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20242026
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cs.RO2026

Beyond Flat Policies: Hierarchical Post-Training for Embodied Agents in Robotic Manipulation

He Kong, Zengjue Chen, Qi Wang +6

Vision-language-action (VLA) models have demonstrated remarkable capabilities in robotic manipulation by leveraging pretrained vision-language models. However, existing post-traini…

cs.RO2026

World Action Models are Zero-shot Policies

Seonghyeon Ye, Yunhao Ge, Kaiyuan Zheng +33

State-of-the-art Vision-Language-Action (VLA) models excel at semantic generalization but struggle to generalize to unseen physical motions in novel environments. We introduce Drea…

cs.RO2025

TGRPO :Fine-tuning Vision-Language-Action Model via Trajectory-wise Group Relative Policy Optimization

Zengjue Chen, Runliang Niu, He Kong +3

Visual-Language-Action (VLA) models have demonstrated strong cross-scenario generalization capabilities in various robotic tasks through large-scale pre-training and task-specific…

cs.RO2025

Dual-Actor Fine-Tuning of VLA Models: A Talk-and-Tweak Human-in-the-Loop Approach

Piaopiao Jin, Qi Wang, Guokang Sun +3

Vision-language-action (VLA) models demonstrate strong generalization in robotic manipulation but face challenges in complex, real-world tasks. While supervised fine-tuning with de…

cs.RO2025

CarPlanner: Consistent Auto-regressive Trajectory Planning for Large-scale Reinforcement Learning in Autonomous Driving

Dongkun Zhang, Jiaming Liang, Ke Guo +5

Trajectory planning is vital for autonomous driving, ensuring safe and efficient navigation in complex environments. While recent learning-based methods, particularly reinforcement…

cs.RO2024

Effort Allocation for Deadline-Aware Task and Motion Planning: A Metareasoning Approach

Yoonchang Sung, Shahaf S. Shperberg, Qi Wang +1

In robot planning, tasks can often be achieved through multiple options, each consisting of several actions. This work specifically addresses deadline constraints in task and motio…