user- ACM SIGIR'01 workshop on Mathematical /Formal Methods in IR, 2001., (2001)
- WWW '07: Proceedings of the 16th international conference on World Wide Web, page 541--550. New York, NY, USA, ACM Press, (2007)
- K-CAP '05: Proceedings of the 3rd international conference on Knowledge capture, page 219--220. New York, NY, USA, ACM Press, (2005)
- Proceedings of the Human Language Technologies Conference 2004 HLT-NAACL'04, page 1--8. Boston, Massachusetts, USA, Association for Computational Linguistics, (May 2004)
- SAC '05: Proceedings of the 2005 ACM symposium on Applied computing, page 1059--1064. New York, NY, USA, ACM, (2005)
- HICSS '03: Proceedings of the 36th Annual Hawaii International Conference on System Sciences HICSS'03 - Track 4, Washington, DC, USA, IEEE Computer Society, (2003)
- SIGIR '04: Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval, page 297--304. New York, NY, USA, ACM Press, (2004)
- KDD '02: Proceedings of the eighth ACM SIGKDD international conference on Knowledge discovery and data mining, page 688--693. New York, NY, USA, ACM, (2002)
