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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…

Computation and Language · Computer Science 2022-09-26 Lingzhi Wang , Shafiq Joty , Wei Gao , Xingshan Zeng , Kam-Fai Wong

Large Language Models (LLMs) have demonstrated great potential in Conversational Recommender Systems (CRS). However, the application of LLMs to CRS has exposed a notable discrepancy in behavior between LLM-based CRS and human recommenders:…

Information Retrieval · Computer Science 2024-10-21 Dayu Yang , Fumian Chen , Hui Fang

This survey aims at providing a comprehensive overview of the recent trends in the field of modeling and simulation (M&S) of interactions between users and recommender systems and applications of the M&S to the performance improvement of…

As a paradigm that delves into the deep seated drivers of user behavior, motivation-based recommendation systems have emerged as a prominent research direction in the field of personalized information retrieval. Unlike traditional…

Information Retrieval · Computer Science 2026-03-16 Yicheng Di

With the rapid development of online services, recommender systems (RS) have become increasingly indispensable for mitigating information overload. Despite remarkable progress, conventional recommendation models (CRM) still have some…

Information Retrieval · Computer Science 2024-07-10 Jianghao Lin , Xinyi Dai , Yunjia Xi , Weiwen Liu , Bo Chen , Hao Zhang , Yong Liu , Chuhan Wu , Xiangyang Li , Chenxu Zhu , Huifeng Guo , Yong Yu , Ruiming Tang , Weinan Zhang

Simulating high quality user behavior data has always been a fundamental problem in human-centered applications, where the major difficulty originates from the intricate mechanism of human decision process. Recently, substantial evidences…

Information Retrieval · Computer Science 2024-02-16 Lei Wang , Jingsen Zhang , Hao Yang , Zhiyuan Chen , Jiakai Tang , Zeyu Zhang , Xu Chen , Yankai Lin , Ruihua Song , Wayne Xin Zhao , Jun Xu , Zhicheng Dou , Jun Wang , Ji-Rong Wen

Context: User intent modeling is a crucial process in Natural Language Processing that aims to identify the underlying purpose behind a user's request, enabling personalized responses. With a vast array of approaches introduced in the…

Given the exponential advancement in AI technologies and the potential escalation of harmful effects from recommendation systems, it is crucial to simulate and evaluate these effects early on. Doing so can help prevent possible damage to…

Social and Information Networks · Computer Science 2025-02-04 Ljubisa Bojic , Zorica Dodevska , Yashar Deldjoo , Nenad Pantelic

Large Language Models (LLMs) have revolutionized recommendation agents by providing superior reasoning and flexible decision-making capabilities. However, existing methods mainly follow a passive information acquisition paradigm, where…

Information Retrieval · Computer Science 2026-03-11 Haobo Zhang , Yutao Zhu , Kelong Mao , Tianhao Li , Zhicheng Dou

Conversational recommender systems (CRS) aim to capture user's current intentions and provide recommendations through real-time multi-turn conversational interactions. As a human-machine interactive system, it is essential for CRS to…

Information Retrieval · Computer Science 2022-07-05 Shuokai Li , Yongchun Zhu , Ruobing Xie , Zhenwei Tang , Zhao Zhang , Fuzhen Zhuang , Qing He , Hui Xiong

Despite the remarkable coherence of Large Language Models (LLMs), existing evaluation methods often suffer from fluency bias and rely heavily on multiple-choice formats, making it difficult to assess factual accuracy and complex reasoning…

Computation and Language · Computer Science 2025-01-03 Raymond Bernard , Shaina Raza , Subhabrata Das , Rahul Murugan

Personalization in social robotics is critical for fostering effective human-robot interactions, yet systems often face the cold start problem, where initial user preferences or characteristics are unavailable. This paper proposes a novel…

Human-Computer Interaction · Computer Science 2025-04-03 Hamed Rahimi , Jeanne Cattoni , Meriem Beghili , Mouad Abrini , Mahdi Khoramshahi , Maribel Pino , Mohamed Chetouani

Evaluating retail strategies before deployment is difficult, as outcomes are determined across multiple stages, from seller-side persuasion through buyer-seller interaction to purchase decisions. However, existing retail simulators capture…

Artificial Intelligence · Computer Science 2026-04-07 Jeonghwan Choi , Jibin Hwang , Gyeonghun Sun , Minjeong Ban , Taewon Yun , Hyeonjae Cheon , Hwanjun Song

The problem of model selection with a limited number of experimental trials has received considerable attention in cognitive science, where the role of experiments is to discriminate between theories expressed as computational models.…

Machine Learning · Computer Science 2023-03-07 Alexander Aushev , Aini Putkonen , Gregoire Clarte , Suyog Chandramouli , Luigi Acerbi , Samuel Kaski , Andrew Howes

Large Language Models (LLMs) have recently demonstrated impressive capabilities across various real-world applications. However, due to the current text-in-text-out paradigm, it remains challenging for LLMs to handle dynamic and complex…

Artificial Intelligence · Computer Science 2024-10-25 Timothy Wei , Annabelle Miin , Anastasia Miin

We have developed a conversational recommendation system designed to help users navigate through a set of limited options to find the best choice. Unlike many internet scale systems that use a singular set of search terms and return a…

Computation and Language · Computer Science 2021-04-15 Victor S. Bursztyn , Jennifer Healey , Eunyee Koh , Nedim Lipka , Larry Birnbaum

This paper presents a novel application of large language models in user simulation for task-oriented dialog systems, specifically focusing on an in-context learning approach. By harnessing the power of these models, the proposed approach…

Computation and Language · Computer Science 2023-06-02 Silvia Terragni , Modestas Filipavicius , Nghia Khau , Bruna Guedes , André Manso , Roland Mathis

Traditional robot simulators focus on physical process modeling and realistic rendering, often suffering from high computational costs, inefficiencies, and limited adaptability. To handle this issue, we concentrate on behavior simulation in…

Robotics · Computer Science 2025-09-09 Jianan Wang , Bin Li , Jingtao Qi , Xueying Wang , Fu Li , Hanxun Li

Accurately simulating human opinion dynamics is crucial for understanding a variety of societal phenomena, including polarization and the spread of misinformation. However, the agent-based models (ABMs) commonly used for such simulations…

The promise of LLM-based user simulators to improve conversational AI is hindered by a critical "realism gap," leading to systems that are optimized for simulated interactions, but may fail to perform well in the real world. We introduce…

Computation and Language · Computer Science 2026-02-20 Ofer Meshi , Krisztian Balog , Sally Goldman , Avi Caciularu , Guy Tennenholtz , Jihwan Jeong , Amir Globerson , Craig Boutilier