CLICK: Contrastive Learning for Injecting Contextual Knowledge to Conversational Recommender System Hyeongjun Yang author Heesoo Won author Youbin Ahn author Kyong-Ho Lee author 2023-05 text Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics Andreas Vlachos editor Isabelle Augenstein editor Association for Computational Linguistics Dubrovnik, Croatia conference publication yang-etal-2023-click 10.18653/v1/2023.eacl-main.137 https://aclanthology.org/2023.eacl-main.137/ 2023-05 1875 1885