A dual index model for contextual information retrieval.

Xiangji Huang Yan Rui Huang Miao Wen A dual index model for contextual information retrieval. 613-614 2005 conf/sigir/2005 SIGIR http://doi.acm.org/10.1145/1076034.1076154 db/conf/sigir/sigir2005.html#HuangHW05