TREC12 HARD Track at ISCAS

Statistical model in retrieval has been shown to perform well empirically. Extended Boolean model has been widely used in business system for its easiness to be complemented and not bad results. In this paper, a statistical model and modified Boolean model and natural language processing techniques, shallow query understanding techniques are used and results show that even with very limited training corpus, an appropriate statistical model can greatly improve the performance. .

• Type: Conference
• Year: 2003
• Where: TREC
• Authors: Zeng Wu, Lin Du, Le Sun, Shiwei Ye
• Keywords: Boolean Model, Extended Boolean Model, Statistical Model, TREC 2003, TREC 2008