User Simulator Assisted Open-ended Conversational Recommendation System Qiusi Zhan author Xiaojie Guo author Heng Ji author Lingfei Wu author 2023-07 text Proceedings of the 5th Workshop on NLP for Conversational AI (NLP4ConvAI 2023) Yun-Nung Chen editor Abhinav Rastogi editor Association for Computational Linguistics Toronto, Canada conference publication zhan-etal-2023-user 10.18653/v1/2023.nlp4convai-1.8 https://aclanthology.org/2023.nlp4convai-1.8/ 2023-07 89 101