ICTNET at Web Track 2009 Ad-hoc Task
نویسندگان
چکیده
Feng Guan, Xiaoming Yu, Zeying Peng, Hongbo Xu, Yue Liu, Linhai Song,Xueqi Cheng 1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing, 100190 2. Graduate School of Chinese Academy of Sciences, Beijing 100190 Abstract This paper is about the work done for ad-hoc task of TREC 2009 Web Track. We introduce three methods for this task, including two improved BM25 models and query expansion. The results of these models indicate that both minimum window and query expansion could improve BM25 model.
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