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Recent attempts to integrate large language models (LLMs) into recommender systems have gained momentum, but most remain limited to simple text generation or static prompt-based inference, failing to capture the complexity of user…

Information Retrieval · Computer Science 2025-10-16 Jiin Park , Misuk Kim

User-item interaction histories are pivotal for sequential recommendation systems but often include noise, such as unintended clicks or actions that fail to reflect genuine user preferences. To address this, we propose Learned Item…

Information Retrieval · Computer Science 2025-11-27 Haidong Xin , Zhenghao Liu , Sen Mei , Yukun Yan , Shi Yu , Shuo Wang , Zulong Chen , Yu Gu , Ge Yu , Chenyan Xiong

Recent progress on neural approaches for language processing has triggered a resurgence of interest on building intelligent open-domain chatbots. However, even the state-of-the-art neural chatbots cannot produce satisfying responses for…

Computation and Language · Computer Science 2022-08-10 Behnam Hedayatnia , Di Jin , Yang Liu , Dilek Hakkani-Tur

Large Language Models (LLMs) have achieved remarkable performance in objective tasks such as open-domain question answering and mathematical reasoning, which can often be solved through recalling learned factual knowledge or…

Computation and Language · Computer Science 2024-02-28 Xiaolong Wang , Yile Wang , Yuanchi Zhang , Fuwen Luo , Peng Li , Maosong Sun , Yang Liu

The recent success of large language models (LLMs) has shown great potential to develop more powerful conversational recommender systems (CRSs), which rely on natural language conversations to satisfy user needs. In this paper, we embark on…

Computation and Language · Computer Science 2024-06-21 Xiaolei Wang , Xinyu Tang , Wayne Xin Zhao , Jingyuan Wang , Ji-Rong Wen

Choosing suitable psychometric scales is an essential and difficult step in psychological consultation, which requires clinicians to integrate patient information, behaviors, and dynamic contextual information. Existing systems mainly use…

Human-Computer Interaction · Computer Science 2026-05-04 Yanzeng Li , Xiaoning Cao , Jialun Zhong , Jianpeng Hu , Jiangshan Tan , Ningning Liu , Feng Xiang , Shasha Han

In this paper, we provide a bilingual parallel human-to-human recommendation dialog dataset (DuRecDial 2.0) to enable researchers to explore a challenging task of multilingual and cross-lingual conversational recommendation. The difference…

Computation and Language · Computer Science 2021-09-21 Zeming Liu , Haifeng Wang , Zheng-Yu Niu , Hua Wu , Wanxiang Che

LLM-based agents have gained considerable attention for their decision-making skills and ability to handle complex tasks. Recognizing the current gap in leveraging agent capabilities for multi-agent collaboration in recommendation systems,…

Information Retrieval · Computer Science 2024-11-04 Zhefan Wang , Yuanqing Yu , Wendi Zheng , Weizhi Ma , Min Zhang

This paper introduces a novel dataset REGEN (Reviews Enhanced with GEnerative Narratives), designed to benchmark the conversational capabilities of recommender Large Language Models (LLMs), addressing the limitations of existing datasets…

Sequential recommendation is a task to capture hidden user preferences from historical user item interaction data and recommend next items for the user. Significant progress has been made in this domain by leveraging classification based…

Information Retrieval · Computer Science 2024-08-30 Panfeng Cao , Pietro Lio

This paper aims to efficiently enable large language models (LLMs) to use external knowledge and goal guidance in conversational recommender system (CRS) tasks. Advanced LLMs (e.g., ChatGPT) are limited in domain-specific CRS tasks for 1)…

Computation and Language · Computer Science 2024-05-06 Chuang Li , Yang Deng , Hengchang Hu , Min-Yen Kan , Haizhou Li

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…

Artificial Intelligence · Computer Science 2022-02-10 Tommaso Di Noia , Francesco Donini , Dietmar Jannach , Fedelucio Narducci , Claudio Pomo

Effective evaluation methods remain a significant challenge for research on open-domain conversational dialogue systems. Explicit satisfaction ratings can be elicited from users, but users often do not provide ratings when asked, and those…

Computation and Language · Computer Science 2023-02-01 Cat P. Le , Luke Dai , Michael Johnston , Yang Liu , Marilyn Walker , Reza Ghanadan

Conversational recommenders are emerging as a powerful tool to personalize a user's recommendation experience. Through a back-and-forth dialogue, users can quickly hone in on just the right items. Many approaches to conversational…

Information Retrieval · Computer Science 2023-02-15 Allen Lin , Ziwei Zhu , Jianling Wang , James Caverlee

The lack of reliable automatic evaluation metrics is a major impediment to the development of open-domain dialogue systems. Various reference-based metrics have been proposed to calculate a score between a predicted response and a small set…

Computation and Language · Computer Science 2022-03-17 Jun Gao , Wei Bi , Ruifeng Xu , Shuming Shi

The ideal conversational recommender system (CRS) acts like a savvy salesperson, adapting its language and suggestions to each user's level of expertise. However, most current systems treat all users as experts, leading to frustrating and…

Information Retrieval · Computer Science 2025-12-16 Ivica Kostric , Ujwal Gadiraju , Krisztian Balog

Recent advancements in Large Language Models (LLMs) have shown significant potential in enhancing recommender systems. However, addressing the cold-start recommendation problem, where users lack historical data, remains a considerable…

Information Retrieval · Computer Science 2025-04-29 Hai-Dang Kieu , Minh Duc Nguyen , Thanh-Son Nguyen , Dung D. Le

While modern dialogue systems heavily rely on large language models (LLMs), their implementation often goes beyond pure LLM interaction. Developers integrate multiple LLMs, external tools, and databases. Therefore, assessment of the…

Artificial Intelligence · Computer Science 2025-07-23 Roman Mayr , Michel Schimpf , Thomas Bohné

Recommender systems play a vital role in alleviating information overload and enriching users' online experience. In the era of large language models (LLMs), LLM-based recommender systems have emerged as a prevalent paradigm for advancing…

Information Retrieval · Computer Science 2025-11-19 Zihuai Zhao , Yujuan Ding , Wenqi Fan , Qing Li

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…

Information Retrieval · Computer Science 2025-09-12 Yifan Wang , Shen Gao , Jiabao Fang , Rui Yan , Billy Chiu , Shuo Shang