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Large Language Models (LLMs) have exhibited impressive capabilities in various tasks, yet their vast parameter sizes restrict their applicability in resource-constrained settings. Knowledge distillation (KD) offers a viable solution by…

Computation and Language · Computer Science 2024-06-07 Rongzhi Zhang , Jiaming Shen , Tianqi Liu , Haorui Wang , Zhen Qin , Feng Han , Jialu Liu , Simon Baumgartner , Michael Bendersky , Chao Zhang

Recent advances in large language model (LLM) reasoning have shown that sophisticated behaviors such as planning and self-reflection can emerge through reinforcement learning (RL). However, despite these successes, RL in its current form…

Artificial Intelligence · Computer Science 2026-03-12 Lu Ma , Hao Liang , Meiyi Qiang , Lexiang Tang , Xiaochen Ma , Zhen Hao Wong , Junbo Niu , Chengyu Shen , Runming He , Yanhao Li , Bin Cui , Wentao Zhang

The strong performance of large vision-language models (VLMs) trained with reinforcement learning (RL) has motivated similar approaches for fine-tuning vision-language-action (VLA) models in robotics. Many recent works fine-tune VLAs…

Robotics · Computer Science 2026-03-31 Andrew Choi , Xinjie Wang , Zhizhong Su , Wei Xu

Vision-Language-Action (VLA) models have demonstrated significant potential in real-world robotic manipulation. However, pre-trained VLA policies still suffer from substantial performance degradation during downstream deployment. Although…

Robotics · Computer Science 2026-04-17 Zhuo Li , Junjia Liu , Zhipeng Dong , Tao Teng , Quentin Rouxel , Darwin Caldwell , Fei Chen

Vision-Language-Action (VLA) models have achieved remarkable progress in robotic manipulation by mapping multimodal observations and instructions directly to actions. However, they typically mimic expert trajectories without predictive…

End-to-end autonomous driving models based on Vision-Language-Action (VLA) architectures have shown promising results by learning driving policies through behavior cloning on expert demonstrations. However, imitation learning inherently…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Zihao Sheng , Xin Ye , Jingru Luo , Sikai Chen , Liu Ren

Reinforcement learning (RL) can refine Vision-Language-Action (VLA) policies beyond behavior cloning, but real-world RL remains expensive due to extensive rollouts, resets, supervision, and safety risks. Action-conditioned video world…

Robotics · Computer Science 2026-05-26 Xiaokang Liu , Zechen Bai , Hai Ci , Kevin Yuchen Ma , Mike Zheng Shou

In post-training for reasoning Large Language Models (LLMs), the current state of practice trains LLMs in two independent stages: Supervised Fine-Tuning (SFT) and Reinforcement Learning with Verifiable Rewards (RLVR, shortened as ``RL''…

Machine Learning · Computer Science 2025-10-03 Feiyang Kang , Michael Kuchnik , Karthik Padthe , Marin Vlastelica , Ruoxi Jia , Carole-Jean Wu , Newsha Ardalani

Vision-Language Models (VLMs) demonstrate remarkable general-purpose capabilities but often fall short in specialized domains such as medical imaging or geometric problem-solving. Supervised Fine-Tuning (SFT) can enhance performance within…

Computation and Language · Computer Science 2026-02-12 Yuming Yan , Shuo Yang , Kai Tang , Sihong Chen , Yang Zhang , Ke Xu , Dan Hu , Qun Yu , Pengfei Hu , Edith C. H. Ngai

Existing Vision-Language-Action (VLA) models often suffer from feature collapse and low training efficiency because they entangle high-level perception with sparse, embodiment-specific action supervision. Since these models typically rely…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Haitao Lin , Hanyang Yu , Jingshun Huang , He Zhang , Yonggen Ling , Ping Tan , Xiangyang Xue , Yanwei Fu

Vision-Language-Action (VLA) models exhibit strong generalization in robotic manipulation, yet reinforcement learning (RL) fine-tuning often degrades robustness under spatial distribution shifts. For flow-matching VLA policies, this…

Robotics · Computer Science 2026-02-03 Xu Pan , Zhenglin Wan , Xingrui Yu , Xianwei Zheng , Youkai Ke , Ming Sun , Rui Wang , Ziwei Wang , Ivor Tsang

The success of Large Language Models (LLMs) has inspired the development of Multimodal Large Language Models (MLLMs) for unified understanding of vision and language. However, the increasing model size and computational complexity of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Yuxuan Cai , Jiangning Zhang , Haoyang He , Xinwei He , Ao Tong , Zhenye Gan , Chengjie Wang , Zhucun Xue , Yong Liu , Xiang Bai

As Large Language Models (LLMs) continue to grow in both capability and cost, transferring frontier capabilities into smaller, deployable students has become a central engineering problem, and knowledge distillation remains the dominant…

Machine Learning · Computer Science 2026-05-19 Mingyang Song , Mao Zheng

Despite large language models (LLMs) have achieved impressive achievements across numerous tasks, supervised fine-tuning (SFT) remains essential for adapting these models to specialized domains. However, SFT for domain specialization can be…

Computation and Language · Computer Science 2025-11-13 Yibai Liu , Shihang Wang , Zeming Liu , Zheming Song , Junzhe Wang , Jingjing Liu , Qingjie Liu , Yunhong Wang

Recent advancements in large language models (LLMs) have demonstrated that progressive refinement, rather than providing a single answer, results in more accurate and thoughtful outputs. However, existing methods often rely heavily on…

Computation and Language · Computer Science 2024-10-18 Chengyu Du , Jinyi Han , Yizhou Ying , Aili Chen , Qianyu He , Haokun Zhao , Sirui Xia , Haoran Guo , Jiaqing Liang , Zulong Chen , Liangyue Li , Yanghua Xiao

Multi-modal Large Language Models (MLLMs) show promise in video understanding. However, their reasoning often suffers from thinking drift and weak temporal comprehension, even when enhanced by Reinforcement Learning (RL) techniques like…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Peiyao Wang , Haotian Xu , Noranart Vesdapunt , Rui Hou , Jingyi Zhang , Haibin Ling , Oleksandr Obiednikov , Ning Zhou , Kah Kuen Fu

The integration of LLMs into vulnerability detection (VD) has shifted the field toward more interpretable and context-aware analysis. While post-training techniques have shown promise in general coding tasks, their systematic application to…

Cryptography and Security · Computer Science 2026-05-05 Youpeng Li , Fuxun Yu , Xinda Wang

One paradigm of language model (LM) fine-tuning relies on creating large training datasets, under the assumption that high quantity and diversity will enable models to generalize to novel tasks after post-training. In practice, gathering…

Machine Learning · Computer Science 2025-10-10 Emre Can Acikgoz , Cheng Qian , Heng Ji , Dilek Hakkani-Tür , Gokhan Tur

Understanding real-world videos with complex semantics and long temporal dependencies remains a fundamental challenge in computer vision. Recent progress in multimodal large language models (MLLMs) has demonstrated strong capabilities in…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Hongyu Li , Songhao Han , Yue Liao , Junfeng Luo , Jialin Gao , Shuicheng Yan , Si Liu

Training vision-language models (VLMs) for complex reasoning remains a challenging task, i.a. due to the scarcity of high-quality image-text reasoning data. Conversely, text-based reasoning resources are abundant and scalable, but it is…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Walid Bousselham , Hilde Kuehne , Cordelia Schmid