ICTNET at Web Track 2009 Ad-hoc task
Feng Guan, Xiaoming Yu, Zeying Peng, Hongbo Xu, Yue Liu, Linhai Song, Xueqi Cheng · 2009
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. 1.