Vangelis Karkaletsis is a Research Director at IIT* in NCSR Demokritos** in Athens, Greece.
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Publications: Conference papers       
  1. Y. Charalabidis, V. Karkaletsis,  A.Triantafillou, A. Androutsopoulou and E. Loukis, “Requirements and Architecture of a Passive Crowdsourcing Environment”, e-Part 2013 Conference, Koblenz, Germany, September 17-19, 2013
  2. Alexandros Papangelis, Stasinos Konstantopoulos, Vangelis Karkaletsis, and Fillia Makedon, “Recent Advances and Future Directions of Adaptive Dialogue Systems”, Accepted to the Workshop on Machine Learning for Interactive Systems (MLIS-2013) at the 23rd International Joint Conference on Artificial Intelligence (IJCAI 2013), Beijing, China, August 3-9, 2013.
  3. Nikos Katzouris, Alexander Artikis, Fillia Makedon, Vangelis Karkaletsis, George Paliouras, “Event recognition for assisted independent living”, Proceedings of the 6th International Conference on Pervasive Technologies Related to Assistive Environments  (PETRA 2013), Rhodes Island, Greece, May 29-31, 2013
  4. V. Karkaletsis, G. Potamianos, and S. Konstantopoulos, “Embodiment and Audio-Visual Perception in Tele-Health Environments”, In Proceedings of the 6th International Conference on Pervasive Technologies Related to Assistive Environments, Rhodes island, Greece, 29 May, 2013
  5. Alexandros Papangelis, Vangelis Karkaletsis, Heng Huang, “Towards adaptive dialogue systems for assistive living environments”, Proceedings  of the companion publication of the 2013 International Conference on Intelligent user interfaces companion, Proceedings of the IUI 2013 International Conference on Intelligent User Interfaces, Santa  Monica, CA, USA, 19-22 March 2013
  6. G. Giannakopoulos, V. Karkaletsis, “Together we stand NPowER-ed” 14th International Conference on Intelligent Text Processing and Computational Linguistics, Karlovasi, Samos, Greece, March 3, 2013, LNCS Volume 7817, 2013, pp 436-450.
  7. A. Papangelis, V. Karkaletsis and F. Makedon, “Evaluation of Online Dialogue Policy Learning Techniques”, International Conference on Language Resources and Evaluation (LREC), 2012
  8. M. Vodas, N. Pelekis, Y. Theodoridis, C. Ray, V. Karkaletsis, S. Petridis and A. Miliou, “Big AIS Data Processing for Environmentally Safe Shipping”, Workshop on Progress in Movement Analysis: Experiences with Real Data, November 15-16, 2012, Zurich, Switzerland,  4 pages.
  9. Y. Charalabidis, A. Triantafillou, V. Karkaletsis and E. Loukis, “Public Policy Formulation through Non Moderated Crowdsourcing in Social Media”,  In Proceedings of the 4th IFIP WG 8.5 International Conference, ePart 2012, Kristiansand, Norway, September 3-5, 2012.
  10. A. Artikis, P. D. Bamidis, V. Karkaletsis, S. Konstantopoulos, S. Petridis, C. S. Spyropoulos, et al., “Supporting tele-health and AI-based clinical decision making with sensor data fusion and semantic interpretation: The USEFIL case study”, In Proceedings of the International Workshop on Artificial Intelligence and NetMedicine (NetMed 2012), held at ECAI 2012. Montpellier, France, 27 August 2012.
  11. A.  Koukourikos, P. Karampiperis, G. Vouros, and V. Karkaletsis, “Using Open Information Extraction and Linked Open Data towards Ontology Enrichment and Alignment”, in Proceedings of the 5th International Workshop on Ontology, Models Conceptualization and Epistemology in Social, Artificial and Natural Systems (ONTOSE 2012), Gdansk, Poland, June 25-29, 2012
  12. Vangelis Karkaletsis, Pythagoras Karampiperis, Stasinos Konstantopoulos, “Social networks as a resource for policy formulation”, In Proceedings of the International Workshop on Online Social Networks: Challenges and Perspectives (IWOSN), Patras, Greece, June 15, 2012.
  13. S. Konstantopoulos, V. Kordoni, N. Cancedda, V. Karkaletsis, D. Klakow and J. Renders, “Task-Driven Linguistic Analysis based on an Underspecified Features Representation”. In Proceedings of the Xth Conference on Language Resources and Evaluation (LREC 2012), Istanbul, Turkey, May 2012. 
  14. George Giannakopoulos, Vangelis Karkaletsis, George Vouros (2012), “Detecting Human Features in Summaries - Symbol Sequence Statistical Normality”, In: SETN 2012 Lamia, Greece.
  15. Papangelis, G. Mouchakis, A. Boisselle, D. Kosmopoulos, V. Karkaletsis, F. Makedon, “A Game System For Remote Rehabilitation Of Cerebral Palsy Patients”, PETRA 2012
  16. Papangelis, N. Kouroupas, V. Karkaletsis, F.Makedon, “An Adaptive Dialogue System With Online Dialogue Policy Learning”, Hellenic Conference on Artificial Intelligence (SETN), pp. 323-330, 2012
  17. P. Karampiperis, S. Konstantopoulos, and V. Karkaletsis, “POWDER as enabling technology for the semantic interoperability of agricultural repositories”, In Proceedings of Metadata and Semantics Research: 5th International Conference MTSR 2011, Izmir, Turkey, October 12-14, 2011.
  18. P. Karampiperis, G. Mouchakis, G. Paliouras, and V. Karkaletsis. “ER Designer Toolkit: A Graphical Event Definition Authoring Tool”, In Proceedings of the 4th International Conference on Pervasive Technologies Related to Assistive Environments (PETRA 2011), Heraklio, Crete, May 2011.
  19. G. Giannakopoulos and V. Karkaletsis. “Summarization system evaluation variations based on n-gram graphs”. In Proceedings of the Text Analysis Conference (TAC) 2010, Gaithersburg, MD, U.S.A, November 2010.
  20. V. Rentoumi, S. Petrakis, M. Klenner, G.A. Vouros and V. Karkaletsis. “United we Stand: Improving Sentiment Analysis by Joining Machine Learning and Rule Based Methods”, In Proceedings of LREC 2010, May 2010.
  21. V. Rentoumi, S. Petrakis, V. Karkaletsis, M. Klenner and G.A. Vouros, “A Collaborative System for Sentiment Analysis”, In Proceedings of the 6th Hellenic Conference on Artificial Intelligence (SETN-2010) “Artificial Intelligence: Theories, Models and Applications”, Springer LNAI 6040, 411-416, 2010.
  22. V. Karkaletsis, S. Konstantopoulos, D. Bilidas and D. Vogiatzis, “INDIGO project: personality and dialogue enabled cognitive robots”, In Proceedings of the 3rd International Conference on Pervasive Technologies Related to Assistive Environments (PETRA 2010), Samos, Greece, June 2010.
  23. G. Giannakopoulos, V. Karkaletsis. N-gram graphs: Representing documents and document sets in summary system evaluation. In Proceedings of Text Analysis Conference TAC 2009, November 16-17, 2009, Gaithersburg, Maryland, USA.
  24. V. Rentoumi, G. Giannakopoulos, V. Karkaletsis, and G. Vouros. Sentiment Analysis of Figurative Language using a Word Sense Disambiguation Approach, In Proceedings of RANLP 2009, September 14-16, 2009, Borovets, Bulgaria.
  25. P. Archer, E. Ferrari, V. Karkaletsis, S. Konstantopoulos, A. Koukourikos, and A. Perego. QUATRO Plus: Quality You Can Trust? In Proc. Workshop on Trust and Privacy on the Social and Semantic Web (SPOT-09), 6th European Semantic Web Conference (ESWC-09), Heraklion, Crete, Greece, June 2009. Proceedings published as vol. 447 of the CEUR Workshop Proceedings series.
  26. G. Petasis, V. Karkaletsis, A. Krithara, G. Paliouras, and C.D. Spyropoulos. Semi-automated ontology learning: the BOEMIE approach. International Workshop on Inductive Reasoning and Machine Learning on the Semantic Web (IRMLeS),European Semantic Web Conference (ESWC), June 2009.
  27. S. Konstantopoulos, V. Karkaletsis, D. Bilidas. An intelligent authoring environment for abstract semantic representations of cultural object descriptions. In: Proc. EACL Workshop on Language Technology and Resources for Cultural Heritage, Social Sciences, Humanities, and Education (LaTeCH-SHELT&R-09), Athens, March 2009.
  28. G. Giannakopoulos, V. Karkaletsis, G. Vouros. Summarization Evaluation under an N-gram Graph Perspective: In View of Combined Evaluation Measures, Text Analysis Conference (TAC) 2008, Washington, U.S.A.
  29. G. Petasis, V. Karkaletsis, G. Paliouras and C.D. Spyropoulos, "Learning context-free grammars to extract relations from text" In Proceedings of the the European Conference on Artificial Intelligence (ECAI) , IOS Press, pp. 303-307, Patras, Greece, July 2008.
  30. D. Vogiatzis, C.D. Spyropoulos, S. Konstantopoulos, V. Karkaletsis, Z. Kasap, C. Matheson, and O. Deroo, An Affective Robot Guide to Museums. In: Proc. 4th International Workshop on Human-Computer Conversation, Bellagio, Italy, 6-7 October, 2008.
  31. V. Karkaletsis, P. Karampiperis, K. Stamatakis, M. Labský, M. Ruzicka, V. Svátek, M.A. Mayer, A. Leis, D. Villarroel, Automating Accreditation of Medical Web Content. Proceedings of the 18th European Conference on Artificial Intelligence (ECAI-2008), Prestigious Applications of Intelligent Systems (PAIS), Patras, Greece, IOS Press, pp. 688-692.
  32. S. Konstantopoulos, V. Karkaletsis, and C. Matheson, Robot personality: Representation and externalization. In: Proc. International Workshop on Computational Aspects of Affective and Emotional Interaction (CAFFEi 08), Patras, Greece, July 21st, 2008.
  33. G. Giannakopoulos, V. Karkaletsis, G. Vouros, Testing the Use of N-gram Graphs in Summarization Sub-tasks, Proceedings of Text Analysis Conference (TAC) 2008.
  34. V. Rentoumi, V. Karkaletsis, G. Vouros, and A. Mozer, Sentiment Analysis Exploring Metaphorical and Idiomatic Senses: A Word Sense Disambiguation Approach. In: Proc. International Workshop on Computational Aspects of Affective and Emotional Interaction (CAFFEi 08), Patras, Greece, July 21st, 2008.
  35. D. Vogiatzis, D. Galanis, V. Karkaletsis, I. Androutsopoulos, C.D. Spyropoulos, A Conversant Robotic Guide to Art Collections, Proceedings of LaTeCH-2008.
  36. P. Fragkou, G. Petasis, A. Theodorakos, V. Karkaletsis, C.D. Spyropoulos, BOEMIE ontology-based text annotation tool, Proceedings of LREC-2008.
  37. G. Petasis, A. Theodorakos, P. Fragkou , V. Karkaletsis, Segmenting HTML pages using visual and semantic information, Proceedings of WAC-2008.
  38. D. Vogiatzis, V. Karkaletsis, A Framework for Human-Robot Interaction, Proceedings of the International Conference on Pervasive Technologies Related to Assistive Environments (PETRA 2008).
  39. A. Tegos, V. Karkaletsis, A. Potamianos, Learning of Semantic Relations between Ontology Concepts using Statistical Techniques, Proceedings of the Workshop on High-Level Information Extraction (HLIE 2008) at ECML-PKDD 2008, Antwerp, Belgium, September 19, 2008.
  40. V. Spiliopoulos, A. Valarakos, G.A. Vouros, and V. Karkaletsis, "Learning Subsumption Relations with CSR: A Classification-based Method for the Alignment of Ontologies", Proceedings of the Second International Workshop on Ontology Matching (OM-2007) , in the context of the 6 th International Semantic Web Conference (ISWC-2007), November 11, 2007: BEXCO, Busan, Korea. (pdf)
  41. V. Spiliopoulos, G.A. Vouros, and V. Karkaletsis, "Mapping Ontologies Elements using Features in a Latent Space", Proceedings of the 2007 IEEE/WIC/ACM International Conference on Web Intelligence (WI-2007), Silicon Valley, USA, November 2-5, 2007.
  42. D. Bilidas, M. Theologou, V. Karkaletsis, "Enriching OWL Ontologies with Linguistic and User-related Annotations: the ELEON system", Proceedings of the IEEE International Conference on Tools with Artificial Intelligence (ICTAI-2007), Patras, Greece, October 29-31, 2007. (pdf)
  43. D.V. Gonzales, M.A. Mayer, A. Leis, V. Karkaletsis, K. Stamatakis, V. Metsis, P. Nasikas, M. Labský, M. Ruzicka, V. Svátek, F. López-Ostenero, V. Peinado, E.A. Cabrera, T. Honkela, M. Pöllä. "AQUA (Assisting Quality Assessment): a system based on Semantic web and information extraction technologies to support medical quality labelling agencies" , Proceedings of the 12 th World Congress on the Internet in Medicine (Mednet 2007), Leipzig , Germany , October 7-10, 2007.
  44. K. Stamatakis, V. Metsis, V. Karkaletsis, M. Ruzicka, V. Svátek, V. E.A. Cabrera, and M. Pöllä, "Content collection for the labeling of health-related web content". Proceedings of the 11 th Conference on Artificial Intelligence in Medicine (AIME 07), LNAI 4594, pp. 341-345, 2007. (pdf)
  45. K . Stamatakis, K. Chandrinos, V. Karkaletsis, M.A. Mayer, D.V. Gonzales, M. Labsky, E. Amigó, and M. Pöllä, "AQUA, a system assisting labelling experts assess health web resources". Proceedings of 12 th International Symposium for Health Information Management Research (iSHIMR 2007), Sheffield, UK, July 2007. (pdf)
  46. S. Castano, S. Espinosa, A. Ferrara, V. Karkaletsis, A. Kaya, S. Melzer, R. Möller, S. Montanelli, G. Petasis, "Ontology Dynamics with Multimedia Information: The BOEMIE Evolution Methodology", Proceedings of the International Workshop on Ontology Dynamics ( IWOD -07), in the context of the 4 th European Semantic Web Conference (ESWC-07), Innsbruck, Austria, June 7, 2007, pp. 41-54. (pdf)
  47. V. Karkaletsis, K. Stamatakis, V. Metsis, V. Redoumi, D. Tsarouhas, "Health-related Web Content: quality labelling mechanisms and the MedIEQ approach", Proceedings of the 4th International Conference on Information Communication Technologies in Health (ICICTH-2006), July 13-15, 2006, Samos, Greece. (pdf)
  48. Z. Le, J. Ford, V. Karkaletsis, V. Spiliopoulos, S. Katsikas, F. Makedon. "Secure group collaboration in an open health care environment", Proceedings of the 4th International Conference on Information Communication Technologies in Health (ICICTH-2006), July 13-15, 2006, Samos , Greece.
  49. F. Makedon, V. Karkaletsis, G. Giannakopoulos, I. Maglogiannis, J. C. Ford, G. Vassilakopoulos. "Health Grid Cyberinfrastructure: Computational Perspectives", Proceedings of the 4th International Conference on Information Communication Technologies in Health (ICICTH-2006), July 13-15, 2006, Samos, Greece.
  50. V. Karkaletsis, A. Perego, P. Archer, K. Stamatakis, P. Nasikas, D. Rose, "Quality Labeling of Web Content: The Quatro approach", Proceedings of "Models of Trust for the Web" (MTW'06) workshop, 15th International World Wide Web Conference (WWW2006), May 22-26, 2006, Edinburgh, Scotland. (pdf)
  51. D. Kosmopoulos, S. Petridis, I. Pratikakis, V. Gatos, S. Perantonis, V. Karkaletsis and G. Paliouras, "Knowledge Acquisition from Multimedia Content using an Evolution Framework," In Proceedings of the IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI), IFIP International Federation for Information Processing Series, n. 204, pp. 557-565, Springer Boston, 2006. (abstract) (pdf)
  52. V. Karkaletsis, A. Valarakos, C.D. Spyropoulos, "Populating ontologies in biomedicine and presenting their content using multilingual generation", in Proceedings of the LREC'06 Workshop on "Acquiring and Representing Multilingual, Specialized Lexicons: the Case of Biomedicine", May 23, 2006, Genoa, Italy.
  53. C. D. Spyropoulos, G. Paliouras, V. Karkaletsis, D. Kosmopoulos, I. Pratikakis, S. Perantonis, B. Gatos, "BOEMIE: Bootstrapping Ontology Evolution with Multimedia Information Extraction", In Proceedings of the 2nd European Workshop on Integration of Knowledge, Semantic and Digital Media Technologies, London, UK, November 2005, Also in Proceedings of the International Workshop for Intelligent Information Access (IIIA), Helsinki, Finland, July 2006. (abstract) (pdf)
  54. M.A. Mayer, V. Karkaletsis, P. Archer, P. Ruiz, K. Stamatakis, A. Leis, "Quality labelling of medical web content", 10 th International Symposium on Health Information Management Research (ISHIMR'05), pp. 326-331, Thessaloniki, Sep. 2005.
  55. S.D. Afantenos, V. Karkaletsis, P. Stamatopoulos, "Summarizing Reports on Evolving Events; Part I: Linear Evolution" , Recent advances in Natural Language Processing (RANLP'05), pp. 18-24, Borovets, Bulgaria, Sep. 2005. (pdf)
  56. I. Androutsopoulos, S. Kallonis, V. Karkaletsis, "Exploiting OWL Ontologies in the Multilingual Generation of Object Descriptions", Proceedings of the 10 th European Workshop on Natural Language Generation (ENLG-05), Aberdeen, 8-10 August 2005. (pdf)
  57. A. Valarakos, V. Karkaletsis, D. Alexopoulou, E. Papadimitriou, and C.D. Spyropoulos, "Populating an Allergens Ontology Using Natural Language Processing and Machine Learning Techniques", Proceedings of the Artificial Intelligence in Medicine Conference (AIME'2005), LNAI 3581, pp. 264-273, 2005. (pdf)
  58. V. Karkaletsis, G. Paliouras, C. D. Spyropoulos, "A Bootstrapping Approach to Knowledge Acquisition from Multimedia Content with Ontology Evolution," In Proceedings of the International and Interdisciplinary Conference on Adaptive Knowledge Representation and Reasoning (AKRR), pp. 98-105, Helsinki University of Technology, Finland, June 2005. (abstract) (pdf)
  59. S. Afantenos, K. Liontou, M. Salapata, and V. Karkaletsis. "An Introduction to the Summarization of Evolving Events: Linear and Non-linear Evolution." Proceedings of the Natural Language Understanding and Cognitive Science Workshop (NLUCS-2005), Miami , USA , pp 91-99, 2005. (pdf)
  60. D. Pierrakos, G. Paliouras, C. Papatheodorou, V. Karkaletsis, M. Dikaiakos, "Web Community Directories: A New Approach to Web Personalization," In Berendt et al. (Eds.), "Web Mining: From Web to Semantic Web", Lecture Notes in Computer Science, n. 3209, pp. 113 - 129, Springer Verlag, 2004. (abstract) (pdf)
  61. A. Valarakos, G. Paliouras, V. Karkaletsis, G. Vouros, "Enhancing the Ontological Knowledge through Ontology Population and Enrichment," In Proceedings of the International Conference on Knowledge Engineering and Knowledge Management (EKAW), Lecture Notes in Artificial Intelligence, n. 3257, pp. 144-156, Springer Verlag, 2004. (abstract) (pdf)
  62. A. Valarakos, G. Paliouras, V. Karkaletsis, G. Vouros, "A Name-Matching Algorithm for Supporting Ontology Enrichment," In Proceedings of the Panhellenic Conference in Artificial Intelligence (SETN), Lecture Notes in Artificial Intelligence, n. 3025, pp. 381-389, Springer Verlag, 2004. (abstract) (pdf)
  63. S. Zhang, F. Makedon, J. Ford , C. Sudborough, L. Ai, S. Kapidakis, V. Karkaletsis, and E. Loukis, "An International Trade Negotiation Framework for E-Government", In Proceedings of the 3 rd International Conference on Electronic Government (EGOV '04), Lecture Notes in Computer Science 3183, Springer, pp. 211-217, Zaragoza, Spain, Aug. 30-Sep. 3, 2004. (pdf)
  64. G . Petasis, V . Karkaletsis, C . Grover, B . Hachey, M . T . Pazienza, M . Vindigni, J . Coch, "Adaptive , Multilingual Named Entity Recognition in Web Pages" In Proceedings of the European Conference in Artificial Intelligence (ECAI), pp. 1073 - 1074, Valencia, Spain, 2004.
  65. V. Karkaletsis, C. D. Spyropoulos, C. Grover, M. T. Pazienza, J. Coch, D. Souflis, "A Platform for Cross - lingual, Domain and User Adaptive Web Information Extraction" In Proceedings of the European Conference in Artificial Intelligence (ECAI ), pp. 725 - 729, Valencia, Spain, 2004.
  66. V. Karkaletsis, C.D. Spyropoulos, "Information Retrieval and Extraction from the Web: the CROSSMARC approach", In Proceedings of the RIAO 2004 Conference "Coupling approaches, coupling media and coupling languages for information retrieval", pp. 905-114, Avignon, April 26-28, 2004.
  67. B. Gatos, S. J. Perantonis, V. Maragos, V. Karkaletsis and G. Petasis, "Text Area Identification in Web Images", In Proceedings of the Panhellenic Conference in Artificial Intelligence (SETN), Lecture Notes in Artificial Intelligence, n. 3025, pp. 82- 92, Springer Verlag, 2004.
  68. S. Afantenos, I.Doura, E. Kapellou, V. Karkaletsis, "Exploiting Cross-Document Relationships for Mutli-Document Summarization", In Proceedings of the Panhellenic Conference in Artificial Intelligence (SETN), Lecture Notes in Artificial Intelligence, n. 3025, pp. 410-419, Springer Verlag, 2004. (pdf)
  69. D. Pierrakos, G. Paliouras, C. Papatheodorou, V. Karkaletsis, M. Dikaiakos. "Construction of Web Community Directories using Document Clustering and Web Usage Mining", Proceedings of the 1st European Web Mining Forum Workshop, Joint European Conference on Machine Learning andon Principles and Practices of Knowledge Discovery in Databases (ECML/PKDD) , Cavtat-Dubrovnik, Croatia, 2003. (abstract) (pdf)
  70. A. Valarakos, G. Sigletos, V. Karkaletsis, G. Paliouras. "A Methodology for Semantically Annotating a Corpus Using a Domain Ontology and Machine Learning", Proceedings of the the Recent Advances in Natural Language Processing International Conference (RANLP) , Borovets, Bulgaria, 2003. (abstract) (pdf)
  71. A. Valarakos, G. Sigletos, V. Karkaletsis, G. Paliouras, G. Vouros. "A Methodology for Enriching a Multi-Lingual Domain Ontology using Machine Learning", Proceedings of the Workshop on Text Processing for Modern Greek: from Symbolic to Statistical Approaches, 6th International Conference in Greek Linguistics , Rethymno, Crete, 2003. (abstract) (pdf)
  72. G. Petasis, V. Karkaletsis and C.D. Spyropoulos. " Cross-lingual Information Extraction from Web pages: the use of a general-purpose Text Engineering Platform", Proceedings of the RANLP'2003 Conference, pp. 381-388, Borovets, Bulgaria, September 10-12, 2003.
  73. K. Stamatakis, V. Karkaletsis, G. Paliouras, J. Horlock, C. Grover, J. R. Curran, S. Dingare. "Domain-Specific Web Site Identification: The CROSSMARC Focused Web Crawler" Proceedings of the Second International Workshop on Web Document Analysis (WDA) , Edinburgh, UK, 2003. (abstract) (pdf)
  74. G. Sigletos, D. Farmakiotou, K. Stamatakis, G. Paliouras, V. Karkaletsis. "Annotating Web pages for the needs of Web Information Extraction applications", Poster in the proceedings of the 12th Internatonal World Wide Web Conference (WWW) , Budapest, Hungary, 2003. (abstract) (pdf)
  75. D. Pierrakos, G. Paliouras, C. Papatheodorou, V. Karkaletsis, M. Dikaiakos. "Construction of Web Community Directories by Mining Usage Data", Proceedings of the Hellenic Data Management Symposium (HDMS) , Athens, Greece, 2003. (abstract) (pdf)
  76. M. Vassiliou, S. Markantonatou, Y. Maistros, and V. Karkaletsis. "Evaluating Specifications for Controlled Greek", In Proceedings of the EAMT/CLAW 2003 Conference on "Controlled Language Translation", pp. 185-193, Dublin, Ireland, May 15-17, 2003.
  77. Hachey B., C. Grover, V. Karkaletsis, A. Valarakos, M.T. Pazienza, M. Vindigni, E. Cartier, J. Coch. "Use of Ontologies for Cross-lingual Information Management in the Web", Proceedings of the Ontologies and Information Extraction International Workshop held as part of the EUROLAN 2003, Bucharest, Romania, July 28 - August 8, 2003.
  78. Pazienza M.T, A. Stellato, M. Vindigni, A. Valarakos, V. Karkaletsis. "Ontology integration in a multilingual e-retail system". Proceedings of the Human Computer Interaction International (HCII'2003), Heraklion, Crete, June 22-27, 2003.
  79. G. Petasis, V. Karkaletsis, G. Paliouras and C. D. Spyropoulos. "Using the Ellogon Natural Language Engineering Infrastructure", Proceedings of the Workshop on Balkan Language Resources and Tools at the 1st Balkan Conference on Informatics (BCI), Thessaloniki, Greece, 2003. (abstract) (pdf)
  80. V. Karkaletsis and C.D. Spyropoulos. "Cross-lingual Information Management from Web pages", Proceedings of the 9th Panhellenic Conference in Informatics (PCI-2003) , Thessaloniki, 21-23 November, 2003.
  81. G. Petasis, V. Karkaletsis, G. Paliouras, I. Androutsopoulos and C. D. Spyropoulos, "Ellogon: A New Text Engineering Platform,". Proceedings of the International Conference on Language Resources and Evaluation (LREC), vol. I, pp. 72-78, Las Palmas, Spain, May, 2002. (abstract) (pdf)
  82. G. Sigletos, G. Paliouras, V. Karkaletsis, "Role Identification From Free Text Using Hidden Markov Models,". Proceedings of the Panhellenic Conference in Artificial Intelligence (SETN), Lecture Notes in Artificial Intelligence, n. 2308, Springer Verlag, pp. 167-178, 2002. (abstract) (pdf)
  83. C.Grover, S.McDonald, V.Karkaletsis, D.Farmakiotou, G.Samaritakis, G.Petasis, M.T.Pazienza, M.Vindigni, F.Vichot and F.Wolinski. "Multilingual XML-Based Named Entity Recognition", Proceedings of the International Conference on Language Resources and Evaluation (LREC-2002), Las Palmas, Spain, May 2002.
  84. D. Farmakiotou, V. Karkaletsis, I. Koutsias, G. Petasis, C.D. Spyropoulos. " PatEdit: An Information Extraction Pattern Editor for Fast System Customization". Proceedings of the International Conference on Language Resources and Evaluation (LREC -2002), Las Palmas, Spain, May 2002.
  85. D. Farmakiotou, V. Karkaletsis, G. Samaritakis, G. Petasis, and C.D. Spyropoulos "Named Entity Recognition from Greek Web Pages" , Proceedings Companion Volume of 2nd Hellenic Conference on AI (SETN-02), I.P. Vlahavas and C.D. Spyropoulos (eds), pp. 91-102, 2002.
  86. S.Markantonatou, V.Karkaletsis, Y.Maistros, "An Authoring Tool for Controlled Modern Greek", Proceedings Companion Volume of 2nd Hellenic Conference on AI (SETN-02), I.P. Vlahavas and C.D. Spyropoulos (eds), pp. 165-176, 2002.
  87. I. Androutsopoulos, D. Spiliotopoulos, K. Stamatakis, A. Dimitromanolaki, V. Karkaletsis, and C.D. Spyropoulos "Symbolic Authoring for Multilingual Natural Language Generation" In Methods and Applications of Artificial Intelligence, LNAI 2308, I.P. Vlahavas and C.D. Spyropoulos (eds), 2002, p.p. 131-142.
  88. K. Koutroumbas, G. Paliouras, V. Karkaletsis and C.D. Spyropoulos, "Comparison of Computational Learning Methods on a Diagnostic Cytological Application,". Proceedings of the European Symposium on Intelligent Technologies, Hybrid Systems and their implementation on Smart Adaptive Systems (EUNITE), pp. 500-508, Tenerife, Spain, 2001. (abstract) (pdf)
  89. A. Grigoriadis, G. Paliouras, V. Karkaletsis and C.D. Spyropoulos, "Identifying Word Senses in Greek Text: A comparison of machine learning methods,". Proceedings of the European Workshop on Intelligent Forecasting, Diagnosis and Control (IFDICON), pp. 107-113, Santorini, Greece, 2001. (abstract) (pdf)
  90. G. Petasis, F. Vichot, F. Wolinski, G. Paliouras, V. Karkaletsis, and C.D. Spyropoulos, "Using Machine Learning to Maintain Rule-based Named-Entity Recognition and Classification Systems,". Proceedings of the Annual Meeting of the Association for Computational Linguistics (ACL), pp. 426-433, Toulouse, 2001. (abstract) (pdf)
  91. G. Sakkis, I. Androutsopoulos, G. Paliouras, V. Karkaletsis, C.D. Spyropoulos and P. Stamatopoulos, "Stacking classifiers for anti-spam filtering of e-mail,". Proceedings of the International Conference on Empirical Methods in Natural Language Processing (EMNLP), pp. 44-50, Carnegie Mellon University, 2001. (abstract) (pdf)
  92. M. Vassiliou, S. Markantonatou , V. Karkaletsis, and G. Maistros, "Controlled Greek: Specifications and Implementation". In Proceedings of the 5th International Conference on Greek Linguistics, Paris , 13-15 September 2001.
  93. A. Dimitromanolaki, I. Androutsopoulos and V. Karkaletsis. "A Large-Scale Systemic Functional Grammar of Greek". Proceedings of the 5th International Conference on Greek Linguistics, Sorbonne, France, September 2001.
  94. V. Karkaletsis, G. Samaritakis, G. Petasis, D. Farmakiotou, I. Androutsopoulos, S. Markantonatou, and C.D. Spyropoulos. "A Controlled Language Checker Based on the Ellogon Text Engineering Platform". Proceedings of the 2nd Meeting of the North American Chapter of the Association for Computational Linguistics (NAACL 2001), demonstration notes (companion volume to the proceedings), pp. 74-75, Carnegie Mellon University, Pittsburgh, USA, 2001.
  95. G. Petasis, V. Karkaletsis, D. Farmakiotou, I. Androutsopoulos, and C.D. Spyropoulos, "A Greek Morphological Lexicon and its Exploitation by a Greek Controlled Language Checker". Proceedings of the 8 th Panhellenic Conference on Informatics (EPY 2001), Nicosia, Cyprus, 2001.
  96. E. Kopanaki, V. Karkaletsis, C.D. Spyropoulos, N. Avradinis, N. Fakotakis, Th. Kalamboukis, B. Kladis, Y. Lazarou, Th. Panayiotopoulos, D. Spinellis, "MITOS: An Integrated Web-based System for Information Management" . Proceedings of the 8th Panhellenic Conference on Informatics , Nicosia , Cyprus , November 8-10, 2001.
  97. G. Petasis, A. Cucchiarelli, P. Velardi, G. Paliouras, V. Karkaletsis, and C.D. Spyropoulos, "Automatic adaptation of proper noun dictionaries through co-operation of machine learning and probabilistic methods". Proceedings of the 23rd ACM SIGIR Conference on R&D in IR (SIGIR), pp. 128-135, Athens, Greece, 2000. (abstract) (pdf)
  98. G. Paliouras, C. Papatheodorou, V. Karkaletsis and C.D. Spyropoulos, "Clustering the Users of Large Web Sites into Communities," Proceedings of the International Conference on Machine Learning (ICML), pp. 719-726, Stanford, California, 2000. (abstract) (pdf)
  99. G. Paliouras, V. Karkaletsis, and C.D. Spyropoulos, "Learning Decision Trees for Named-Entity Recognition and Classification", Proceedings of the Workshop "Machine Learning for Information Extraction", European Conference in Artificial Intelligence, Berlin, Germany, 2000. (abstract) (pdf)
  100. G. Petasis, S. Petridis, G. Paliouras, V. Karkaletsis, S. Perantonis, and C.D. Spyropoulos, "Symbolic and Neural Learning for Named-Entity Recognition". Proceedings  of the Symposium on Computational Intelligence and Learning (COIL), pp. 58-66, Chios, Greece, 2000. (abstract) (pdf)
  101. I. Androutsopoulos, G. Paliouras, V. Karkaletsis, G. Sakkis, C.D. Spyropoulos and P. Stamatopoulos. "Learning to Filter Spam E-Mail: A Comparison of a Naive Bayesian and a Memory-Based Approach". Proceedings of the Workshop "Machine Learning and Textual Information Access", European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD), pp. 1-13, Lyon, France, 2000. (abstract) (pdf)
  102. G. Paliouras, V. Karkaletsis, I. Androutsopoulos, and C.D. Spyropoulos, "Learning Rules for Large-Vocabulary Word Sense Disambiguation: A Comparison of Various Classifiers". Proceedings of the 2nd International Conference on Natural Language Processing (NLP), Patra, Greece. Lecture Notes in Artificial Intelligence, 1835, pp. 383-394, Springer, 2000. (abstract) (pdf)
  103. G. Paliouras, C. Papatheodorou, V. Karkaletsis, P.Tzitziras and C.D. Spyropoulos, "Large-Scale Mining of Usage Data on Web Sites," AAAI Spring Symposium on Adaptive User Interfaces, Stanford, California, 2000. (abstract) (pdf)
  104. D. Farmakiotou, V. Karkaletsis, J. Koutsias, G. Sigletos, C.D. Spyropoulos and P. Stamatopoulos, "Rule-based Named Entity Recognition for Greek Financial Texts", Proceedings of the Workshop on Computational lexicography and Multimedia Dictionaries (COMLEX 2000) , pp. 75-78, Patras, Greece, September 2000.
  105. G. Paliouras, C. Papatheodorou, V. Karkaletsis, C.D. Spyropoulos and P.Tzitziras, "From Web Usage Statistics to Web Usage Analysis," Proceedings of the IEEE International Conference on Systems Man and Cybernetics, v. II, pp. 159-164, 1999. (abstract) (pdf)
  106. G. Paliouras, V. Karkaletsis and C.D. Spyropoulos, "Learning Rules for Large Vocabulary Word Sense Disambiguation," Proceedings of the International Joint Conference on Artificial Intelligence (IJCAI '99), v. 2, pp. 674-679, 1999. (abstract) (pdf)
  107. G. Paliouras, V. Karkaletsis, C. Papatheodorou and C.D. Spyropoulos, "Exploiting Learning Techniques for the Acquisition of User Stereotypes and Communities," Proceedings of the International Conference on User Modeling (UM), CISM Courses and Lectures, n. 407, pp. 169-178, Springer-Verlag, 1999. (abstract)  (postscript ) (pdf)
  108. G. Petasis, G. Paliouras, V. Karkaletsis, C.D. Spyropoulos and I. Androutsopoulos,  "Using Machine Learning Techniques for Part-of-Speech Tagging in the Greek Language", Proceedings of the 7th Hellenic Conference on Informatics, Ioannina, Greece, 1999. (abstract)  (pdf)
  109. G. Paliouras, C. Papatheodorou, V. Karkaletsis, C.D. Spyropoulos and V. Malaveta, "Learning User Communities for Improving the Services of Information Providers," European Conference on Research and Advanced Technology for Digital Libraries  (ECDL), Lecture Notes in Computer Science, n. 1513, pp. 367-384, Springer-Verlag, 1998. (abstract)  (pdf)
  110. G. Paliouras, V. Karkaletsis and C.D. Spyropoulos, "Machine Learning for Domain-Adaptive Word Sense Disambiguation," Proceedings of the Workshop on Adapting Lexical and Corpus Resources to Sublanguages and Applications, International Conference on Language Resources and Evaluation, Granada, Spain, May 26, 1998. (abstract)  (pdf)
  111. V. Karkaletsis, and Spyropoulos, C.D., 1998. "Towards a User friendly Information Society" . In Proceedings of the Conference "ELSNET in Wonderland", Soestenberg, Holland, 25-27 March 1998, pp. 66-72.
  112. V. Karkaletsis, and Spyropoulos, C.D., 1998. "Towards a User-friendly Information Society: the role of Software Globalisation, User Modelling and Information Extraction Technologies" . In Proceedings of the Panhelennic Conference on New Information Technology - NIT'98, 8-10 Oct. 1998, Athens.
  113. V. Karkaletsis, Spyropoulos, C.D., Benaki, E. "Customising Information Extraction Templates according to Users Interests", Proceedings of the Workshop "Lexically Driven Information Extraction - LDIE'97", Frascatti, Rome, July 16, 1997, pp. 23-38.
  114. E. Benaki, Karkaletsis, V. and Spyropoulos, C.D. "Integrating User Modeling into Information Extraction: the UMIE Prototype", Proceedings of the 6th International Conference on User Modeling (UM97), CISM No 383, Springer Wien New York, pp. 55-58, 1997.
  115. E. Benaki, Karkaletsis, V., and Spyropoulos, C.D . "User Modeling in WWW: the UMIE Prototype" , Proceedings of the Workshop "Adaptive Systems and User Modeling on the World Wide Web", in the 6th International Conference on User Modeling, Sardinia, Italy, June 2, 1997, pp. 13-21.
  116. V. Karkaletsis, and Spyropoulos, C.D., 1997. "A Knowledge-based Organisation of Lexical Resources to support Multilingual Information Retrieval in Software Localisation" . In Proceedings of the 1997 AAAI Symposium on Cross-Language and Speech Retieval, March 24-26, 1997, Stanford University, CA, Technical Report SS-97-05 (ISBN 1-57735-040-5), pp. 120-126.
  117. C.D. Spyropoulos, and Karkaletsis, V., 1997. "Report on the MULSAIC'96 Workshop". In Proceedings of the 1997 AAAI Symposium on Cross-Language and Speech Retieval , March 24-26, 1997, Stanford University, CA, Technical Report SS-97-05 (ISBN 1-57735-040-5), pp. 217-219.
  118. V. Karkaletsis, and Spyropoulos, C.D. "Exploiting an AI-based Approach in Multilingual Software Industry", in Proceedings of the ECAI-96 Workshop on Multilinguality in Software Industry: The AI Contribution (MULSAIC'96), Budapest , Hungary, 12 August 1996.
  119. C.D. Spyropoulos, and Karkaletsis, V. "On line Generation of Messages: A Knowledge-based Approach" , in Proceedings of the ECAI-96 Workshop on Multilinguality in Software Industry: The AI Contribution (MULSAIC'96), Budapest , Hungary, 12 August 1996.
  120. C.D. Spyropoulos, Karkaletsis, V., Vouros, G., Honkela, T., Lagus, K., Lehtola, A. "Investigating On Line Message Generation in Software Applications: The GLOSSASOFT Results", in Proceedings of the ERCIM Workshop Towards User Interfaces for All: Current Efforts and Future Trends, Heraklion, Crete, Greece, 30-31 October 1995.
  121. V. Karkaletsis, Spyropoulos C.D., Vouros G. "A Knowledge-based Approach for Organising Terminological Data and Generating Messages in Software Applications", in Proceedings of the Workshop Language Engineering on the Information Highway, Santorini, Greece, 26-30 September 1994.
  122. V. Karkaletsis, Spyropoulos, C.D., 1994. "Software Localisation and the GLOSSASOFT project" . The LISA Forum, Heidelberg 21-22 April 1994.
*Institute of Informatics and Telecommunications | **National Center for Scientific Research "Demokritos"