Representation Learning Using Multi-Task Deep Neural Networks for Semantic Classification and Information Retrieval Xiaodong Liu author Jianfeng Gao author Xiaodong He author Li Deng author Kevin Duh author Ye-yi Wang author 2015-may–jun text Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Rada Mihalcea editor Joyce Chai editor Anoop Sarkar editor Association for Computational Linguistics Denver, Colorado conference publication liu-etal-2015-representation 10.3115/v1/N15-1092 https://aclanthology.org/N15-1092/ 2015-may–jun 912 921