Filtering before Iteratively Referring for Knowledge-Grounded Response Selection in Retrieval-Based Chatbots Jia-Chen Gu author Zhenhua Ling author Quan Liu author Zhigang Chen author Xiaodan Zhu author 2020-11 text Findings of the Association for Computational Linguistics: EMNLP 2020 Trevor Cohn editor Yulan He editor Yang Liu editor Association for Computational Linguistics Online conference publication gu-etal-2020-filtering 10.18653/v1/2020.findings-emnlp.127 https://aclanthology.org/2020.findings-emnlp.127/ 2020-11 1412 1422