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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

Large Language Models (LLMs) have shown strong potential in recommender systems due to their contextual learning and generalisation capabilities. Existing LLM-based recommendation approaches typically formulate the recommendation task using…

Information Retrieval · Computer Science 2025-07-09 Zeyuan Meng , Zixuan Yi , Iadh Ounis

The field of Recommender Systems (RecSys) has been extensively studied to enhance accuracy by leveraging users' historical interactions. Nonetheless, this persistent pursuit of accuracy frequently engenders diminished diversity, culminating…

Information Retrieval · Computer Science 2024-04-23 Xiaolong Liu , Liangwei Yang , Zhiwei Liu , Mingdai Yang , Chen Wang , Hao Peng , Philip S. Yu

Social recommendation task aims to predict users' preferences over items with the incorporation of social connections among users, so as to alleviate the sparse issue of collaborative filtering. While many recent efforts show the…

Information Retrieval · Computer Science 2021-10-11 Chao Huang , Huance Xu , Yong Xu , Peng Dai , Lianghao Xia , Mengyin Lu , Liefeng Bo , Hao Xing , Xiaoping Lai , Yanfang Ye

Conversational recommender systems (CRS) enhance the expressivity and personalization of recommendations through multiple turns of user-system interaction. Critiquing is a well-known paradigm for CRS that allows users to iteratively refine…

Information Retrieval · Computer Science 2023-06-12 Armin Toroghi , Griffin Floto , Zhenwei Tang , Scott Sanner

State-of-the-art methods on conversational recommender systems (CRS) leverage external knowledge to enhance both items' and contextual words' representations to achieve high quality recommendations and responses generation. However, the…

Information Retrieval · Computer Science 2023-04-19 Huy Dao , Dung D. Le , Cuong Chu

Knowledge Graphs (KGs) have emerged as invaluable resources for enriching recommendation systems by providing a wealth of factual information and capturing semantic relationships among items. Leveraging KGs can significantly enhance…

Information Retrieval · Computer Science 2023-12-29 Yangqin Jiang , Yuhao Yang , Lianghao Xia , Chao Huang

Recent advancements in recommender systems have focused on integrating knowledge graphs (KGs) to leverage their auxiliary information. The core idea of KG-enhanced recommenders is to incorporate rich semantic information for more accurate…

Information Retrieval · Computer Science 2024-07-08 Darnbi Sakong , Viet Hung Vu , Thanh Trung Huynh , Phi Le Nguyen , Hongzhi Yin , Quoc Viet Hung Nguyen , Thanh Tam Nguyen

Recommender systems (RSs) are designed to provide personalized recommendations to users. Recently, knowledge graphs (KGs) have been widely introduced in RSs to improve recommendation accuracy. In this study, however, we demonstrate that RSs…

Information Retrieval · Computer Science 2025-01-24 Haonan Zhang , Dongxia Wang , Zhu Sun , Yanhui Li , Youcheng Sun , Huizhi Liang , Wenhai Wang

Recommender systems are software applications that help users to find items of interest in situations of information overload. Current research often assumes a one-shot interaction paradigm, where the users' preferences are estimated based…

Human-Computer Interaction · Computer Science 2021-06-01 Dietmar Jannach , Ahtsham Manzoor , Wanling Cai , Li Chen

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

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

In modern digital marketing, the growing complexity of advertisement data demands intelligent systems capable of understanding semantic relationships among products, audiences, and advertising content. To address this challenge, this paper…

Information Retrieval · Computer Science 2026-01-06 Tangtang Wang , Kaijie Zhang , Kuangcong Liu

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

To alleviate sparsity and cold start problem of collaborative filtering based recommender systems, researchers and engineers usually collect attributes of users and items, and design delicate algorithms to exploit these additional…

Information Retrieval · Computer Science 2019-04-30 Hongwei Wang , Miao Zhao , Xing Xie , Wenjie Li , Minyi Guo

Conversational Recommender Systems (CRSs) aim to provide personalized recommendations by interacting with users through conversations. Most existing studies of CRS focus on extracting user preferences from conversational contexts. However,…

Information Retrieval · Computer Science 2025-04-28 Yibiao Wei , Jie Zou , Weikang Guo , Guoqing Wang , Xing Xu , Yang Yang

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 (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

Incorporating Knowledge Graphs (KG) into recommeder system has attracted considerable attention. Recently, the technical trend of Knowledge-aware Recommendation (KGR) is to develop end-to-end models based on graph neural networks (GNNs).…

Information Retrieval · Computer Science 2022-08-23 Ding Zou , Wei Wei , Ziyang Wang , Xian-Ling Mao , Feida Zhu , Rui Fang , Dangyang Chen

Numerous Knowledge Graphs (KGs) are being created to make Recommender Systems (RSs) not only intelligent but also knowledgeable. Integrating a KG in the recommendation process allows the underlying model to extract reasoning paths between…

Information Retrieval · Computer Science 2022-11-11 Giacomo Balloccu , Ludovico Boratto , Gianni Fenu , Mirko Marras