2User Behaviors Lend a Helping Hand: Learning Paraphrase Query Patterns from Search Log Sessionsexperiments (Section 5.3). 2.2 Search Log Mining Search engine query logs have been extensively exploited. Especially, there...to paraphrase: An unsupervised approach using multiple-sequence alignment. In Proceedings of HLT-NAACL, pages 16–23. 3149...