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The growth of online platforms and user content requires strong content moderation systems that can handle complex inputs from various media types. While large language models (LLMs) are effective, their high computational cost and latency…

Computation and Language · Computer Science 2026-04-09 Shutong Zhang , Dylan Zhou , Yinxiao Liu , Yang Yang , Huiwen Luo , Wenfei Zou

Real-world decision-making tasks typically occur in complex and open environments, posing significant challenges to reinforcement learning (RL) agents' exploration efficiency and long-horizon planning capabilities. A promising approach is…

Machine Learning · Computer Science 2025-09-29 Yajie Qi , Wei Wei , Lin Li , Lijun Zhang , Zhidong Gao , Da Wang , Huizhong Song

The success of Large Language Models (LLMs) has significantly propelled the research of video understanding. To harvest the benefits of well-trained expert models (i.e., tools), video LLMs prioritize the exploration of tool usage…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Yuyang Liu , Meng Cao , Xinyuan Shi , Xiaondan Liang

Multi-modal Large Language Model (MLLM) refers to a model expanded from a Large Language Model (LLM) that possesses the capability to handle and infer multi-modal data. Current MLLMs typically begin by using LLMs to decompose tasks into…

Computation and Language · Computer Science 2023-09-01 Yongqiang Zhao , Zhenyu Li , Feng Zhang , Xinhai Xu , Donghong Liu

Large language models (LLMs) have notably progressed in multi-step and long-chain reasoning. However, extending their reasoning capabilities to encompass deep interactions with search remains a non-trivial challenge, as models often fail to…

Computation and Language · Computer Science 2025-06-05 Qingfei Zhao , Ruobing Wang , Dingling Xu , Daren Zha , Limin Liu

Tools are essential for large language models (LLMs) to acquire up-to-date information and take consequential actions in external environments. Existing work on tool-augmented LLMs primarily focuses on the broad coverage of tools and the…

Computation and Language · Computer Science 2024-03-08 Boshi Wang , Hao Fang , Jason Eisner , Benjamin Van Durme , Yu Su

Recent advances in Reinforcement Learning (RL) have underscored its potential for incentivizing reasoning capabilities of Large Language Models (LLMs). However, existing step-level efforts suffer from costly annotations that limit domain…

Machine Learning · Computer Science 2026-05-20 Junjie Zhang , Guozheng Ma , Shunyu Liu , Zetian Hu , Yongcheng Jing , Ting-En Lin , Yongbin Li , Dacheng Tao

Reinforcement fine-tuning played an instrumental role in enhancing the instruction-following and reasoning abilities of large language models. In this work, we employ reinforcement fine-tuning for materials design, in which discriminative…

Materials Science · Physics 2026-01-19 Zhendong Cao , Lei Wang

Multimodal Large Language Models (MLLMs) have shown impressive results on various multimodal tasks. However, most existing MLLMs are not well suited for document-oriented tasks, which require fine-grained image perception and information…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Ya-Qi Yu , Minghui Liao , Jihao Wu , Yongxin Liao , Xiaoyu Zheng , Wei Zeng

Despite their success in many natural language tasks, solving math problems remains a significant challenge for large language models (LLMs). A large gap exists between LLMs' pass-at-one and pass-at-N performance in solving math problems,…

Computation and Language · Computer Science 2023-10-17 Yixin Liu , Avi Singh , C. Daniel Freeman , John D. Co-Reyes , Peter J. Liu

Large language models (LLMs) have been demonstrated to possess the capabilities to understand fundamental graph properties and address various graph reasoning tasks. Existing methods fine-tune LLMs to understand and execute graph reasoning…

Machine Learning · Computer Science 2024-12-18 Rongzheng Wang , Shuang Liang , Qizhi Chen , Jiasheng Zhang , Ke Qin

Large Language Models (LLMs) frequently lack domain-specific knowledge and even fine-tuned models tend to hallucinate. Hence, more reliable models that can include external knowledge are needed. We present a pipeline, 4StepFocus, and…

Computation and Language · Computer Science 2024-09-04 Derian Boer , Fabian Koch , Stefan Kramer

We propose a Reinforcement Learning (RL) based control design framework for handling complex tasks. The approach extends the concept of Reward Machines (RM) with Signal Temporal Logic (STL) formulas that can be used for event generation.…

Artificial Intelligence · Computer Science 2026-04-17 Ana María Gómez Ruiz , Thao Dang , Alexandre Donzé

Large language models (LLM) have achieved remarkable performance on various NLP tasks and are augmented by tools for broader applications. Yet, how to evaluate and analyze the tool-utilization capability of LLMs is still under-explored. In…

Computation and Language · Computer Science 2024-01-17 Zehui Chen , Weihua Du , Wenwei Zhang , Kuikun Liu , Jiangning Liu , Miao Zheng , Jingming Zhuo , Songyang Zhang , Dahua Lin , Kai Chen , Feng Zhao

Supervised fine-tuning (SFT) has emerged as one of the most effective ways to improve the performance of large language models (LLMs) in downstream tasks. However, SFT can have difficulty generalizing when the underlying data distribution…

Computation and Language · Computer Science 2025-12-15 Mrinal Rawat , Arkajyoti Chakraborty , Neha Gupta , Roberto Pieraccini

Reinforcement learning (RL) has emerged as a powerful paradigm for enhancing the reasoning capabilities of large language models (LLMs). While RL has demonstrated substantial performance gains, it still faces key challenges, including low…

Machine Learning · Computer Science 2025-11-18 Yihang Yao , Guangtao Zeng , Raina Wu , Yang Zhang , Ding Zhao , Zhang-Wei Hong , Chuang Gan

Large language models (LLMs) hold the promise of solving diverse tasks when provided with appropriate natural language prompts. However, prompting often leads models to make predictions with lower accuracy compared to finetuning a model…

Computation and Language · Computer Science 2024-08-13 Chenyang Zhao , Xueying Jia , Vijay Viswanathan , Tongshuang Wu , Graham Neubig

Reinforcement learning (RL) can align language models with non-differentiable reward signals, such as human preferences. However, a major challenge arises from the sparsity of these reward signals - typically, there is only a single reward…

Computation and Language · Computer Science 2024-02-20 Meng Cao , Lei Shu , Lei Yu , Yun Zhu , Nevan Wichers , Yinxiao Liu , Lei Meng

Reinforcement Learning (RL) has emerged as a transformative approach for aligning and enhancing Large Language Models (LLMs), addressing critical challenges in instruction following, ethical alignment, and reasoning capabilities. This…

Artificial Intelligence · Computer Science 2025-07-08 Saksham Sahai Srivastava , Vaneet Aggarwal

Large language models (LLMs) have achieved remarkable progress in reasoning tasks, yet the optimal integration of Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL) remains a fundamental challenge. Through comprehensive analysis…

Computation and Language · Computer Science 2025-06-25 Yuqian Fu , Tinghong Chen , Jiajun Chai , Xihuai Wang , Songjun Tu , Guojun Yin , Wei Lin , Qichao Zhang , Yuanheng Zhu , Dongbin Zhao