Review Topic Discovery with Phrases using the Pólya Urn Model Geli Fei author Zhiyuan Chen author Bing Liu author 2014-08 text Proceedings of COLING 2014, the 25th International Conference on Computational Linguistics: Technical Papers Junichi Tsujii editor Jan Hajic editor Dublin City University and Association for Computational Linguistics Dublin, Ireland conference publication fei-etal-2014-review https://aclanthology.org/C14-1063/ 2014-08 667 676