlahavas, F. Kokkoras, “Knowledge Management and Artificial Intelligence”, Proc. Workshop on Education of Informaticians and Industrial Mathematicians: New Challenges and Needs, pp. 31-49, 2001.
	I. Refanidis, N. Bassiliades, I. Vlahavas, “AI Planning for Transportation Logistics”, Proc. 17th International Logistics Conference, pp. 241-248, Thessaloniki, October 2001, 2001. (2)
	V. Dimitroula, N. Bassiliades, I. Vlahavas, S. Dimitrakos, “FUNAGES: An Educational Expert System for Fundus Fluorescein Angiography”, Health Informatics Journal, Vol. 7, No. 3-4, pp. 214-221, 2001. (3)
	F. Kokkoras, D. Sampson, I. Vlahavas, “CG-PerLS: Conceptual Graphs for Personalized Learning Systems”, Proc. 8th Panhellenic Conference on Informatics, Livani Publishing Organization, Vol. 2, pp. 531-540, Nicosia, Cyprus, 2001. (2)
	D. Vrakas, I. Vlahavas, “Bi-Directional Heuristic Planning in State-Spaces”, Proc. 8th Panhellenic Conference on Informatics, Vol. 1, pp. 511-520, 2001.
	D. Vrakas, I. Vlahavas, “Combining Progression and Regression in State-Space Heuristic Planning”, Proc. 6th European Conference on Planning (ECP '01), 2001.
	G. Tsoumakas, I. Vlahavas, “Fuzzy Meta-Learning: Preliminary Results”, Proc. UK Workshop on Computational Intelligence (UKCI '01), pp. 43-48, 2001. (1)
	D. Vrakas, I. Refanidis, I. Vlahavas, “Parallel Planning via the Distribution of Operators”, Journal of Experimental and Theoretical Artificial Intelligence, Vol. 13 (3), pp. 211-226, 2001. (10)
	E. Hatzikraniotis, I. Lefkos, G. Bisdikian, D. Psillos, I. Refanidis, I. Vlahavas, “An Open Learning Environment for Thermal Phenomena”, Proc. 5th International Conference on Computer Based Learning in Science (CBLIS '01), 2001.
	I. Refanidis, I. Vlahavas, “The GRT Planning System: Backward heuristic construction in Forward State - Space Planning”, Journal of Artificial Intelligence Research, vol. 15, pp. 115-161, 2001. (5)
	I. Refanidis, I. Vlahavas, “The GRT Planner”, AI Magazine, Vol. 22 (3), pp. 63-65, 2001. (1)
	I. Vlahavas, “Intelligent Industrial Applications Using Constraint Logic Programming”, Education of Informaticians and Industrial Mathematicians: New Challenges and Needs, pp. 193-216, 2001.
	S. Demetriadis, G. Palaigeorgiou, A. Barbas, A. Molohides, L. Tsoukalas, D. Psillos, I. Vlahavas, “Educating ICT Tutors: Conclusions from the Operation of ICT Tutor's School at Aristotle University of Thessaloniki”, Proc. Panhellenic Conference: Connecting Tertiary to Secondary Education, 2001.
	I. Refanidis, I. Vlahavas, “The GRT Planner: New Results”, Proc. ECAI 2000 Workshop on Local Search Techniques for Planning and Scheduling, 2000.
	I. Refanidis, I. Vlahavas, “A Heuristic Based Approach to Planning in Strips Domains”, Advances in Informatics, D.I. Fotiadis and S.D. Nikolopoulos (Eds.), World Scientific, pp. 305-312, 2000.
	N. Bassiliades, I. Vlahavas, “Active Knowledge-Based Systems: Techniques and Applications”, Knowledge Engineering: Systems Techniques and Applications, C.T. Leondes (Ed.), Academic Press, Vol. 1, pp. 1-36, 2000. (11)
	I. Stamelos, I. Vlahavas, I. Refanidis, A. Tsoukias, “Knowledge Based Evaluation of Software Systems: A Case Study”, Information and Software Technology, Elsevier, Vol. 42(5), pp. 333-345, 2000. (2)
	I. Refanidis, I. Vlahavas, “Exploiting State Constraints in Heuristic State-Space Planning”, Proc. 5th International Conference on Artificial Intelligence Planning and Scheduling Systems, pp. 363-370, 2000. (2)
	I. Stamelos, I. Refanidis, P. Katsaros, A. Tsoukias, I. Vlahavas, A. Pombortsis, “An Adaptable Framework for Educational Software Evaluation”, Recent Developments and Applications in Decision Making, S.H. Zanakis, C. Zopounidis and G. Doukidis (Eds.), Kluwer Academic Publishers, 2000.
	D. Vrakas, I. Refanidis, I. Vlahavas, “An Operator Distribution Method for Parallel Planning”, Proc. AAAI-2000 Workshop on Parallel and Distributed Search for Reasoning, pp. 17-21, 2000. (1)
	I. Refanidis, I. Vlahavas, “Heuristic Planning with Resources”, Proc. 14th European Conference on AI (ECAI '00), 2000. (5)
	N. Bassiliades, I. Vlahavas, A. Elmagarmid, “E-DEVICE: An Extensible Knowledge Base System with Multiple Rule Support”, IEEE Transactions on Knowledge and Data Engineering, Vol. 12, No. 5, pp. 824-844, 2000. (17)
	I. Refanidis, K. Korobilis, A. Barbas, D. Katsoulis, E. Hatzikraniotis, I. Vlahavas, P. Argirakis, D. Psillos, “Virtual Lab-Environment for Thermodynamics (in Greek)”, Proc. 1st National Conference on Education and Informatics, 2000.
	I. Lefkos, I. Refanidis, L. Gallos, G. Bisdikian, E. Petridou, E. Hatzikraniotis, I. Vlahavas, P. Argirakis, D. Psillos, “Virtual Lab-Environment for Thermal Phenomena (in Greek)”, Proc. 1st National Conference on Education and Informatics, 2000.
	D. Psillos, P. Argirakis, I. Vlahavas, E. Hatzikraniotis, G. Bisdikian, I. Refanidis, I. Lefkos, K. Korobilis, D. Vrakas, L. Gallos, E. Petridou, I. Nikolaidis, “Composite Virtual-Lab Environment for Teaching Heat and Thermodynamics (in Greek)”, Proc. 2nd National Conference on Information and Communication Technologies in Education, 2000. (4)
	E. Hatzikraniotis, G. Bisdikian, I. Refanidis, I. Vlahavas, D. Psillos, “A virtual laboratory on Heat Phenomena”, Proc. 5th Workshop on Multimedia in Physics Teaching and Learning, 2000.
	I. Vlahavas, I. Refanidis, I. Sakellariou, “A Multimedia System for teaching Prolog (in Greek)”, Proc. 1st National Conference on Education and Informatics, 2000.
	A. Pombortsis, I. Vlahavas, “Controlling Performance Degradation of Multistage Interconnection Networks with Non-uniform Traffic”, International Journal of Modeling and Simulation, Vol. 19 (3), 1999.
	I. Refanidis, I. Vlahavas, “SSPOP: A State Space Partial-Order Planner”, Proc. 3rd World Multiconference on Systemics, Cybernetics and Informatics (SCI '99), 1999.
	M. Karamanlidou, I. Vlahavas, “Stock Miner: A System for Knowledge Discovery and Financial Data”, Proc. ACAI '99 Workshop on Data Mining in Economics, Marketing and Finance, 1999.
	G. Tsoumakas, I. Vlahavas, “ISLE: An Intelligent System for Land Evaluation”, Proc. ACAI '99 Workshop on Intelligent Techniques for Spatio-Temporal Data Analysis in Environmental Applications, pp. 26-32, 1999. (3)
	I. Stamelos, I. Refanidis, P. Katsaros, A. Tsoukias, I. Vlahavas, A. Pombortsis, “Automating the Evaluation of Educational Software”, Proc. 5th International Conf. of the Decision Sciences Institute (DSI '99), pp. 1369-1373, 1999.
	I. Vlahavas, I. Stamelos, I. Refanidis, A. Tsoukias, “ESSE: An Expert System for Software Evaluation”, Knowledge-Based Systems, Elsevier, Vol. 12 (4), pp. 183-197, 1999. (8)
	I. Vlahavas, P. Kefalas, C. Halatsis, “OASys: An AND/OR Parallel Logic Programming System”, Parallel Computing, Elsevier, Vol. 25, pp. 321-336, 1999. (2)
	P. Linardis, I. Vlahavas, “PARCIS: A Robust Parallel VLSI Circuit Simulator”, Simulation Practice and Theory Journal, Elsevier, Vol. 7, pp. 91-103, 1999.
	I. Refanidis, I. Vlahavas, “GRT: A Domain Independent Heuristic for STRIPS Worlds based on Greedy Regression Tables”, Proc. 5th European Conference on Planning (ECP '99), Springer-Verlag, pp. 346-358, 1999. (23)
	I. Refanidis, I. Vlahavas, L. Tsoukalas, “On Determining and Completing Incomplete States in STRIPS Domains”, Proc. IEEE International Conference on Information, Intelligence and Systems, pp. 289-296, 1999.
	D. Vrakas, I. Refanidis, F. Milcent, I. Vlahavas, “On the Parallelization of Greedy Regression Tables”, Proc. 18th Workshop of the UK Planning and Scheduling Special Interest Group (PlanSIG '99), pp. 180-189, 1999. (1)
	F. Kokkoras, S. Gregory, “D-WMS: Distributed Workforce Management using CLP”, Proc. 4th International Conf. on the Practical Applications of Constraint Technology (PACT '98), pp. 129-146, 1998. (9)
	I. Vlahavas, P. Tsarchopoulos, I. Sakellariou, “Parallel and Constraint Logic Programming”, Book, Kluwer Academic Publishers, ISBN 0-7923-8371-0, 1998.
	I. Vlahavas, N. Bassiliades, I. Sakellariou, et al., “System Architecture of a Distributed Expert System for the management of a National Data Network”, Proc. 8th International Conference on Artificial Intelligence (AIMSA '98), F. Giunchiglia (Ed.), Springer-Verlag, Vol. 1480, pp. 438-451, Sozopol, Bulgaria, September 1998, 1998. (3)
	I. Vlahavas, “Exploiting And-Or Parallelism in Prolog: The OASys Computational Model and Abstract Architecture”, The Journal of Systems and Software, Elsevier, Vol. 43(1), pp. 45-57, 1998. (1)
	I. Vlahavas, N. Bassiliades, “Parallel, Object-Oriented and Active Knowledge Base Systems”, Book, Kluwer Academic Publishers, ISBN 0-7923-8117-3, 1998. (20)
	N. Bourbakis, D. Goldman, R. Fermatt, I. Vlahavas, L. Tsoukalas, “Path Planning in a 2-D known Space using Neural Networks and Skeletonization”, Proc. IEEE International Conference on Systems Man and Cybernetics (SMC '97), 1997.
	A. Likartsis, I. Vlahavas, L. Tsoukalas, “A New Hybrid Neural-Genetic Methodology for Improving Learning”, Proc. IEEE 9th International Conference on Tools with Artificial Intelligence (ICTAI '97), 1997. (10)
	I. Vlahavas, P. Kefalas, I. Sakellariou, C. Halatsis, “The Basic OASys Model: Preliminary Results”, Proc. 6th Hellenic Conference on Informatics, pp. 723-731, 1997.
	N. Bassiliades, I. Vlahavas, “A Deductive Object-Oriented Database System based on Active Rules”, Proc. 6th Hellenic Conference on Informatics, pp. 180-189, Athens, December 1997, 1997. (1)
	I. Vlahavas, A. Pombortsis, I. Sakellariou, “IDIS-KS: an Intelligent Drug Information System as a Knowledge Server”, Proc. 14th International Congress of Medical Informatics Europe (MIE '97), pp. 368-372, 1997.
	N. Bassiliades, I. Vlahavas, “Processing Production Rules in DEVICE, an Active Knowledge Base System”, Data and Knowledge Engineering, Elsevier, Vol. 24, No. 2, pp. 117-155, 1997. (7)
	N. Bassiliades, I. Vlahavas, “DEVICE: Compiling Production Rules into Event-Driven Rules Using Complex Events”, Information and Software Technology, Elsevier, Vol. 39, No. 5, pp. 331-342, 1997. (18)
	K. Mamzoridi, M. Pirpasopoulos, I. Vlahavas, A. Pombortsis, “Towards a Drug Information Center: The Aesculapius project”, Proc. 1st EURO DRUG Conference, 1996.
	P. Kefalas, I. Vlahavas, “Multiple OR-Parallel Resolution: Meta-Level Control of Parallel Logic Programs”, Proc. Parallel Processing (Euro-Par '96), Bouge, P. Fraigniaud, A. Mignotte and Y. Robert (Eds.), Springer-Verlag, LNCS 1123, pp. 694-703, 1996. (1)
	N. Bassiliades, I. Vlahavas, “Hierarchical Query Execution in a Parallel Object-Oriented Database System”, Parallel Computing, Elsevier, Vol. 22, No. 7, pp. 1017-1048, 1996. (13)
	P. Kefalas, E. Tzelalis, “GRS-Prolog: Applying Different Resolution Strategies to Prolog Programs”, Proc. 5th Hellenic Conference on Information Techology, 1995.
	N. Bassiliades, I. Vlahavas, “A Non-Uniform Data Fragmentation Strategy for Parallel Main-Memory Database Systems”, Proc. 21st International Conference on Very Large Data Bases (VLDB '95), U. Dayal, P.M.D. Gray, S. Nishio (Ed.), Morgan Kaufmann, pp. 370-381, September 11-15, 1995, Zurich, Switzerland, 1995. (7)
	N. Bassiliades, I. Vlahavas, “PRACTIC: A Concurrent Object Data Model for a Parallel Object-Oriented Database System”, Information Sciences, Elsevier, Vol. 86 (1-3), pp. 149-178, 1995. (7)
	F. Kokkoras, I. Vlahavas, “COMFRESH: A Common Framework for Expert Systems and Hypertext”, Information Processing and Management, Pergamon, Elsevier, Vol. 31 (4), pp. 593-604, 1995. (3)
	N. Bassiliades, I. Vlahavas, “Constraint Checking in a Parallel Object-Oriented Database System”, Journal of Parallel Algorithms and Applications, Gordon and Breach, Vol. 5, No. 3-4, pp. 129-147, 1995.
	N. Bassiliades, P. Gray, “CoLan: A Functional Constraint Language and Its Implementation”, Data and Knowledge Engineering, Vol. 14, No. 3, pp. 203-249, 1995. (42)
	S. Embury, P. Gray, N. Bassiliades, “Constraint Maintenance Using Generated Methods in the P/FDM Object-Oriented Database”, Proc. 1st International Workshop on Rules in Database Systems, N.W. Paton and M.H. Williams (Eds.), Springer-Verlag, pp. 364-381, Edinburgh, Scotland, 30 August- 1 September 1993, 1994. (8)
	A. Pombortsis, I. Vlahavas, “Flow Control and Switching Strategy for Preventing Congestion in Multistage Networks”, Architecture and Protocols for High-speed Networks, O. Spaniol, A. Dantine and W. Effelsberg (Eds.), Kluwer Academic Publishers, 1994.
	A. Pombortsis, I. Vlahavas, “A Contribution to the Problem of Avoiding Congestion in Multistage Networks in the Presence of Unbalanced Traffic”, The Journal of Systems and Software, Elsevier, Vol. 26, pp. 273-284, 1994.
	N. Bassiliades, I. Vlahavas, “Modelling Constraints with Exceptions in Object-Oriented Databases”, Entity-Relationship Approach - ER'94, Business Modelling and Re-Engineering, 13th International Conference on the Entity-Relationship Approach, P. Loucopoulos (Ed.), Springer-Verlag, LNCS 881, pp. 189-204, Manchester, United Kingdom, December 1994, 1994. (14)
	C. Maciazek, N. Bassiliades, I. Vlahavas, “Parallel Management of Large Deductive Databases in a Multi-Processor Environment”, Proc. IEEE Mediterranean Electrotechnical Conference (Melecon '94), pp. 367-370, Antalya, Turkey, April 1994, 1994. (1)
	I. Sakellariou, I. Vlahavas, “An Expert System for Land Evaluation”, Proc. 6th Hellenic Physics Conference, 1993.
	N. Bassiliades, I. Vlahavas, “A Multiprocessor System for the Efficient Management of Large Knowledge Bases (in Greek)”, Proc. 6th Hellenic Physics Conference, pp. 217-221, Xanthi, Greece, March 1993, 1993.
	N. Bassiliades, I. Vlahavas, “A Multiprocessor Machine for the Parallel Management of an Active Object-Oriented DataBase (in Greek)”, Proc. 4th Hellenic Conference on Informatics, pp. 501-512, Patra, Greece, December 1993, 1993.
	A. Pombortsis, I. Vlahavas, “A Novel Flow Control and Switching Strategy for Preventing Hot Spot Congestion in Multistage Networks”, Microprocessors and Microsystems, Butterworth, Vol. 17 (7), 1993. (1)
	I. Vlahavas, P. Kefalas, “The AND/OR Parallel Prolog Machine APIM: Execution Model and Abstract Design”, Journal of Programming Languages, Chapman and Hall, Vol. 1, pp. 245-261, 1993.
	A. Pombortsis, I. Vlahavas, “Preventing Performance Degradation in Packet-Switched Multistage Interconnection Networks Under Nonuniform Traffic”, Proc. Microcomputer and Microprocessor Applications Conference, 1992.
	A. Pombortsis, I. Vlahavas, “Flow Control in Packet-Switched Multistaged Interconnection Networks”, Proc. CompEuro '92, 1992.
	I. Vlahavas, P. Kefalas, “An Abstract Prolog Machine Based on Parallel Resolution Principle”, Proc. Microprocessing and Microprogramming (Euromicro '92), North-Holland, No. 35, pp. 755-762, 1992.
	I. Vlahavas, P. Kefalas, “A Parallel Prolog Resolution Based on Multiple Unifications”, Parallel Computing, Elsevier, Vol. 18, pp. 1275-1283, 1992. (1)
	I. Vlahavas, “The Programming Language Pascal”, ISBN 960-7013-17-4, Gartaganis Publications, 1991.
	N. Bassiliades, I. Vlahavas, “LBASE: A Logical Database Management System”, General Conference of the Balkan Physical Union, pp. 640-642, Thessaloniki, Greece, September 1991, 1991.
	A. Pombortsis, I. Vlahavas, “A Communication Analysis For Optimizing Hierarchical Multicomputer Systems”, Proc. CompEuro '91, 1991.
	T. Reynolds, P. Kefalas, “BRAVE: An OR-Parallel dialect of Prolog and its Application to AI”, Proc. 1st and 2nd International Conference in Logic Programming in Soviet Union, Springer-Verlag, LNAI 592, 1991.
	P. Kefalas, T. Reynolds, “Controlling Search with meta-BRAVE”, Proc. ICLP'91 Workshop in Parallel Execution of Logic Programs, A. Beaumont and G. Gupta (Eds.), Springer-Verlag, LNCS 569, 1991.
	P. Kefalas, T. Reynolds, “Hill-Climbing and Genetic Algorithms coded using OR-parallel Logic plus Meta-Control”, Proc. IJCAI'91 1st International Workshop on Parallel Processing for AI, 1991.
	T. Reynolds, P. Kefalas, “OR-Parallel Prolog and Search Problems in AI”, Proc. 7th International Conference in Logic Programming, D.H.D. Warren and P. Szeredi (Eds.), MIT Press, 1990.
	I. Vlahavas, A. Pombortsis, D. Stamatis, “Towards a Parallel Inference Machine: the APIM project”, Proc. Microprocessing and Microprogramming (Euromicro '90), North-Holland, No. 30, pp. 201-206, 1990.
	I. Vlahavas, C. Halatsis, “L-Machine: A Low Cost Personal Sequential Inference Machine”, The Journal of Systems and Software, Elsevier, Vol. 9, pp. 209-223, 1989.
	T. Reynolds, P. Kefalas, “OR-Parallel Logic Languages in Law Applications”, Proc. 3rd International Cong. in Law and Expert Systems, A.A. Martino (Ed.), pp. 579-594, 1989.
	I. Vlahavas, C. Halatsis, “A New Abstract Prolog Instruction Set”, Proc. Avignon 87, Expert systems and their applications, 1987. (2)
	A. Pombortsis, I. Vlahavas, C. Halatsis, “On the Performance of Packet Switching Interconnection Networks for Multiprocessor Systems”, Proc. Parallel Processing and Applications, 1987.
	I. Vlahavas, C. Halatsis, “A RISC Prolog Machine Architecture”, Proc. Microprocessing and Microprogramming (Euromicro '87), North-Holland, No. 21, pp. 259-266, 1987.
	C. Konidaris, I. Vlahavas, “A Prolog Compiler for the L-Machine (in Greek)”, Proc. 4th Hellenic Physics Conference, 1986.
	Year Total: 216