User Behaviors Lend a Helping Hand: Learning Paraphrase Query Patterns from Search Log Sessions Shiqi Zhao author Haifeng Wang author Ting Liu author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication zhao-etal-2012-user https://aclanthology.org/C12-1192/ 2012-12 3137 3152