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Query expansion is a widely used technique to improve the recall of search systems. In this paper, we propose an approach to query expansion that leverages the generative abilities of Large Language Models (LLMs). Unlike traditional query…

Information Retrieval · Computer Science 2023-05-08 Rolf Jagerman , Honglei Zhuang , Zhen Qin , Xuanhui Wang , Michael Bendersky

A Conversational Recommender System (CRS) offers increased transparency and control to users by enabling them to engage with the system through a real-time multi-turn dialogue. Recently, Large Language Models (LLMs) have exhibited an…

This study deeply explores the application of large language model (LLM) in personalized recommendation system of e-commerce. Aiming at the limitations of traditional recommendation algorithms in processing large-scale and multi-dimensional…

Information Retrieval · Computer Science 2024-10-18 Wei Xu , Jue Xiao , Jianlong Chen

Large-scale pre-trained language models (LLMs) have demonstrated exceptional performance in various natural language processing (NLP) tasks. However, the massive size of these models poses huge challenges for their deployment in real-world…

Computation and Language · Computer Science 2023-10-25 Jiduan Liu , Jiahao Liu , Qifan Wang , Jingang Wang , Xunliang Cai , Dongyan Zhao , Ran Lucien Wang , Rui Yan

In recent years, there has been growing interest in leveraging the impressive generalization capabilities and reasoning ability of large language models (LLMs) to improve the performance of recommenders. With this operation, recommenders…

Information Retrieval · Computer Science 2025-08-12 Guanchen Wang , Mingming Ha , Tianbao Ma , Linxun Chen , Zhaojie Liu , Guorui Zhou , Kun Gai

Large Language Models (LLMs) are now widely used for query reformulation and expansion in Information Retrieval, with many studies reporting substantial effectiveness gains. However, these results are typically obtained under heterogeneous…

Information Retrieval · Computer Science 2026-05-01 Amin Bigdeli , Radin Hamidi Rad , Hai Son Le , Mert Incesu , Negar Arabzadeh , Charles L. A. Clarke , Ebrahim Bagheri

Large Language Models (LLMs) have been found to have difficulty knowing they do not possess certain knowledge and tend to provide specious answers in such cases. Retrieval Augmentation (RA) has been extensively studied to mitigate LLMs'…

Computation and Language · Computer Science 2024-06-12 Shiyu Ni , Keping Bi , Jiafeng Guo , Xueqi Cheng

Recent studies have proposed leveraging Large Language Models (LLMs) as information retrievers through query rewriting. However, for challenging corpora, we argue that enhancing queries alone is insufficient for robust semantic matching;…

Information Retrieval · Computer Science 2025-06-24 Jingming Liu , Yumeng Li , Wei Shi , Yao-Xiang Ding , Hui Su , Kun Zhou

Small language models (SLMs) often struggle with complex mathematical reasoning due to limited capacity to maintain long chains of intermediate steps and to recover from early errors. We address this challenge by introducing a hint-assisted…

Artificial Intelligence · Computer Science 2026-04-15 Jawad Hossain , Xiangyu Guo , Jiawei Zhou , Chong Liu

Large language models (LLMs) have achieved strong performance on medical question answering (medical QA), and chain-of-thought (CoT) prompting has further improved results by eliciting explicit intermediate reasoning; meanwhile,…

Computation and Language · Computer Science 2026-04-03 Zaifu Zhan , Mengyuan Cui , Rui Zhang

Recent advancements in Large Language Models (LLMs) have garnered wide attention and led to successful products such as ChatGPT and GPT-4. Their proficiency in adhering to instructions and delivering harmless, helpful, and honest (3H)…

Machine Learning · Computer Science 2023-10-11 Hao Sun

By augmenting Large Language Models (LLMs) with external tools, their capacity to solve complex problems has been significantly enhanced. However, despite ongoing advancements in the parsing capabilities of LLMs, incorporating all available…

Computation and Language · Computer Science 2025-11-24 Hang Gao , Yongfeng Zhang

The ability of Large Language Models (LLMs) to extract context from natural language problem descriptions naturally raises questions about their suitability in autonomous decision-making settings. This paper studies the behaviour of these…

Artificial Intelligence · Computer Science 2025-07-22 Xiao Yang , Juxi Leitner , Michael Burke

Large Language Models (LLMs) have shown remarkable capabilities in natural language processing, mathematical problem solving, and tasks related to program synthesis. However, their effectiveness in long-term planning and higher-order…

Artificial Intelligence · Computer Science 2024-10-08 Erik Wu , Sayan Mitra

Despite the recent advancement in Retrieval-Augmented Generation (RAG) systems, most retrieval methodologies are often developed for factual retrieval, which assumes query and positive documents are semantically similar. In this paper, we…

Information Retrieval · Computer Science 2025-04-10 Luo Ji , Feixiang Guo , Teng Chen , Qingqing Gu , Xiaoyu Wang , Ningyuan Xi , Yihong Wang , Peng Yu , Yue Zhao , Hongyang Lei , Zhonglin Jiang , Yong Chen

Reinforcement Learning (RL) algorithms often require long training to become useful, especially in complex environments with sparse rewards. While techniques like reward shaping and curriculum learning exist to accelerate training, these…

Machine Learning · Computer Science 2025-09-11 Lukas Toral , Teddy Lazebnik

Instruction tuning is critical to large language models (LLMs) for achieving better instruction following and task adaptation capabilities but its success heavily relies on the training data quality. Many recent methods focus on improving…

Computation and Language · Computer Science 2024-06-11 Ming Li , Lichang Chen , Jiuhai Chen , Shwai He , Jiuxiang Gu , Tianyi Zhou

Large language models (LLMs) enable system builders today to create competent NLP systems through prompting, where they only need to describe the task in natural language and provide a few examples. However, in other ways, LLMs are a step…

Computation and Language · Computer Science 2023-08-24 Vijay Viswanathan , Chenyang Zhao , Amanda Bertsch , Tongshuang Wu , Graham Neubig

Conventional recommendation methods have achieved notable advancements by harnessing collaborative or sequential information from user behavior. Recently, large language models (LLMs) have gained prominence for their capabilities in…

Information Retrieval · Computer Science 2026-01-21 Sichun Luo , Yuxuan Yao , Bowei He , Wei Shao , Jian Xu , Yinya Huang , Aojun Zhou , Xinyi Zhang , Yuanzhang Xiao , Hanxu Hou , Mingjie Zhan , Linqi Song

Large Language Models (LLMs) were shown to struggle with long-term planning, which may be caused by the limited way in which they explore the space of possible solutions. We propose an architecture where a Reinforcement Learning (RL) Agent…

Machine Learning · Computer Science 2024-10-18 Yoav Alon , Cristina David