← Search

Zechu Li

7 accepted papers

2026

SE(3)-PoseFlow: Estimating 6D Pose Distributions for Uncertainty-Aware Robotic Manipulation

ICRA 2026poster

Object pose estimation is a fundamental problem in robotics and computer vision, yet it remains challenging due to partial observability, occlusions, and object symmetries, which inevitably lead to pose ambiguity and multiple hypotheses consistent with the same observation. While deterministic deep …

2025

DIME: Diffusion-Based Maximum Entropy Reinforcement Learning

ICML 2025poster

Maximum entropy reinforcement learning (MaxEnt-RL) has become the standard approach to RL due to its beneficial exploration properties. Traditionally, policies are parameterized using Gaussian distributions, which significantly limits their representational capacity. Diffusion-based policies offer a…

Cited by 0SourcePDFScholar
2025

Morphologically Symmetric Reinforcement Learning for Ambidextrous Bimanual Manipulation

CoRL 2025poster

Humans naturally exhibit bilateral symmetry in their gross manipulation skills, effortlessly mirroring simple actions between left and right hands. Bimanual robots—which also feature bilateral symmetry—should similarly exploit this property to perform tasks with either hand. Unlike humans, who often…

Cited by 0SourceScholar
2024

Learning Multimodal Behaviors from Scratch with Diffusion Policy Gradient

NeurIPS 2024poster

Deep reinforcement learning (RL) algorithms typically parameterize the policy as a deep network that outputs either a deterministic action or a stochastic one modeled as a Gaussian distribution, hence restricting learning to a single behavioral mode. Meanwhile, diffusion models emerged as a powerful…

2024

Reconciling Reality through Simulation: A Real-To-Sim-to-Real Approach for Robust Manipulation

RSS 2024poster

Imitation learning methods need significant human supervision to learn policies robust to changes in object poses, physical disturbances, and visual distractors. Reinforcement learning, on the other hand, can explore the environment autonomously to learn robust behaviors but may require impractical…

Cited by 55SourcePDFScholar
2023

Parallel $Q$-Learning: Scaling Off-policy Reinforcement Learning under Massively Parallel Simulation

ICML 2023poster

Reinforcement learning is time-consuming for complex tasks due to the need for large amounts of training data. Recent advances in GPU-based simulation, such as Isaac Gym, have sped up data collection thousands of times on a commodity GPU. Most prior works have used on-policy methods like PPO due to…