Ivan Koychev 's Home page
Department of Information Research
Institute of Mathematics and Informatics
- BAS
Acad. G. Bonchen Street, bl. 8,
Sofia – 1113, BULGARIA
Tel: (+359-2) 979-3802, Fax: (+359-2) 971-36-49
E-mail: ikoychev(at)math.bas.bg
URL: http://www.math.bas.bg/~koychev
Research
Interests
Data/Text Mining
Machine Learning
Information Retrieval
User Modelling
Recent Papers
Koychev I., Experiments with Two Approaches for Tracking Drifting Concepts” – will appear in “Serdica Journal of Computing” in issue #1, 2006.
Koychev I., Lothian R. Tracking Drifting Concepts by Time Window Optimisation. In: Research and Development in Intelligent Systems XXII Proceedings of AI-2005, the Twenty-fifth SGAI International Conference on Innovative Techniques and Applications of Artificial Intelligence. Bramer, Max; Coenen, Frans; Allen, Tony (Eds.), Springer, London p.46-59
Wiratunga, N., Lothian, R., Chakraborti, S., and Koychev, I. (2005): A Propositional Approach to Textual Case Indexing. In Jorge, A., Torgo, L., Brazdil, P., Camacho, R., Gama J. (Eds.): Knowledge Discovery in Databases: PKDD 2005, LNCS 3721 Springer, Heidelberg p. 380-391
Harper, DJ., Muresan, G., Liu, B., Koychev, I., Wettschereck, D., and Wiratunga N. The Robert Gordon University’s HARD Track Experiments at TREC 2004. Proceeding of the High Accuracy Retrieval from Documents (TREC 2004)
Wiratunga, N., Koychev, I., Massie, S. (2004). Feature Selection and Generalisation for Retrieval of Textual Cases – In Proceeding of the 7-th European Conference on Case-Based Reasoning. Lecture Notes in Artificial Intelligence, Springer-Verlag, Berlin, Heidelberg, New York (best paper award).
Harper, D.J., Koychev, I., Sun, Y. and Pirie I. (2004): Within-document Retrieval: A User-Centred Evaluation of Relevance Profiling. Information Retrieval, 7, 265-290, 2004, Kluwer Academic Publishers.
Harper, D.J., Koychev, I. and Sun, Y. (2003). Query-Based Document Skimming: A User-Centred Evaluation of Relevance Profiling. In: Proceedings of 25-th European Conference on Information Retrieval. Lecture Notes in Computer Science. Springer-Verlag.(15 pages, PDF 216 KB).
Koychev, I, Tracking Changing User Interests through Prior-Learning of Context. In: de Bra, P., Brusilovsky, P., Conejo, R. (eds.): Adaptive Hypermedia and Adaptive Web Based Systems. Lecture Notes in Computer Science, Vol. 2347. Springer-Verlag, Berlin Heidelberg New York (2002) 223-232. (10 pages, PDF 120 KB).
Koychev, I. Gradual Forgetting for Adaptation to Concept Drift. In Proceedings of ECAI 2000 Workshop Current Issues in Spatio-Temporal Reasoning, Berlin 2000 (PDF 77 KB).
Koychev, I. Schwab, I. Adaptation to Drifting User's Interests. In Proceedings of ECML2000 Workshop: Machine Learning in New Information Age, Barcelona, Spain, 2000 (PDF, 170 KB).
Schwab, I., Kobsa, A., and Koychev, I. Learning about Users from Observation. Papers from the 2000 AAAI Spring Symposium. Menlo Park, CA: AAAI Press. (4 pages, PDF 34 KB).
Schwab, I. Pohl, W. and Koychev, I. Learning to Recommend from Positive Evidence, Proceedings of International Conference on Intelligent User Interfaces 2000, New Orleans, Louisiana, USA, ACM Press. (7 pages, PDF 109 KB).
Pohl, W., Schwab, I. and Koychev, I. Learning About the User: A General Approach and Its Application, in Proceeding of IJCAI'99 Workshop "Learning about Users", Stockholm, Sweden, 1999. (8 pages, PDF 226 KB).
Membership
BCS Information Retrieval Specialist Group
BCS Specialist Group on Artificial Intelligence
For further information about me
please, look at my CV
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