7 years of research experience in Information Retrieval (IR) and C/C++ development experience.

Developed 21 bug-free retrieval systems on big data collections of four Text Retrieval Conference (TREC) conferences.

Developed the best retrieval system out of 35 systems in Million Query task of TREC 2009.

Improved the diversity performance of Yahoo! query suggestion results by 35.2% on an enterprise dataset.

Developed two social networking websites in my spare time and worked on multiple projects simultaneously.

Teamwork with researchers from Facebook, HP lab, Chinese University of Hong Kong and USAToday in different projects.

Leadership role in a research project and a development project.

Expertise in Perl, C/C++, PHP, JavaScript, SQL, CSS, Linux, Indri system, Lucene system, Information Retrieval, data mining, machine learning, distributed system, user interface for PC and mobile devices.

University of Delaware. 2008 - 2013 (expected). Ph.D candidate. GPA: 3.9
Award: "Computer System & Networking Graduate Faculty Award".

Harbin Institute of Technology, China. Department of Computer Science. 2002 - 2008. B.S. and M.S. degrees.
Award: "Outstanding graduate of Heilongjiang Province", 2008.
Highest GAP among 149 undergraduate students in our department, 2006.

Wei Zheng, Hui Fang, Hong Cheng and Xuanhui Wang. "Diversifying Search Results through Pattern-based Subtopic Modeling". To appear in International Journal On Semantic Web and Information Systems. (pdf)

Wei Zheng, Xuanhui Wang, Hui Fang, and Hong Cheng. "Coverage-based search result diversification". Journal of Information Retrieval, 2012.(pdf)

Wei Zheng and Hui Fang, "Query Aspect based Term Weighting Regularization in Information Retrieval". In Proceedings of the 32nd European Conference on Information Retrieval, 2010. (ECIR'10) (pdf)

Wei Zheng, Yu Zhang, Yu Hong, Jili Fan and Ting Liu, "Topic Tracking Based on Keywo rds Dependency Profile", In Proceedings of the 2008 Asia Information Retrieval Symposium, pages 1 29-140, 2008. (AIRS'08) (pdf)

Wei Zheng, Yu Zhang, Bowei Zou, Yu Hong and Ting Liu, "Research of Chinese Topic Tracking Based on Relevance Model". In Proceedings of the 9th Chinese National Conference Computational Linguistics, 2007. ([pdf])

Wei Zheng, Hui Fang, Conglei Yao and Min Wang. "Leveraging Integrated Information t o Extract Query Subtopics for Search Result Diversification". Submitted to Journal of Information Retrieval

Wei Zheng, Hui Fang and Conglei Yao, "Exploiting Concept Hierarchy for Result Diversification". In Proceedings of 21st ACM International Conference on Information and Knowledge Management, 2012. (CIKM'12) (short paper, pdf)

Wei Zheng, Hui Fang, Conglei Yao, and Min Wang. "Search result diversification for enterprise search". In proceedings of 20th ACM International Conference on Information and Knowledge Management, 2011. (CIKM'11) (poster, pdf)

Wei Zheng and Hui Fang. "A comparative study of search result diversification methods". In Proceedings of DDR'11, 2011. (pdf)

Wei Zheng and Hui Fang. "A Retrieval System based on Sentiment Analysis". In Proceedings of HCIR Challenge, 2010. (pdf)

Xitong Liu, Wei Zheng and Hui Fang. "An Exploration of Ranking Models and Feedback Method for Related Entity Finding". (Submitted to Information Processing and Management)