Towards context-aware search by learning a very large variable length hidden markov model from search logs.

Huanhuan Cao Daxin Jiang Jian Pei Enhong Chen Hang Li Towards context-aware search by learning a very large variable length hidden markov model from search logs. 191-200 2009 WWW http://doi.acm.org/10.1145/1526709.1526736 conf/www/2009 db/conf/www/www2009.html#CaoJPCL09