Approximating true relevance distribution from a mixture model based on irrelevance data.

Peng Zhang Yuexian Hou Dawei Song Approximating true relevance distribution from a mixture model based on irrelevance data. 107-114 2009 SIGIR http://doi.acm.org/10.1145/1571941.1571962 conf/sigir/2009 db/conf/sigir/sigir2009.html#ZhangHS09