Sampling Matters! An Empirical Study of Negative Sampling Strategies for Learning of Matching Models in Retrieval-based Dialogue Systems Jia Li author Chongyang Tao author Wei Wu author Yansong Feng author Dongyan Zhao author Rui Yan author 2019-11 text Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP) Kentaro Inui editor Jing Jiang editor Vincent Ng editor Xiaojun Wan editor Association for Computational Linguistics Hong Kong, China conference publication li-etal-2019-sampling 10.18653/v1/D19-1128 https://aclanthology.org/D19-1128/ 2019-11 1291 1296