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Autoregressive (AR) decoding is a major latency bottleneck for large language models. Speculative decoding (SD) accelerates AR by letting a drafter propose multi-token blocks that a verifier accepts or rejects. However, many SD systems…

Machine Learning · Computer Science 2025-10-08 Shrenik Bhansali , Larry Heck

Diffusion-based decoding has recently emerged as an appealing alternative to autoregressive (AR) generation, offering the potential to update multiple tokens in parallel and reduce latency. However, diffusion vision language models (dVLMs)…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Lunbin Zeng , Jingfeng Yao , Bencheng Liao , Hongyuan Tao , Wenyu Liu , Xinggang Wang

Recent progress in Reinforcement Learning (RL) provides a principled approach to optimizing Vision-Language-Action (VLA) models, facilitating a shift from trajectory imitation to active learning in the task environment. Despite improvements…

Robotics · Computer Science 2026-05-19 Sixu Lin , Yunpeng Qing , Litao Liu , Ming Zhou , Ruixing Jin , Xiaoyi Fan , Guiliang Liu

Long-form video understanding remains challenging for Vision-Language Models (VLMs) due to the inherent tension between computational constraints and the need to capture information distributed across thousands of frames. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Junbo Zou , Ziheng Huang , Shengjie Zhang , Liwen Zhang , Weining Shen

The safe deployment of autonomous driving systems (ADSs) relies on comprehensive testing and evaluation. However, safety-critical scenarios that can effectively expose system vulnerabilities are extremely sparse in the real world. Existing…

Robotics · Computer Science 2025-12-03 Xinzheng Wu , Junyi Chen , Naiting Zhong , Yong Shen

Vision-Language-Action (VLA) models remain brittle in long-horizon, contact-rich manipulation because success-only imitation provides little supervision for execution drift, while failed rollouts are often discarded. We introduce RePO-VLA,…

Vision-Language-Action (VLA) models have demonstrated remarkable capabilities and generalization in embodied manipulation. However, their decision-making relies on a fast, instinctive process that lacks deliberation. This strategy often…

Robotics · Computer Science 2026-05-29 Wenhao Li , Xiu Su , Yichao Cao , Hongyan Xu , Xiaobo Xia , Shan You , Yi Chen , Chang Xu

The growing success of Vision-Language-Action (VLA) models stems from the promise that pretrained Vision-Language Models (VLMs) can endow agents with transferable world knowledge and vision-language (VL) grounding, laying a foundation for…

Machine Learning · Computer Science 2025-10-30 Nikita Kachaev , Mikhail Kolosov , Daniil Zelezetsky , Alexey K. Kovalev , Aleksandr I. Panov

Vision-language-action models must enable agents to execute long-horizon tasks under partial observability. However, most existing approaches remain observation-driven, relying on short context windows or repeated queries to vision-language…

Artificial Intelligence · Computer Science 2026-02-26 Vaidehi Bagaria , Bijo Sebastian , Nirav Kumar Patel

Recent studies on Vision-Language-Action (VLA) models have shifted from the end-to-end action-generation paradigm toward a pipeline involving task planning followed by action generation, demonstrating improved performance on various…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Chongkai Gao , Zixuan Liu , Zhenghao Chi , Junshan Huang , Xin Fei , Yiwen Hou , Yuxuan Zhang , Yudi Lin , Zhirui Fang , Zeyu Jiang , Lin Shao

End-to-end autonomous driving systems based on vision-language-action (VLA) models integrate multimodal sensor inputs and language instructions to generate planning and control signals. While autoregressive large language models and…

Robotics · Computer Science 2025-12-17 Mingwang Xu , Jiahao Cui , Feipeng Cai , Hanlin Shang , Zhihao Zhu , Shan Luan , Yifang Xu , Neng Zhang , Yaoyi Li , Jia Cai , Siyu Zhu

Robotic real-world reinforcement learning (RL) with vision-language-action (VLA) models is bottlenecked by sparse, handcrafted rewards and inefficient exploration. We introduce VLAC, a general process reward model built upon InternVL and…

Vision-language-action (VLA) models have recently emerged as a powerful paradigm for building generalist robots. However, traditional VLA models that generate actions through flow matching (FM) typically rely on rigid and uniform time…

Robotics · Computer Science 2026-05-08 Yuhua Jiang , Shuang Cheng , Yan Ding , Feifei Gao , Biqing Qi

Recent advancements in Vision-Language-Action (VLA) models have shown promise for end-to-end autonomous driving by leveraging world knowledge and reasoning capabilities. However, current VLA models often struggle with physically infeasible…

Computer Vision and Pattern Recognition · Computer Science 2025-11-07 Zewei Zhou , Tianhui Cai , Seth Z. Zhao , Yun Zhang , Zhiyu Huang , Bolei Zhou , Jiaqi Ma

Vision-language-action (VLA) models have emerged as generalist robotic controllers capable of mapping visual observations and natural language instructions to continuous action sequences. However, VLAs provide no calibrated measure of…

Robotics · Computer Science 2026-04-21 Lingling Chen , Zongyao Lyu , William J. Beksi

Vision-Language-Action (VLA) models excel at robotic tasks by leveraging large-scale 2D vision-language pretraining, but their reliance on RGB images limits spatial reasoning critical for real-world interaction. Retraining these models with…

Robotics · Computer Science 2025-03-11 Chengmeng Li , Junjie Wen , Yan Peng , Yaxin Peng , Feifei Feng , Yichen Zhu

Vision-Language-Action (VLA) models improve action generation by conditioning policies on rich vision-language information. However, current auto-regressive policies are constrained by three bottlenecks: (1) architectural bias drives models…

Robotics · Computer Science 2026-03-31 Yichi Zhang , Weihao Yuan , Yizhuo Zhang , Xidong Zhang , Jia Wan

Modern image classification is based upon directly predicting classes via large discriminative networks, which do not directly contain information about the intuitive visual features that may constitute a classification decision. Recently,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Zhili Feng , Anna Bair , J. Zico Kolter

We adapt a pre-trained Vision-Language-Action (VLA) model (Open-VLA) for dexterous human-robot collaboration with minimal language prompting. Our approach adds (i) FiLM conditioning to visual backbones for task-aware perception, (ii) an…

Robotics · Computer Science 2025-10-30 Boshi An , Chenyu Yang , Robert Katzschmann

Vision-Language-Action (VLA) models, trained via flow-matching or diffusion objectives, excel at learning complex behaviors from large-scale, multi-modal datasets (e.g., human teleoperation, scripted policies). However, since VLAs…

Robotics · Computer Science 2025-12-03 Siyuan Yang , Yang Zhang , Haoran He , Ling Pan , Xiu Li , Chenjia Bai , Xuelong Li