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20202026
most citedLeveraging Symmetry in RL-based Legged Locomotion Control

17 citations · 24 across the 18 of their papers we have counts for

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19 papers · 1 filter

cs.RO2026

Workhorse: Learning Robust Whole-Body Humanoid Loco-Manipulation from Human Data

Songbo Hu, Qiayuan Liao, Yufeng Chi +4

Humanoid robots still struggle to plan contact-rich whole-body manipulation from egocentric RGB and proprioception. Workhorse learns such manipulation from robot-free human demonst…

cs.RO2026

SPARK: Skeleton-Parameter Aligned Retargeting on Humanoid Robots with Kinodynamic Trajectory Optimization

Hanwen Wang, Qiayuan Liao, Bike Zhang +3

Human motion provides rich priors for training general-purpose humanoid control policies, but raw demonstrations are often incompatible with a robot's kinematics and dynamics, limi…

cs.RO2026

mjlab: A Lightweight Framework for GPU-Accelerated Robot Learning

Kevin Zakka, Qiayuan Liao, Brent Yi +3

We present mjlab, a lightweight, open-source framework for robot learning that combines GPU-accelerated simulation with composable environments and minimal setup friction. mjlab ad…

cs.RO2025

HITTER: A HumanoId Table TEnnis Robot via Hierarchical Planning and Learning

Zhi Su, Bike Zhang, Nima Rahmanian +5

Humanoid robots have recently achieved impressive progress in locomotion and whole-body control, yet they remain constrained in tasks that demand rapid interaction with dynamic env…

cs.RO2025

BeyondMimic: From Motion Tracking to Versatile Humanoid Control via Guided Diffusion

Qiayuan Liao, Takara E. Truong, Xiaoyu Huang +4

The human-like form of humanoid robots positions them uniquely to achieve the agility and versatility in motor skills that humans possess. Learning from human demonstrations offers…

cs.RO2025

LeVERB: Humanoid Whole-Body Control with Latent Vision-Language Instruction

Haoru Xue, Xiaoyu Huang, Dantong Niu +8

Vision-language-action (VLA) models have demonstrated strong semantic understanding and zero-shot generalization, yet most existing systems assume an accurate low-level controller…

cs.RO2025

LangWBC: Language-directed Humanoid Whole-Body Control via End-to-end Learning

Yiyang Shao, Xiaoyu Huang, Bike Zhang +6

General-purpose humanoid robots are expected to interact intuitively with humans, enabling seamless integration into daily life. Natural language provides the most accessible mediu…

cs.RO2025★ 1 cited

Demonstrating Berkeley Humanoid Lite: An Open-source, Accessible, and Customizable 3D-printed Humanoid Robot

Yufeng Chi, Qiayuan Liao, Junfeng Long +5

Despite significant interest and advancements in humanoid robotics, most existing commercially available hardware remains high-cost, closed-source, and non-transparent within the r…

cs.RO2025★ 1 cited

RoboCopilot: Human-in-the-loop Interactive Imitation Learning for Robot Manipulation

Philipp Wu, Yide Shentu, Qiayuan Liao +5

Learning from human demonstration is an effective approach for learning complex manipulation skills. However, existing approaches heavily focus on learning from passive human demon…

cs.RO2025★ 1 cited

MuJoCo Playground

Kevin Zakka, Baruch Tabanpour, Qiayuan Liao +10

We introduce MuJoCo Playground, a fully open-source framework for robot learning built with MJX, with the express goal of streamlining simulation, training, and sim-to-real transfe…

cs.RO2025

DDAT: Diffusion Policies Enforcing Dynamically Admissible Robot Trajectories

Jean-Baptiste Bouvier, Kanghyun Ryu, Kartik Nagpal +3

Diffusion models excel at creating images and videos thanks to their multimodal generative capabilities. These same capabilities have made diffusion models increasingly popular in…

cs.RO2024★ 1 cited

Learning Smooth Humanoid Locomotion through Lipschitz-Constrained Policies

Zixuan Chen, Xialin He, Yen-Jen Wang +8

Reinforcement learning combined with sim-to-real transfer offers a general framework for developing locomotion controllers for legged robots. To facilitate successful deployment in…

cs.RO2024★ 1 cited

CurricuLLM: Automatic Task Curricula Design for Learning Complex Robot Skills using Large Language Models

Kanghyun Ryu, Qiayuan Liao, Zhongyu Li +3

Curriculum learning is a training mechanism in reinforcement learning (RL) that facilitates the achievement of complex policies by progressively increasing the task difficulty duri…

cs.RO2024

Berkeley Humanoid: A Research Platform for Learning-based Control

Qiayuan Liao, Bike Zhang, Xuanyu Huang +3

We introduce Berkeley Humanoid, a reliable and low-cost mid-scale humanoid research platform for learning-based control. Our lightweight, in-house-built robot is designed specifica…

cs.RO2024

HiLMa-Res: A General Hierarchical Framework via Residual RL for Combining Quadrupedal Locomotion and Manipulation

Xiaoyu Huang, Qiayuan Liao, Yiming Ni +5

This work presents HiLMa-Res, a hierarchical framework leveraging reinforcement learning to tackle manipulation tasks while performing continuous locomotion using quadrupedal robot…

cs.RO2024★ 17 cited

Leveraging Symmetry in RL-based Legged Locomotion Control

Zhi Su, Xiaoyu Huang, Daniel Ordoñez-Apraez +8

Model-free reinforcement learning is a promising approach for autonomously solving challenging robotics control problems, but faces exploration difficulty without information of th…

cs.RO2022★ 1 cited

Walking in Narrow Spaces: Safety-critical Locomotion Control for Quadrupedal Robots with Duality-based Optimization

Qiayuan Liao, Zhongyu Li, Akshay Thirugnanam +2

This paper presents a safety-critical locomotion control framework for quadrupedal robots. Our goal is to enable quadrupedal robots to safely navigate in cluttered environments. To…

cs.RO2022

Real-time Trajectory Optimization and Control for Ball Bumping with Quadruped Robots

Qiayuan Liao, Zhefeng Cao, Hua Chen +1

This paper studies real-time motion planning and control for ball bumping motion with quadruped robots. To enable the quadruped to bump the flying ball with different initializatio…

cs.RO2020★ 1 cited

Review of Quadruped Robots for Dynamic Locomotion

Qiayuan Liao

This review introduces quadruped robots: MITCheetah, HyQ, ANYmal, BigDog, and their mechanical structure, actuation, and control.