collaborators

6 papers

cs.RO2026

Foresight Residual RL for Long-Horizon Robot Manipulation with Vision-Language-Action Models

Yuhan Liu, Xinyu Zhang, Litao Liu +1

Vision-Language-Action (VLA) policies offer strong general-purpose manipulation priors, but often fail on tight-tolerance, contact-rich assembly due to long-horizon credit assignme…

cs.RO2026

Affordance2Action: Task-Conditioned Scene-level Affordance Grounding for Real-Time Manipulation

Litao Liu, Yifan Han, Pengfei Yi +9

Task-conditioned manipulation requires grounding instructions to task-relevant functional parts rather than object categories. This setting is scene-dependent and often one-to-many…

cs.RO2026

DyGRO-VLA: Cross-Task Scaling of Vision-Language-Action Models via Dynamic Grouped Residual Optimization

Sixu Lin, Yunpeng Qing, Litao Liu +4

Recent progress in Reinforcement Learning (RL) provides a principled approach to optimizing Vision-Language-Action (VLA) models, facilitating a shift from trajectory imitation to a…

cs.RO2026

Viewpoint Matters: Dynamically Optimizing Viewpoints with Masked Autoencoder for Visual Manipulation

Pengfei Yi, Yifan Han, Junyan Li +2

Robotic manipulation continues to be a challenge, and imitation learning (IL) enables robots to learn tasks from expert demonstrations. Current IL methods typically rely on fixed c…

cs.RO2025

A Vision-Language-Action-Critic Model for Robotic Real-World Reinforcement Learning

Shaopeng Zhai, Qi Zhang, Tianyi Zhang +7

Robotic real-world reinforcement learning (RL) with vision-language-action (VLA) models is bottlenecked by sparse, handcrafted rewards and inefficient exploration. We introduce VLA…

cs.RO2025

FoAM: Foresight-Augmented Multi-Task Imitation Policy for Robotic Manipulation

Litao Liu, Wentao Wang, Yifan Han +5

Multi-task imitation learning (MTIL) has shown significant potential in robotic manipulation by enabling agents to perform various tasks using a single policy. This simplifies the…