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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…

信息检索 · 计算机科学 2025-07-02 Sixiao Zhang , Mingrui Liu , Cheng Long , Wei Yuan , Hongxu Chen , Xiangyu Zhao , Hongzhi Yin

Due to strong capabilities in conducting fluent, multi-turn conversations with users, Large Language Models (LLMs) have the potential to further improve the performance of Conversational Recommender System (CRS). Unlike the aimless…

信息检索 · 计算机科学 2024-02-05 Jiabao Fang , Shen Gao , Pengjie Ren , Xiuying Chen , Suzan Verberne , Zhaochun Ren

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,…

信息检索 · 计算机科学 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

Sequential Recommendation Systems (SRS) have become essential in many real-world applications. However, existing SRS methods often rely on collaborative filtering signals and fail to capture real-time user preferences, while Conversational…

信息检索 · 计算机科学 2025-09-12 Yifan Wang , Shen Gao , Jiabao Fang , Rui Yan , Billy Chiu , Shuo Shang

Growing attention has been paid in Conversational Recommendation System (CRS), which works as a conversation-based and recommendation task-oriented tool to provide items of interest and explore user preference. However, existing work in CRS…

人工智能 · 计算机科学 2022-08-19 Bingbing Wen , Xiaoning Bu , Chirag Shah

Conversational recommender systems (CRS) aim to employ natural language conversations to suggest suitable products to users. Understanding user preferences for prospective items and learning efficient item representations are crucial for…

信息检索 · 计算机科学 2022-12-16 Dongding Lin , Jian Wang , Wenjie Li

The application of deep reinforcement learning in multi-agent systems introduces extra challenges. In a scenario with numerous agents, one of the most important concerns currently being addressed is how to develop sufficient collaboration…

人工智能 · 计算机科学 2022-10-12 Bin Zhang , Yunpeng Bai , Zhiwei Xu , Dapeng Li , Guoliang Fan

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…

计算与语言 · 计算机科学 2023-09-15 Chuang Li , Hengchang Hu , Yan Zhang , Min-Yen Kan , Haizhou Li

Conversational Recommender Systems (CRS) has become an emerging research topic seeking to perform recommendations through interactive conversations, which generally consist of generation and recommendation modules. Prior work on CRS tends…

计算与语言 · 计算机科学 2022-09-26 Lingzhi Wang , Shafiq Joty , Wei Gao , Xingshan Zeng , Kam-Fai Wong

Conversational Recommender Systems (CRSs) aim to provide personalized recommendations through multi-turn natural language interactions with users. Given the strong interaction and reasoning skills of Large Language Models (LLMs), leveraging…

计算与语言 · 计算机科学 2025-10-02 Xiaoyan Zhao , Ming Yan , Yang Zhang , Yang Deng , Jian Wang , Fengbin Zhu , Yilun Qiu , Hong Cheng , Tat-Seng Chua

Recommender systems are software applications that help users find items of interest in situations of information overload in a personalized way, using knowledge about the needs and preferences of individual users. In conversational…

人工智能 · 计算机科学 2022-02-10 Tommaso Di Noia , Francesco Donini , Dietmar Jannach , Fedelucio Narducci , Claudio Pomo

Conversational Recommender Systems (CRSs) engage users in multi-turn interactions to deliver personalized recommendations. The emergence of large language models (LLMs) further enhances these systems by enabling more natural and dynamic…

计算与语言 · 计算机科学 2025-04-18 Xiaoyan Zhao , Yang Deng , Wenjie Wang , Hongzhan lin , Hong Cheng , Rui Zhang , See-Kiong Ng , Tat-Seng Chua

Conversational recommender systems (CRSs) have revolutionized the conventional recommendation paradigm by embracing dialogue agents to dynamically capture the fine-grained user preference. In a typical conversational recommendation…

人工智能 · 计算机科学 2021-05-12 Xuhui Ren , Hongzhi Yin , Tong Chen , Hao Wang , Zi Huang , Kai Zheng

A combinatorial recommender (CR) system feeds a list of items to a user at a time in the result page, in which the user behavior is affected by both contextual information and items. The CR is formulated as a combinatorial optimization…

信息检索 · 计算机科学 2022-07-28 Xin Zhao , Zhiwei Fang , Yuchen Guo , Jie He , Wenlong Chen , Changping Peng

Unfairness is a well-known challenge in Recommender Systems (RSs), often resulting in biased outcomes that disadvantage users or items based on attributes such as gender, race, age, or popularity. Although some approaches have started to…

信息检索 · 计算机科学 2025-07-04 Yongsen Zheng , Zongxuan Xie , Guohua Wang , Ziyao Liu , Liang Lin , Kwok-Yan Lam

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…

计算与语言 · 计算机科学 2020-11-03 Kun Zhou , Yuanhang Zhou , Wayne Xin Zhao , Xiaoke Wang , Ji-Rong Wen

The chit-chat-based conversational recommendation systems (CRS) provide item recommendations to users through natural language interactions. To better understand user's intentions, external knowledge graphs (KG) have been introduced into…

计算与语言 · 计算机科学 2021-05-19 Tong Zhang , Yong Liu , Peixiang Zhong , Chen Zhang , Hao Wang , Chunyan Miao

Conversational recommender systems (CRSs) aim to capture user preferences and provide personalized recommendations through multi-round natural language dialogues. However, most existing CRS models mainly focus on dialogue comprehension and…

信息检索 · 计算机科学 2024-07-09 Yunjia Xi , Weiwen Liu , Jianghao Lin , Bo Chen , Ruiming Tang , Weinan Zhang , Yong Yu

Conversational Recommender Systems (CRS) actively elicit user preferences to generate adaptive recommendations. Mainstream reinforcement learning-based CRS solutions heavily rely on handcrafted reward functions, which may not be aligned…

信息检索 · 计算机科学 2023-11-01 Zhendong Chu , Nan Wang , Hongning Wang

Recommending novel content, which expands user horizons by introducing them to new interests, has been shown to improve users' long-term experience on recommendation platforms \cite{chen2021values}. Users however are not constantly looking…

信息检索 · 计算机科学 2023-06-05 Pan Li , Yuyan Wang , Ed H. Chi , Minmin Chen