Yuanhua Lv, ChengXiang Zhai. "Query Likelihood with Negative Query Generation". To appear in proceedings of the 21st ACM International Conference on Information and Knowledge Management  (CIKM'12), 2012. [pdf]

Bin Tan, Yuanhua Lv, ChengXiang Zhai. "Mining long-lasting exploratory user interests from search history". To appear in proceedings of the 21st ACM International Conference on Information and Knowledge Management  (CIKM'12), 2012.

Yuanhua Lv, Dimitrios Lymberopoulos, and Qiang Wu. "An Exploration of Ranking Heuristics in Mobile Local Search". In Proceedings of the 35th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'12), pages 295-304, 2012. [pdf]

Yuanhua Lv, ChengXiang Zhai. "A Log-logistic Model-based Interpretation of TF Normalization of BM25". In Proceedings of the 34th European Conference on Information Retrieval  (ECIR'12), pages 244-255, 2012. [pdf]

Yuanhua Lv, ChengXiang Zhai. "Lower-Bounding Term Frequency Normalization". In Proceedings of the 20th ACM International Conference on Information and Knowledge Management  (CIKM'11), pages 7-16, 2011. Best Student Paper Award. [pdf] [Source code download]

Yuanhua Lv, ChengXiang Zhai. "Adaptive Term Frequency Normalization for BM25". Poster paper. In Proceedings of the 20th ACM International Conference on Information and Knowledge Management  (CIKM'11), pages 1985-1988, 2011. [pdf]

Yuanhua Lv, ChengXiang Zhai, and Wan Chen. "A Boosting Approach to Improving Pseudo-Relevance Feedback". In Proceedings of the 34th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'11), pages 165-174, 2011. [pdf]

Yuanhua Lv and ChengXiang Zhai. "When Documents Are Very Long, BM25 Fails!".  Poster paper. In Proceedings of the 34th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'11), pages 1103-1104, 2011. [pdf] [Source code download]

Yuanhua Lv, Taesup Moon, Pranam Kolari, Zhaohui Zheng, Xuanhui Wang, and Yi Chang. "Learning to Model Relatedness for News Recommendation". In Proceedings of the 20th International World Wide Web Conference (WWW'11), pages 57-66, 2011. [pdf]

Yuanhua Lv and ChengXiang Zhai. "Positional Relevance Model for Pseudo-Relevance Feedback". In Proceedings of the 33rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'10), pages 579-586, 2010.  [pdf] [Source code download]

Yuanhua Lv and ChengXiang Zhai. "Positional Language Models for Information Retrieval". In Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR'09), pages 299-306, 2009. [pdf] [Source code download]

Yuanhua Lv and ChengXiang Zhai. "Adaptive Relevance Feedback in Information Retrieval". In Proceedings of the 18th ACM International Conference on Information and Knowledge Management (CIKM'09), pages 255-264, 2009. [pdf]

Yuanhua Lv and ChengXiang Zhai. "A Comparative Study of Methods for Estimating Query Language Models with Pseudo Feedback". Short paper. In Proceedings of the 18th ACM International Conference on Information and Knowledge Management (CIKM'09), pages 1895-1898, 2009. [pdf]

Yuanhua Lv, Jing He, V.G.Vinod Vydiswaran, Kavita Ganesan, ChengXiang Zhai. "A Study of Term Proximity and Document Weight Regularization in Pseudo Relevance Feedback -- UIUC at TREC2009 Million Query Track". In online Proceedings of the 18th Text REtrieval Conference (TREC'09), Gaithersburg, Maryland, November 2009. (oral presentation). [pdf]

Yuanhua Lv and ChengXiang Zhai. "A Study of Adaptive Relevance Feedback -- UIUC TREC2008 Relevance Feedback Experiments". In online Proceedings of the 17th Text REtrieval Conference (TREC'08), Gaithersburg, Maryland, November 2008. (oral presentation). [pdf]

Yuanhua Lv, Le Sun, Junlin Zhang, Jian-Yun Nie, Wan Chen, and Wei Zhang, "An Iterative Implicit Feedback Approach to Personalized Search". In Proceedings of the 21st International Conference on Computational Linguistics and 44th Annual Meeting of the Association for Computational Linguistics (ACL'06), pages 585-592, Sydney, July 2006.  [pdf]