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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…

Artificial Intelligence · Computer Science 2021-05-12 Xuhui Ren , Hongzhi Yin , Tong Chen , Hao Wang , Zi Huang , Kai Zheng

Conversational Recommender Systems (CRSs) have become increasingly popular as a powerful tool for providing personalized recommendation experiences. By directly engaging with users in a conversational manner to learn their current and…

Information Retrieval · Computer Science 2025-03-04 Allen Lin , Jianling Wang , Ziwei Zhu , James Caverlee

Session-based recommendation focuses on predicting the next item a user will interact with based on sequences of anonymous user sessions. A significant challenge in this field is data sparsity due to the typically short-term interactions.…

Information Retrieval · Computer Science 2024-12-17 Zhe Yang , Tiantian Liang

Session-based recommendation (SBR) is a task that aims to predict items based on anonymous sequences of user behaviors in a session. While there are methods that leverage rich context information in sessions for SBR, most of them have the…

Information Retrieval · Computer Science 2023-10-17 Zhihui Zhang , JianXiang Yu , Xiang Li

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 (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 (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

Human conversations of recommendation naturally involve the shift of interests which can align the recommendation actions and conversation process to make accurate recommendations with rich explanations. However, existing conversational…

Computation and Language · Computer Science 2022-11-08 Jinfeng Zhou , Bo Wang , Minlie Huang , Dongming Zhao , Kun Huang , Ruifang He , Yuexian Hou

Different from the traditional recommender system, the session-based recommender system introduces the concept of the session, i.e., a sequence of interactions between a user and multiple items within a period, to preserve the user's recent…

Information Retrieval · Computer Science 2021-07-12 Ruihong Qiu , Zi Huang , Jingjing Li , Hongzhi Yin

Knowledge-based recommendation models effectively alleviate the data sparsity issue leveraging the side information in the knowledge graph, and have achieved considerable performance. Nevertheless, the knowledge graphs used in previous…

Information Retrieval · Computer Science 2024-03-28 Shenghao Yang , Weizhi Ma , Peijie Sun , Min Zhang , Qingyao Ai , Yiqun Liu , Mingchen Cai

We study a conversational recommendation model which dynamically manages users' past (offline) preferences and current (online) requests through a structured and cumulative user memory knowledge graph, to allow for natural interactions and…

Computation and Language · Computer Science 2020-06-02 Hu Xu , Seungwhan Moon , Honglei Liu , Bing Liu , Pararth Shah , Bing Liu , Philip S. Yu

Recommender Systems (RSs) have become the cornerstone of various applications such as e-commerce and social media platforms. The evolution of RSs is paramount in the digital era, in which personalised user experience is tailored to the…

Information Retrieval · Computer Science 2025-12-09 Tendai Mukande , Esraa Ali , Annalina Caputo , Ruihai Dong , Noel OConnor

Conversational Recommender Systems (CRSs) have attracted growing attention for their ability to deliver personalized recommendations through natural language interactions. To more accurately infer user preferences from multi-turn…

Information Retrieval · Computer Science 2026-01-21 Wei Yuan , Shutong Qiao , Tong Chen , Quoc Viet Hung Nguyen , Zi Huang , Hongzhi Yin

Modern recommendation systems typically follow two complementary paradigms: collaborative filtering, which models long-term user preferences from historical interactions, and conversational recommendation systems (CRS), which interact with…

Information Retrieval · Computer Science 2025-06-24 Vinaik Chhetri , Yousaf Reza , Moghis Fereidouni , Srijata Maji , Umar Farooq , AB Siddique

Intent detection and identification from multi-turn dialogue has become a widely explored technique in conversational agents, for example, voice assistants and intelligent customer services. The conventional approaches typically cast the…

Artificial Intelligence · Computer Science 2023-10-19 Zengguang Hao , Jie Zhang , Binxia Xu , Yafang Wang , Gerard de Melo , Xiaolong Li

We present CID-GraphRAG (Conversational Intent-Driven Graph Retrieval-Augmented Generation), a novel framework that addresses the limitations of existing dialogue systems in maintaining both contextual coherence and goal-oriented…

Artificial Intelligence · Computer Science 2026-02-10 Ziqi Zhu , Tao Hu , Honglong Zhang , Dan Yang , Hangeng Chen , Mengran Zhang , Xilun Chen

Conversational recommender systems (CRS) aim to provide personalized recommendations via interactive dialogues with users. While large language models (LLMs) enhance CRS with their superior understanding of context-aware user preferences,…

Information Retrieval · Computer Science 2025-02-21 Yaochen Zhu , Chao Wan , Harald Steck , Dawen Liang , Yesu Feng , Nathan Kallus , Jundong Li

Conversational recommender systems (CRS) dynamically obtain the user preferences via multi-turn questions and answers. The existing CRS solutions are widely dominated by deep reinforcement learning algorithms. However, deep reinforcement…

Information Retrieval · Computer Science 2022-09-01 A S M Ahsan-Ul Haque , Hongning Wang

Multi-behavior recommendation (MBR) has garnered growing attention recently due to its ability to mitigate the sparsity issue by inferring user preferences from various auxiliary behaviors to improve predictions for the target behavior.…

Information Retrieval · Computer Science 2024-12-20 Yabo Yin , Xiaofei Zhu , Wenshan Wang , Yihao Zhang , Pengfei Wang , Yixing Fan , Jiafeng Guo

The recommendation system provides users with an appropriate limit of recent online large amounts of information. Session-based recommendation, a sub-area of recommender systems, attempts to recommend items by interpreting sessions that…

Information Retrieval · Computer Science 2022-06-28 Minjae Park