Large-scale Analysis of Counseling Conversations: An Application of Natural Language Processing to Mental Health Tim Althoff author Kevin Clark author Jure Leskovec author 2016 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal althoff-etal-2016-large 10.1162/tacl_a_00111 https://aclanthology.org/Q16-1033/ 2016 4 463 476