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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…

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 elicit user preferences via natural dialogue to provide suitable item recommendations. However, current CRSs often deviate from realistic human interactions by rapidly recommending items in…

Information Retrieval · Computer Science 2025-09-01 Manato Tajiri , Michimasa Inaba

Recommender systems can be characterized as software solutions that provide users convenient access to relevant content. Traditionally, recommender systems research predominantly focuses on developing machine learning algorithms that aim to…

Information Retrieval · Computer Science 2022-10-20 Dietmar Jannach

We will demonstrate a conversational products recommendation agent. This system shows how we combine research in personalized recommendation systems with research in dialogue systems to build a virtual sales agent. Based on new deep…

Computation and Language · Computer Science 2016-10-06 Yueming Sun , Yi Zhang , Yunfei Chen , Roger Jin

Information access systems, such as search engines, recommender systems, and conversational assistants, have become integral to our daily lives as they help us satisfy our information needs. However, evaluating the effectiveness of these…

Human-Computer Interaction · Computer Science 2026-04-21 Krisztian Balog , ChengXiang Zhai

Conversational and question-based recommender systems have gained increasing attention in recent years, with users enabled to converse with the system and better control recommendations. Nevertheless, research in the field is still limited,…

Information Retrieval · Computer Science 2020-06-01 Jie Zou , Yifan Chen , Evangelos Kanoulas

Explainable Recommender Systems (XRS) aim to provide users with understandable reasons for the recommendations generated by these systems, representing a crucial research direction in artificial intelligence (AI). Recent research has…

Human-Computer Interaction · Computer Science 2025-05-15 Weiqing Li , Yue Xu , Yuefeng Li , Yinghui Huang

Existing conversational recommendation (CR) systems usually suffer from insufficient item information when conducted on short dialogue history and unfamiliar items. Incorporating external information (e.g., reviews) is a potential solution…

Computation and Language · Computer Science 2021-06-03 Yu Lu , Junwei Bao , Yan Song , Zichen Ma , Shuguang Cui , Youzheng Wu , Xiaodong He

Recent years have seen a surge of research into conversational recommender systems (CRS). Among existing datasets, ReDial is the most widely used benchmark, cited in hundreds of studies. However, variations in how the dataset is…

Information Retrieval · Computer Science 2026-05-21 Ivica Kostric , Krisztian Balog

While language models (LMs) offer great potential for conversational recommender systems (CRSs), the paucity of public CRS data makes fine-tuning LMs for CRSs challenging. In response, LMs as user simulators qua data generators can be used…

Computation and Language · Computer Science 2025-10-06 Moonkyung Ryu , Chih-Wei Hsu , Yinlam Chow , Mohammad Ghavamzadeh , Craig Boutilier

Recommender systems have been widely applied to assist user's decision making by providing a list of personalized item recommendations. Context-aware recommender systems (CARS) additionally take context information into considering in the…

Information Retrieval · Computer Science 2017-10-25 Yong Zheng

Recommender systems attempt to reduce information overload and retain customers by selecting a subset of items from a universal set based on user preferences. While research in recommender systems grew out of information retrieval and…

Information Retrieval · Computer Science 2007-05-23 Saverio Perugini , Marcos Andre Goncalves , Edward A. Fox

Animated avatars, which look and talk like humans, are iconic visions of the future of AI-powered systems. Through many sci-fi movies we are acquainted with the idea of speaking to such virtual personalities as if they were humans. Today,…

Artificial Intelligence · Computer Science 2022-03-18 Dietmar Jannach , Li Chen

Digital human recommendation system has been developed to help customers find their favorite products and is playing an active role in various recommendation contexts. How to timely catch and learn the dynamics of the preferences of the…

Information Retrieval · Computer Science 2022-11-07 Xiong Junwu , Xiaoyun Feng , YunZhou Shi , James Zhang , Zhongzhou Zhao , Wei Zhou

Conversational Recommender Systems (CRS) illuminate user preferences via multi-round interactive dialogues, ultimately navigating towards precise and satisfactory recommendations. However, contemporary CRS are limited to inquiring binary or…

Information Retrieval · Computer Science 2024-04-04 Wei Fan , Weijia Zhang , Weiqi Wang , Yangqiu Song , Hao Liu

Inspired by conversational reading comprehension (CRC), this paper studies a novel task of leveraging reviews as a source to build an agent that can answer multi-turn questions from potential consumers of online businesses. We first build a…

Computation and Language · Computer Science 2019-11-07 Hu Xu , Bing Liu , Lei Shu , Philip S. Yu

Interactive Recommender Systems (IRSs) have attracted a lot of attention, due to their ability to model interactive processes between users and recommender systems. Numerous approaches have adopted Reinforcement Learning (RL) algorithms, as…

Information Retrieval · Computer Science 2023-08-23 Hojoon Lee , Dongyoon Hwang , Kyushik Min , Jaegul Choo

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

Recommender systems (RSs) have been playing an increasingly important role for informed consumption, services, and decision-making in the overloaded information era and digitized economy. In recent years, session-based recommender systems…

Information Retrieval · Computer Science 2021-05-18 Shoujin Wang , Longbing Cao , Yan Wang , Quan Z. Sheng , Mehmet Orgun , Defu Lian

Recommendation is crucial in both academia and industry, and various techniques are proposed such as content-based collaborative filtering, matrix factorization, logistic regression, factorization machines, neural networks and multi-armed…

Information Retrieval · Computer Science 2019-10-30 Feng Liu , Ruiming Tang , Xutao Li , Weinan Zhang , Yunming Ye , Haokun Chen , Huifeng Guo , Yuzhou Zhang