Rishabh Mehrotra, Emine Yilmaz. Extracting Hierarchies of Search Tasks & Subtasks via a Bayesian Nonparametric Approach. In Noriko Kando, Tetsuya Sakai, Hideo Joho, Hang Li, Arjen P. de Vries, Ryen W. White, editors, Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017. pages 285-294, ACM, 2017. [doi]