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Yen-Jen Wang

11 accepted papers

2026

Learning Dexterous Manipulation Skills from Imperfect Simulations

ICRA 2026poster

Reinforcement learning and sim-to-real transfer have made significant progress in dexterous manipulation. However, progress remains limited by the difficulty of simulating complex contact dynamics and multisensory signals, especially tactile feedback. In this work, we propose DexScrew, a sim-to-real…

2026

MomaGraph: State-Aware Unified Scene Graphs with Vision-Language Models for Embodied Task Planning

ICLR 2026oral

Mobile manipulators in households must both navigate and manipulate. This requires a compact, semantically rich scene representation that captures where objects are, how they function, and which parts are actionable. Scene graphs are a natural choice, yet prior work often separates spatial and funct…

Cited by 0SourcecodeScholar
2025

Improving Vision-Language-Action Model with Online Reinforcement Learning

ICRA 2025

Recent studies have successfully integrated large vision-language models (VLMs) into low-level robotic control by supervised fine-tuning (SFT) with expert robotic datasets, resulting in what we term vision-language-action (VLA) models. Although the VLA models are powerful, how to improve these large

Cited by 78SourceScholar
2025

Learning Smooth Humanoid Locomotion through Lipschitz-Constrained Policies

IROS 2025

Reinforcement learning combined with sim-to-real transfer offers a general framework for developing locomotion controllers for legged robots. To facilitate successful deployment in the real world, smoothing techniques, such as low-pass filters and smoothness rewards, are often employed to develop po

Cited by 49SourcecodeScholar
2025

Video Prediction Policy: A Generalist Robot Policy with Predictive Visual Representations

ICML 2025spotlight

Visual representations play a crucial role in developing generalist robotic policies. Previous vision encoders, typically pre-trained with single-image reconstruction or two-image contrastive learning, tend to capture static information, often neglecting the dynamic aspects vital for embodied tasks.…

2024

Advancing Humanoid Locomotion: Mastering Challenging Terrains with Denoising World Model Learning

RSS 2024poster

Humanoid robots, with their human-like skeletal structure, are especially suited for tasks in human-centric environments. However, this structure is accompanied by additional challenges in locomotion controller design, especially in complex real-world environments. As a result, existing humanoid rob…

2024

DoReMi: Grounding Language Model by Detecting and Recovering from Plan-Execution Misalignment

IROS 2024poster

Large language models (LLMs) encode a vast amount of semantic knowledge and possess remarkable understanding and reasoning capabilities. Previous work has explored how to ground LLMs in robotic tasks to generate feasible and executable textual plans. However, low-level execution in the physical worl…

Cited by 37SourceScholar
2024

HiRT: Enhancing Robotic Control with Hierarchical Robot Transformers

CoRL 2024poster

Large Vision-Language-Action (VLA) models, leveraging powerful pre-trained Vision-Language Models (VLMs) backends, have shown promise in robotic control due to their impressive generalization ability. However, the success comes at a cost. Their reliance on VLM backends with billions of parameters le…

Cited by 8SourceScholar
2024

Prediction with Action: Visual Policy Learning via Joint Denoising Process

NeurIPS 2024poster

Diffusion models have demonstrated remarkable capabilities in image generation tasks, including image editing and video creation, representing a good understanding of the physical world. On the other line, diffusion models have also shown promise in robotic control tasks by denoising actions, known…

Cited by 4SourcePDFScholar
2023

Decentralized Motor Skill Learning for Complex Robotic Systems

RA-L 2023

Reinforcement learning (RL) has achieved remarkable success in complex robotic systems (eg. quadruped locomotion). In previous works, the RL-based controller was typically implemented as a single neural network with concatenated observation input. However, the corresponding learned policy is highly

Cited by 9SourceScholar