Automatic query reformulation with syntactic operators to alleviate search difficulty

Huizhong Duan, Rui Li, ChengXiang Zhai. Automatic query reformulation with syntactic operators to alleviate search difficulty. In Craig Macdonald, Iadh Ounis, Ian Ruthven, editors, Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011. pages 2037-2040, ACM, 2011. [doi]

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