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With the rapid development of online services, recommender systems (RS) have become increasingly indispensable for mitigating information overload. Despite remarkable progress, conventional recommendation models (CRM) still have some…

Information Retrieval · Computer Science 2024-07-10 Jianghao Lin , Xinyi Dai , Yunjia Xi , Weiwen Liu , Bo Chen , Hao Zhang , Yong Liu , Chuhan Wu , Xiangyang Li , Chenxu Zhu , Huifeng Guo , Yong Yu , Ruiming Tang , Weinan Zhang

In Conversational Recommendation Systems (CRS), a user can provide feedback on recommended items at each interaction turn, leading the CRS towards more desirable recommendations. Currently, different types of CRS offer various possibilities…

Information Retrieval · Computer Science 2024-01-12 Maria Vlachou , Craig Macdonald

A Conversational Recommender System (CRS) offers increased transparency and control to users by enabling them to engage with the system through a real-time multi-turn dialogue. Recently, Large Language Models (LLMs) have exhibited an…

Recommender systems (RSs) aim to help users to effectively retrieve items of their interests from a large catalogue. For a quite long period of time, researchers and practitioners have been focusing on developing accurate RSs. Recent years…

Information Retrieval · Computer Science 2023-11-20 Shoujin Wang , Xiuzhen Zhang , Yan Wang , Huan Liu , Francesco Ricci

The emerging topic of sequential recommender systems has attracted increasing attention in recent years.Different from the conventional recommender systems including collaborative filtering and content-based filtering, SRSs try to…

Information Retrieval · Computer Science 2020-01-15 Shoujin Wang , Liang Hu , Yan Wang , Longbing Cao , Quan Z. Sheng , Mehmet Orgun

A conversational recommender system (CRS) is a practical application for item recommendation through natural language conversation. Such a system estimates user interests for appropriate personalized recommendations. Users sometimes have…

Computation and Language · Computer Science 2023-03-02 Yuka Okuda , Katsuhito Sudoh , Seitaro Shinagawa , Satoshi Nakamura

Recently, recommender system (RS) based on causal inference has gained much attention in the industrial community, as well as the states of the art performance in many prediction and debiasing tasks. Nevertheless, a unified causal analysis…

Information Retrieval · Computer Science 2022-05-19 Peng Wu , Haoxuan Li , Yuhao Deng , Wenjie Hu , Quanyu Dai , Zhenhua Dong , Jie Sun , Rui Zhang , Xiao-Hua Zhou

Conversational recommender systems (CRS) aim to provide the recommendation service via natural language conversations. To develop an effective CRS, high-quality CRS datasets are very crucial. However, existing CRS datasets suffer from the…

Information Retrieval · Computer Science 2023-10-24 Zhipeng Zhao , Kun Zhou , Xiaolei Wang , Wayne Xin Zhao , Fan Pan , Zhao Cao , Ji-Rong Wen

Conversational recommender systems (CRSs) have become crucial emerging research topics in the field of RSs, thanks to their natural advantages of explicitly acquiring user preferences via interactive conversations and revealing the reasons…

Information Retrieval · Computer Science 2023-06-16 Xinghua Qu , Hongyang Liu , Zhu Sun , Xiang Yin , Yew Soon Ong , Lu Lu , Zejun Ma

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 (CRSs) are able to elicit user preferences through multi-turn dialogues. They typically incorporate external knowledge and pre-trained language models to capture the dialogue context. Most CRS approaches,…

Information Retrieval · Computer Science 2024-09-18 Xiaoyu Zhang , Ruobing Xie , Yougang Lyu , Xin Xin , Pengjie Ren , Mingfei Liang , Bo Zhang , Zhanhui Kang , Maarten de Rijke , Zhaochun Ren

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

In the era of information overload, recommender systems (RSs) have become an indispensable part of online service platforms. Traditional RSs estimate user interests and predict their future behaviors by utilizing correlations in the…

Information Retrieval · Computer Science 2023-01-04 Yaochen Zhu , Jing Ma , Jundong Li

Instruments such as eye-tracking devices have contributed to understanding how users interact with screen-based search engines. However, user-system interactions in audio-only channels -- as is the case for Spoken Conversational Search…

Human-Computer Interaction · Computer Science 2024-08-08 Kaixin Ji , Sachin Pathiyan Cherumanal , Johanne R. Trippas , Danula Hettiachchi , Flora D. Salim , Falk Scholer , Damiano Spina

Conversational recommender systems (CRS) aim to recommend relevant items to users by eliciting user preference through natural language conversation. Prior work often utilizes external knowledge graphs for items' semantic information, a…

Computation and Language · Computer Science 2024-02-27 Mathieu Ravaut , Hao Zhang , Lu Xu , Aixin Sun , Yong Liu

Conversational Recommender Systems (CRSs) deliver personalised recommendations through multi-turn natural language dialogue and increasingly support both task-oriented and exploratory interactions. Yet, the factors shaping user interaction…

Human-Computer Interaction · Computer Science 2025-08-05 Raj Mahmud , Shlomo Berkovsky , Mukesh Prasad , A. Baki Kocaballi

The issue of popularity bias -- where popular items are disproportionately recommended, overshadowing less popular but potentially relevant items -- remains a significant challenge in recommender systems. Recent advancements have seen the…

Information Retrieval · Computer Science 2024-06-04 Jan Malte Lichtenberg , Alexander Buchholz , Pola Schwöbel

In recent years, conversational recommender system (CRS) has received much attention in the research community. However, existing studies on CRS vary in scenarios, goals and techniques, lacking unified, standardized implementation or…

Computation and Language · Computer Science 2021-01-05 Kun Zhou , Xiaolei Wang , Yuanhang Zhou , Chenzhan Shang , Yuan Cheng , Wayne Xin Zhao , Yaliang Li , Ji-Rong Wen

Conversational recommender systems (CRS) aim to proactively elicit user preference and recommend high-quality items through natural language conversations. Typically, a CRS consists of a recommendation module to predict preferred items for…

Computation and Language · Computer Science 2023-06-06 Xiaolei Wang , Kun Zhou , Ji-Rong Wen , Wayne Xin Zhao

Despite large language models (LLMs) increasingly becoming important components of news recommender systems, employing LLMs in such systems introduces new risks, such as the influence of cognitive biases in LLMs. Cognitive biases refer to…

Information Retrieval · Computer Science 2024-10-07 Yougang Lyu , Xiaoyu Zhang , Zhaochun Ren , Maarten de Rijke