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Recent advancements in tool learning have enabled large language models (LLMs) to integrate external tools, enhancing their task performance by expanding their knowledge boundaries. However, relying on tools often introduces tradeoffs…

Computation and Language · Computer Science 2025-03-11 Hongshen Xu , Zihan Wang , Zichen Zhu , Lei Pan , Xingyu Chen , Lu Chen , Kai Yu

Multimodal large language models (MLLMs) have shown remarkable performance for cross-modal understanding and generation, yet still suffer from severe inference costs. Recently, abundant works have been proposed to solve this problem with…

Computation and Language · Computer Science 2025-05-30 Zichen Wen , Yifeng Gao , Weijia Li , Conghui He , Linfeng Zhang

Recommender systems (RS) have become essential tools for helping users efficiently navigate the overwhelming amount of information on e-commerce and social platforms. However, traditional RS relying on Collaborative Filtering (CF) struggles…

Information Retrieval · Computer Science 2025-02-27 Mingdai Yang , Zhiwei Liu , Liangwei Yang , Xiaolong Liu , Chen Wang , Hao Peng , Philip S. Yu

Tool learning serves as a powerful auxiliary mechanism that extends the capabilities of large language models (LLMs), enabling them to tackle complex tasks requiring real-time relevance or high precision operations. Behind its powerful…

Cryptography and Security · Computer Science 2025-04-08 Liuji Chen , Hao Gao , Jinghao Zhang , Qiang Liu , Shu Wu , Liang Wang

Incremental Learning (IL) has been a long-standing problem in both vision and Natural Language Processing (NLP) communities. In recent years, as Pre-trained Language Models (PLMs) have achieved remarkable progress in various NLP downstream…

Computation and Language · Computer Science 2024-08-09 Junhao Zheng , Shengjie Qiu , Qianli Ma

In information retrieval, large language models (LLMs) have demonstrated remarkable potential in text reranking tasks by leveraging their sophisticated natural language understanding and advanced reasoning capabilities. However,…

Information Retrieval · Computer Science 2025-09-22 Haowei Liu , Xuyang Wu , Guohao Sun , Zhiqiang Tao , Yi Fang

LLM agents operating over massive, dynamic tool libraries rely on effective retrieval, yet standard single-shot dense retrievers struggle with complex requests. These failures primarily stem from the disconnect between abstract user goals…

Computation and Language · Computer Science 2026-01-13 Wei Fang , James Glass

In this paper, we introduce Rank-R1, a novel LLM-based reranker that performs reasoning over both the user query and candidate documents before performing the ranking task. Existing document reranking methods based on large language models…

Information Retrieval · Computer Science 2025-03-11 Shengyao Zhuang , Xueguang Ma , Bevan Koopman , Jimmy Lin , Guido Zuccon

Large language models (LLMs) excel in many natural language tasks, yet they struggle with complex mathemat-ical problem-solving, particularly in symbolic reasoning and maintaining consistent output. This study evalu-ates 10 LLMs with 7 to 8…

Machine Learning · Computer Science 2025-01-29 Evgenii Evstafev

Large language models (LLMs) increasingly solve complex reasoning tasks via long chain-of-thought, but their forward-only autoregressive generation process is fragile; early token errors can cascade, which creates a clear need for…

Computation and Language · Computer Science 2025-10-06 Jian Mu , Qixin Zhang , Zhiyong Wang , Menglin Yang , Shuang Qiu , Chengwei Qin , Zhongxiang Dai , Yao Shu

In this paper, we propose new listwise learning-to-rank models that mitigate the shortcomings of existing ones. Existing listwise learning-to-rank models are generally derived from the classical Plackett-Luce model, which has three major…

Information Retrieval · Computer Science 2020-01-24 Xiaofeng Zhu , Diego Klabjan

Reinforcement learning (RL) is frequently used to increase performance in text generation tasks, including machine translation (MT), notably through the use of Minimum Risk Training (MRT) and Generative Adversarial Networks (GAN). However,…

Computation and Language · Computer Science 2020-01-16 Leshem Choshen , Lior Fox , Zohar Aizenbud , Omri Abend

With the expansion of business scenarios, real recommender systems are facing challenges in dealing with the constantly emerging new tasks in multi-task learning frameworks. In this paper, we attempt to improve the generalization ability of…

Information Retrieval · Computer Science 2024-09-02 Ting Bai , Le Huang , Yue Yu , Cheng Yang , Cheng Hou , Zhe Zhao , Chuan Shi

In inaccessible environments with uncertain task demands, robots often rely on general-purpose tools that lack predefined usage strategies. These tools are not tailored for particular operations, making their longevity highly sensitive to…

Robotics · Computer Science 2025-07-28 Po-Yen Wu , Cheng-Yu Kuo , Yuki Kadokawa , Takamitsu Matsubara

Listwise rerankers based on large language models (LLM) are the zero-shot state-of-the-art. However, current works in this direction all depend on the GPT models, making it a single point of failure in scientific reproducibility. Moreover,…

Computation and Language · Computer Science 2023-12-06 Xinyu Zhang , Sebastian Hofstätter , Patrick Lewis , Raphael Tang , Jimmy Lin

Math word problem (MWP) is a challenging and critical task in natural language processing. Many recent studies formalize MWP as a generation task and have adopted sequence-to-sequence models to transform problem descriptions to mathematical…

Computation and Language · Computer Science 2021-09-08 Jianhao Shen , Yichun Yin , Lin Li , Lifeng Shang , Xin Jiang , Ming Zhang , Qun Liu

As large language models (LLMs) become increasingly powerful, the sequential nature of autoregressive generation creates a fundamental throughput bottleneck that limits the practical deployment. While Multi-Token Prediction (MTP) has…

Machine Learning · Computer Science 2025-09-24 Yuxuan Cai , Xiaozhuan Liang , Xinghua Wang , Jin Ma , Haijin Liang , Jinwen Luo , Xinyu Zuo , Lisheng Duan , Yuyang Yin , Xi Chen

Reward modeling (a.k.a., preference modeling) is instrumental for aligning large language models with human preferences, particularly within the context of reinforcement learning from human feedback (RLHF). While conventional reward models…

Computation and Language · Computer Science 2024-02-13 Lei Li , Yekun Chai , Shuohuan Wang , Yu Sun , Hao Tian , Ningyu Zhang , Hua Wu

Agentic reinforcement learning has advanced large language models (LLMs) to reason through long chain-of-thought trajectories while interleaving external tool use. Existing approaches assume a fixed inventory of tools, limiting LLM agents'…

Computation and Language · Computer Science 2025-12-16 Jiaru Zou , Ling Yang , Yunzhe Qi , Sirui Chen , Mengting Ai , Ke Shen , Jingrui He , Mengdi Wang

Listwise reranking utilizing Large Language Models (LLMs) has achieved state-of-the-art retrieval effectiveness. Recently, reasoning-enhanced models have further pushed these boundaries by employing Chain-of-Thought (CoT) to perform deep…

Information Retrieval · Computer Science 2026-05-15 Danyang Liu , Kan Li