On the number of terms used in automatic query expansion

Author： Ogilvie Paul   Voorhees Ellen   Callan Jamie  

Publisher： Springer Publishing Company

ISSN： 1386-4564

Source： Information Retrieval, Vol.12, Iss.6, 2009-12, pp. : 666-679

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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