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Query Expansion for Answer Document Retrieval in Chinese Question Answering System

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4 Author(s)
Zheng-Tao Yu ; The School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650051, P. R. China; Department of Computer Science & Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China; E-MAIL: ; Zhi-Yun Zheng ; Shi-Ping Tang ; Jian-Yi Guo