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Conversational recommender systems (CRSs) provide users with an interactive means to express preferences and receive real-time personalized recommendations. The success of these systems is heavily influenced by the preference elicitation…

Human-Computer Interaction · Computer Science 2025-04-22 Ivica Kostric , Krisztian Balog , Ujwal Gadiraju

Research and development on conversational recommender systems (CRSs) critically depends on sound and reliable evaluation methodologies. However, the interactive nature of these systems poses significant challenges for automatic evaluation.…

Information Retrieval · Computer Science 2025-10-08 Nolwenn Bernard , Krisztian Balog

Conversational recommendation systems (CRS) aim to recommend suitable items to users through natural language conversation. However, most CRS approaches do not effectively utilize the signal provided by these conversations. They rely…

Computation and Language · Computer Science 2023-05-24 Raghav Gupta , Renat Aksitov , Samrat Phatale , Simral Chaudhary , Harrison Lee , Abhinav Rastogi

Conversational recommender systems (CRS) enable the traditional recommender systems to explicitly acquire user preferences towards items and attributes through interactive conversations. Reinforcement learning (RL) is widely adopted to…

Information Retrieval · Computer Science 2021-05-21 Yang Deng , Yaliang Li , Fei Sun , Bolin Ding , Wai Lam

The conversational recommendation system (CRS) has been criticized regarding its user experience in real-world scenarios, despite recent significant progress achieved in academia. Existing evaluation protocols for CRS may prioritize…

Computation and Language · Computer Science 2024-05-07 Chen Huang , Peixin Qin , Yang Deng , Wenqiang Lei , Jiancheng Lv , Tat-Seng Chua

Conversational recommender systems (CRSs) capture user preference through textual information in dialogues. However, they suffer from data sparsity on two fronts: the dialogue space is vast and linguistically diverse, while the item space…

Information Retrieval · Computer Science 2025-07-02 Sixiao Zhang , Mingrui Liu , Cheng Long , Wei Yuan , Hongxu Chen , Xiangyu Zhao , Hongzhi Yin

Conversational Recommender Systems (CRSs) aim to provide personalized recommendations by capturing user preferences through interactive dialogues. Explainability in CRSs is crucial as it enables users to understand the reasoning behind…

Computation and Language · Computer Science 2025-10-03 Zhangchi Qiu , Linhao Luo , Shirui Pan , Alan Wee-Chung Liew

Conversational recommender systems have attracted immense attention recently. The most recent approaches rely on neural models trained on recorded dialogs between humans, implementing an end-to-end learning process. These systems are…

Information Retrieval · Computer Science 2022-05-26 Ahtsham Manzoor , Dietmar Jannach

Conversational recommender systems (CRS) aim to recommend high-quality items to users through interactive conversations. To develop an effective CRS, the support of high-quality datasets is essential. Existing CRS datasets mainly focus on…

Computation and Language · Computer Science 2020-11-03 Kun Zhou , Yuanhang Zhou , Wayne Xin Zhao , Xiaoke Wang , Ji-Rong Wen

Recommender systems are embracing conversational technologies to obtain user preferences dynamically, and to overcome inherent limitations of their static models. A successful Conversational Recommender System (CRS) requires proper handling…

Information Retrieval · Computer Science 2020-02-24 Wenqiang Lei , Xiangnan He , Yisong Miao , Qingyun Wu , Richang Hong , Min-Yen Kan , Tat-Seng Chua

Conversational recommender systems (CRS) enable users to articulate their preferences and provide feedback through natural language. With the advent of large language models (LLMs), the potential to enhance user engagement with CRS and…

Human-Computer Interaction · Computer Science 2024-05-24 Yizhe Zhang , Yucheng Jin , Li Chen , Ting Yang

Conversational recommender systems (CRS) generate recommendations through an interactive process. However, not all CRS approaches use human conversations as their source of interaction data; the majority of prior CRS work simulates…

Computation and Language · Computer Science 2023-09-15 Chuang Li , Hengchang Hu , Yan Zhang , Min-Yen Kan , Haizhou Li

Conversational Recommender System (CRS), which aims to recommend high-quality items to users through interactive conversations, has gained great research interest recently. A CRS is usually composed of a recommendation module and a…

Computation and Language · Computer Science 2022-10-10 Lingzhi Wang , Huang Hu , Lei Sha , Can Xu , Kam-Fai Wong , Daxin Jiang

Explanations in conventional recommender systems have demonstrated benefits in helping the user understand the rationality of the recommendations and improving the system's efficiency, transparency, and trustworthiness. In the…

Information Retrieval · Computer Science 2023-05-31 Shuyu Guo , Shuo Zhang , Weiwei Sun , Pengjie Ren , Zhumin Chen , Zhaochun Ren

Conversational recommendation systems (CRS) engage with users by inferring user preferences from dialog history, providing accurate recommendations, and generating appropriate responses. Previous CRSs use knowledge graph (KG) based…

Computation and Language · Computer Science 2021-12-16 Bowen Yang , Cong Han , Yu Li , Lei Zuo , Zhou Yu

Conversational Recommender Systems (CRS) engage users in interactive dialogues to gather preferences and provide personalized recommendations. While existing studies have advanced conversational strategies, they often rely on predefined…

Information Retrieval · Computer Science 2025-04-16 Haibo Sun , Naoki Otani , Hannah Kim , Dan Zhang , Nikita Bhutani

Conversational Recommender Systems (CRSs) in E-commerce platforms aim to recommend items to users via multiple conversational interactions. Click-through rate (CTR) prediction models are commonly used for ranking candidate items. However,…

Information Retrieval · Computer Science 2021-05-03 Chi-Man Wong , Fan Feng , Wen Zhang , Chi-Man Vong , Hui Chen , Yichi Zhang , Peng He , Huan Chen , Kun Zhao , Huajun Chen

Recommendation systems focus on helping users find items of interest in the situations of information overload, where users' preferences are typically estimated by the past observed behaviors. In contrast, conversational recommendation…

Computation and Language · Computer Science 2022-03-29 Ting-Chun Wang , Shang-Yu Su , Yun-Nung Chen

Existing Conversational Recommender Systems (CRS) predominantly utilize user simulators for training and evaluating recommendation policies. These simulators often oversimplify the complexity of user interactions by focusing solely on…

Information Retrieval · Computer Science 2024-09-10 Gangyi Zhang , Chongming Gao , Hang Pan , Runzhe Teng , Ruizhe Li

Conversational recommender systems (CRS) explicitly solicit users' preferences for improved recommendations on the fly. Most existing CRS solutions count on a single policy trained by reinforcement learning for a population of users.…

Artificial Intelligence · Computer Science 2023-02-17 Zhendong Chu , Hongning Wang , Yun Xiao , Bo Long , Lingfei Wu