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Recent strides in large language models (LLMs) have yielded remarkable performance, leveraging reinforcement learning from human feedback (RLHF) to significantly enhance generation and alignment capabilities. However, RLHF encounters…

Computation and Language · Computer Science 2024-05-31 Kuo Liao , Shuang Li , Meng Zhao , Liqun Liu , Mengge Xue , Zhenyu Hu , Honglin Han , Chengguo Yin

Reinforcement learning (RL) has recently emerged as a compelling approach for enhancing the reasoning capabilities of large language models (LLMs), where an LLM generator serves as a policy guided by a verifier (reward model). However,…

Machine Learning · Computer Science 2025-10-24 Kaiwen Zha , Zhengqi Gao , Maohao Shen , Zhang-Wei Hong , Duane S. Boning , Dina Katabi

Large Language Models (LLMs) have demonstrated remarkable capabilities across diverse domains, including programming, planning, and decision-making. However, their performance often degrades when faced with highly complex problem instances…

Artificial Intelligence · Computer Science 2025-08-21 Yang Cheng , Zilai Wang , Weiyu Ma , Wenhui Zhu , Yue Deng , Jian Zhao

While Large Language Models (LLMs) exhibit remarkable capabilities, they also introduce significant safety and privacy risks. Current mitigation strategies often fail to preserve contextual reasoning capabilities in risky scenarios.…

Computation and Language · Computer Science 2025-09-05 Wenbin Hu , Haoran Li , Huihao Jing , Qi Hu , Ziqian Zeng , Sirui Han , Heli Xu , Tianshu Chu , Peizhao Hu , Yangqiu Song

Large Language Models (LLMs) demonstrate strong capabilities in general coding tasks but encounter two key challenges when optimizing code: (i) the complexity of writing optimized code (such as performant CUDA kernels and competition-level…

Machine Learning · Computer Science 2026-01-12 Jiefu Ou , Sapana Chaudhary , Kaj Bostrom , Nathaniel Weir , Shuai Zhang , Huzefa Rangwala , George Karypis

Elucidating the reasoning process with structured explanations from question to answer is crucial, as it significantly enhances the interpretability, traceability, and trustworthiness of question-answering (QA) systems. However, structured…

Computation and Language · Computer Science 2024-09-30 Guoxin Chen , Kexin Tang , Chao Yang , Fuying Ye , Yu Qiao , Yiming Qian

Reward models (RMs) are fundamental to aligning Large Language Models (LLMs) via human feedback, yet they often suffer from reward hacking. They tend to latch on to superficial or spurious attributes, such as response length or formatting,…

Reinforcement learning (RL) has emerged as a critical technique for enhancing LLM-based deep search agents. However, existing approaches primarily rely on binary outcome rewards, which fail to capture the comprehensiveness and factuality of…

Computation and Language · Computer Science 2026-01-12 Jiajie Zhang , Xin Lv , Ling Feng , Lei Hou , Juanzi Li

Teaching large language models (LLMs) to critique and refine their outputs is crucial for building systems that can iteratively improve, yet it is fundamentally limited by the ability to provide accurate judgments and actionable…

Machine Learning · Computer Science 2025-12-02 Zhihui Xie , Jie Chen , Liyu Chen , Weichao Mao , Jingjing Xu , Lingpeng Kong

Code generation with large language models (LLMs), often termed vibe coding, is increasingly adopted in production but fails to ensure code quality, particularly in security (e.g., SQL injection vulnerabilities) and maintainability (e.g.,…

Computation and Language · Computer Science 2025-05-30 Feng Yao , Zilong Wang , Liyuan Liu , Junxia Cui , Li Zhong , Xiaohan Fu , Haohui Mai , Vish Krishnan , Jianfeng Gao , Jingbo Shang

Reinforcement Learning (RL) has demonstrated significant potential in enhancing the reasoning capabilities of large language models (LLMs). However, the success of RL for LLMs heavily relies on human-curated datasets and verifiable rewards,…

Artificial Intelligence · Computer Science 2025-10-31 Yixing Chen , Yiding Wang , Siqi Zhu , Haofei Yu , Tao Feng , Muhan Zhang , Mostofa Patwary , Jiaxuan You

Large language models show strong potential for automated code generation, but lack guarantees for correctness, quality, safety, and domain-specific constraints. For instance in robotics, where code generation is increasingly being used for…

Machine Learning · Computer Science 2026-05-21 Erfan Aghadavoodi Jolfaei , Daniel Maninger , Abhinav Anand , Mert Tiftikci , Mira Mezini

Large language models (LLMs) achieve strong performance on plain text tasks but underperform on structured data like tables and databases. Potential challenges arise from their underexposure during pre-training and rigid text-to-structure…

Computation and Language · Computer Science 2025-07-28 Jiawei Gu , Ziting Xian , Yuanzhen Xie , Ye Liu , Enjie Liu , Ruichao Zhong , Mochi Gao , Yunzhi Tan , Bo Hu , Zang Li

Recent advancements in long chain-of-thought (CoT) reasoning, particularly through the Group Relative Policy Optimization algorithm used by DeepSeek-R1, have led to significant interest in the potential of Reinforcement Learning with…

Artificial Intelligence · Computer Science 2025-10-03 Xumeng Wen , Zihan Liu , Shun Zheng , Shengyu Ye , Zhirong Wu , Yang Wang , Zhijian Xu , Xiao Liang , Junjie Li , Ziming Miao , Jiang Bian , Mao Yang

Unit tests (UTs) play an instrumental role in assessing code correctness as well as providing feedback to large language models (LLMs), motivating automated test generation. However, we uncover a trade-off between generating unit test…

Software Engineering · Computer Science 2025-08-22 Archiki Prasad , Elias Stengel-Eskin , Justin Chih-Yao Chen , Zaid Khan , Mohit Bansal

Training LLMs for code-related tasks typically depends on high-quality code-documentation pairs, which are costly to curate and often scarce for niche programming languages. We introduce BatCoder, a self-supervised reinforcement learning…

Reinforcement Learning with Verifiable Rewards (RLVR) improves reasoning in large language models but treats all correct solutions equally, potentially reinforcing flawed traces that get correct answers by chance. We observe that better…

Machine Learning · Computer Science 2026-03-11 Tiehua Mei , Minxuan Lv , Leiyu Pan , Zhenpeng Su , Hongru Hou , Hengrui Chen , Ao Xu , Deqing Yang

Reasoning-augmented search agents, such as Search-R1, are trained to reason, search, and generate the final answer iteratively. Nevertheless, due to their limited capabilities in reasoning and search, their performance on multi-hop QA…

Computation and Language · Computer Science 2025-10-14 Shu Zhao , Tan Yu , Anbang Xu

Existing synthetic tool-use corpora are primarily designed for offline supervised fine-tuning, yet reinforcement learning (RL) requires executable environments that support reward-checkable online rollouts. We propose COVERT, a two-stage…

Artificial Intelligence · Computer Science 2026-04-14 Siyuan Xu , Shiyang Li , Xin Liu , Tianyi Liu , Yixiao Li , Zhan Shi , Zixuan Zhang , Zilong Wang , Qingyu Yin , Jianshu Chen , Tuo Zhao , Bing Yin

Quantum error correction is widely thought to be the key to fault-tolerant quantum computation. However, determining the most suited encoding for unknown error channels or specific laboratory setups is highly challenging. Here, we present a…