Ivan Koychev's Home page
Department of Software Engineering,
Faculty
of Mathematics and Informatics, University
of Sofia
5 J. Bouchier Street, Sofia 1164, BULGARIA
Office: 125, Tzarigradsko shose Blvd. bl. 2, fl.
3, room 310
Phone:+359(2) 971 04 00 E-mail:
ivan.koychev [at] fmi.uni-sofia.bg
Also Adjunct
Senior Researcher at Information
Systems Department at Institute of Mathematics
and Informatics -
BAS
Teaching
Courses
Artificial Intelligence, Information Retrieval, Data Mining
PhD Students
Milen Chechev, Stefan Stefanov, Boris Kraychev, Gergana Lazarova, Todor Tsonkov
Research
Interests
Data/Text
Mining;
Information Retrieval; Machine
Learning, User Modelling
My research profile on Google
Scholar
Current Projects
Recent Publications
Kraychev, B. and Koychev, I. Computationally Effective Algorithm for Information Extraction and Online Review Mining. In Proc. of International Conference on Web Intelligence, Mining and Semantics June 13-15, 2012, Craiova, Romania, ACM.
Ясен Кипров, Иван Койчев, Борис Крайчев – Социален подход към семантичното анотиране на E-книги. Сборник доклади на Петата Национална конференция „Образованието в информационното общество”, Пловдив, 31.05.-01.06.2012 г., АРИО.
Александър Чомаков, Иван Койчев, Александър Григоров – Уеб базирана услуга за автоматично извличане на модел на потребителски интереси. Сборник доклади на Петата Национална конференция „Образованието в информационното общество”, Пловдив, 31.05.-01.06.2012 г., АРИО.
Peshterliev, S. and Koychev, I. Semantic Retrieval Approach to Factoid Question Answering for Bulgarian. Proc. of Int. Conference S3T'11 (Track Intelligent Content and Semantic), Burgas 1-3 September 2011. Advances in Intelligent and Soft Computing series, Springer.
Kraychev, B. and Koychev, I. Classification of Online Reviews by Computational Semantic Lexicons. Proc. of Int. Conference S3T'11 (Track Intelligent Content and Semantic), Burgas 1-3 September 2011, Advances in Intelligent and Soft Computing series, Springer.
Stefanov, K., Nikolov, R., Boytchev, P., Stefanova, E., Georgiev, A., Koychev, I., Nikolova, N., and Grigorov, A. Emerging Models and e-Infrastructures for Teacher Education. In Proc. of ITHET 2011, IEEE publisher.
Chechev, M. and Koychev, I. Social Reading and Book Sharing. Proc. of International Conference S3T'10 (Track Intelligent Content and Semantic), Varna, 11-12 September 2010.
Damova, M. and Koychev, I. Query-Based Summarization: A survey. Proc. of Int. Conference S3T'10 (Track Intelligent Content and Semantic), Varna, 11-12 September 2010.
Kiprov Y. and Koychev, I. Online Authoring System with Semi Automatic Annotation and Visual Knowledge Representation. Proc. of Int. Conference S3T'10 (Track Intelligent Content and Semantic), Varna, 11-12 September 2010.
Koychev I., Dicheva D. and Nikolov, R.: SmartBook: Semantics Inside. Serdica Journal of Computing. (4), 2010, p. 263-278.
Koychev I., Nikolov, R. and Dicheva D.: SmartBook: The New Generation e-Book Meets University 2.0, International Conference On Software, Services & Semantic Technologies 28,29 October 2009
Chenkova E. & Koychev I.: A Just-In-Time Information Retrieval Agent that Provides Context Aware Support of Text Creation. Proc. of Int. Conference S3T’09 (Track Intelligent Content and Semantic), Sofia, 28,29 October’09
Stamenov A. and Koychev I.: Web-based CBR System for Support Medical Diagnosis. International Conference On Software, Services & Semantic Technologies 28, 29 October 2009
Koychev I., Nikolov, R. and Dicheva D.: SmartBook: The New Generation e-Book. BooksOnline'09 Workshop: 2nd Workshop on Research Advances in Large Digital Book Collections, organised in conjunction with ECDL 2009, Corfu, October 2, 2009.
Koychev I., Nikolov, R. and Dicheva D.: SmartBook –The Future E-Book And Educational Hypermedia, Proceedings of National conference "Education in Information Society", May, 11-12, Plovdiv, Editor Peter Barnev, published by ADIS p.30-37, ISBN 978-954-8986-30-4.
Koychev I., Approaches for Learning Classifiers of Drifting Concept (Invited talk). In Security Informatics and Terrorism-Patrolling the Web, proceedings of NATO Advanced Research Workshops, Ben-Gurion University of the Negev, Israel. 4-5 June 2007, ISO Press.
Koychev I., Experiments with Two Approaches for Tracking Drifting Concepts. In Serdica Journal of Computing (1) 2007, p.27-44.
Koychev I.: Computer games - the new media in Education, (Invited talk). Proceeding of the National Conference: “Education in Information Society”, Plovdiv, October 13-14, 2006 (in Bulgarian)
Boytchev P., Bontchev B., Nikolov R., Oliveira M., and Koychev I.: Designing a Toolset for the PRIME Virtual Business Environment. 10th Workshop on Experimental Interactive Learning in Industrial Management; IFIP WG5.7 SIG, Trondheim, Norway, June 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 25-th 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
Wiratunga, N., Lothian, R., Chakraborti, S., & Koychev, I. (2005). Textual Feature Construction from Keywords. Textual CBR Workshop Proceedings of the Sixth International Conference on Case-Based Reasoning. Chicago, IL: Depaul University
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. PDF.
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. PDF.
Koychev, I. Gradual Forgetting for Adaptation to Concept Drift. In Proceedings of ECAI 2000 Workshop Current Issues in Spatio-Temporal Reasoning, Berlin 2000 PDF.
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.
Schwab, I., Kobsa, A., and Koychev, I. Learning about Users from Observation. Papers from the 2000 AAAI Spring Symposium. Menlo Park, CA: AAAI Press. PDF.
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. PDF
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. PDF
Community Services
Membership
Association for
the Development of the Information Society
(Chair of the Man. Board)
Information Retrieval Facility
BCS
Information Retrieval Specialist Group
BCS
Specialist Group on Artificial Intelligence
Conferences
2013 - PC member: 5th Int. Conf. on Computational Collective Intelligence Technologies and Applications, 11-13 September 2013, Craiova
2013 - PC member: WEB 2013 conference, Seville.
2012 - PC member: 5th IRF Conference, The Vienna University of Technology, July 2-3, 2012, Vienna.
2012 - PC member: Int. Conference on Web Intelligence, Mining and Semantics, June 13-15, 2012, Craiova.
2011, 2012, 2013 - PC co-Chair: National conference “Education in Information Society”, Plovdiv.
2011 - PC member: IEEE Symposium Series in Computational Intelligence 2011.
2010, 2011 - PC member: International Conference on Knowledge-Based and Intelligent Information & Engineering Systems
2009, 2010, 2011 Track Chair: Intelligent Content and Semantics on Int. Conf. on Software, Services & Semantic Technologies, Bulgaria.
2010, 2011, 2012 - BooksOnline Workshop: Research Advances in Large Digital Book Repositories and Complementary, http://research.microsoft.com/booksonline10/
2009 - Organiser of S3T’2009 Workshop: The Future of E-Books, October 30, 2009, Sofia, Bulgaria
2006, 2007, 2008, 2009, 2010, 2011, 2012 PC member of SGAI International Conference on Innovative Techniques and Applications of Artificial Intelligence, Cambridge, UK,
2007, 2008, 2009, 2010, 2011, 2013 PC member: IADIS e-Society Conference;
2006, 2008, 2010 - PC member: National conference “Education in Information Society”, Plovdiv.
2004 - Non PC member reviewer for IEEE International Conference of Data Mining 2004;
Journals reviews
2010 – 2012 - Knowledge and Information Systems Journal. Springer.
2010 - Machine Learning Journal. Springer.
2009 - IEEE Transactions on Neural Networks
2005 - iEEE journal of Computers & Industrial Engineering;
2002 - Applied Artificial Intelligence, special issue on Artificial Intelligence for Cultural Heritage and Digital Libraries;
For further information please, look at my CV
Last revised: January 25, 2013