L. Zhao and J. Callan. "Effective and efficient structured retrieval" (poster description). In Proceedings of the 18th ACM Conference on Information and Knowledge Management (CIKM 2009). Hong Kong. To appear. paper

L. Zhao, C. Liang and J. Callan. "Extending relevance model for relevance feedback". TREC 2008 Notebook draft. Gaithersburg, Maryland, November 18-21, 2008. pdf (see our TREC poster)

Le Zhao and Jamie Callan. "A generative retrieval model for structured documents". In Proceedings of the 17th ACM Conference on Information and Knowledge Management (CIKM 2008), Napa valley, USA paper slides

M. Bilotti, L. Zhao, E. Nyberg, and J. Callan. "Focused retrieval over richly-annotated collections". SIGIR 2008 Workshop on Focused Retrieval. Singapore. pdf

M. Heilman, L. Zhao, J. Pino, and M. Eskenazi. "Retrieval of reading materials for vocabulary and reading practice". The 3rd Workshop on Innovative Use of NLP for Building Educational Applications. Association for Computational Linguistics.

Y. Zhu, L. Zhao and J. Callan. "Structured queries for legal search". TREC 2007. November 2007. pdf (see our TREC poster) // For the main task, we used boolean queries directly obtained from Legal track. For the routing task, for each query an SVM is trained, and a feedback query is issued that approximates the SVM.

L. Zhao, M. Zhang, S. Ma. "The nature of novelty detection". Journal of Information Retrieval, 9(5): pp. 521-541, November 2006 pdf

L. Zhao, M. Zhang, S. Ma. "The empirical impact of the nature of novelty detection", in Proceeding of the 2nd Asian Information Retrieval Symposium(AIRS2005, poster, Springer LNCS Vol. 3689/2005 pp. 497-502), Jeju Island, Korea, October 13-15, 2005 e-copy

L. Zhao, et al. 2005 "THUIR report for 863 information retrieval evaluation". Journal of Chinese Information, special issue, 2006 (In Chinese) doc

L. Zhao, R. Ceng, M. Zhang, S. Ma, "THUIR at TREC 2005 terabyte track". In Proceedings of the 14th Text REtrieval Conference (TREC 2005) Notebook, November, 2005 pdf

L. Ru, L. Zhao, M. Zhang, S. Ma, "THUIR at TREC 2004 novelty track". In Proceedings of the 13th Text REtrieval Conference (TREC 2004) Notebook, page 81, November, 2004 e-copy

M. Zhang, C. Lin, Y. Liu, L. Zhao, S. Ma, "THUIR at TREC 2003: novelty, robust and web". In Proceedings of the Twelfth Text REtrieval Conference (TREC 2003), page 556 Gaithersburg, Maryland, November 18-21, 2003 e-copy

M. Zhang, R. Song, C. Lin, S. Ma, Z. Jiang, Y. Jin, Y. Liu, L. Zhao, "THU TREC 2002: novelty track experiments". In Proceedings of the Eleventh Text REtrieval Conference (TREC 2002) Gaithersburg, Maryland, November 19-22, 2002 e-copy