Learning the Latent Topics for Question Retrieval in Community QA Li Cai author Guangyou Zhou author Kang Liu author Jun Zhao author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication cai-etal-2011-learning https://aclanthology.org/I11-1031/ 2011-11 273 281