Search Results for author: Zifan Xu

Found 7 papers, 3 papers with code

Dexterous Legged Locomotion in Confined 3D Spaces with Reinforcement Learning

no code implementations6 Mar 2024 Zifan Xu, Amir Hossain Raj, Xuesu Xiao, Peter Stone

To address the inefficiency of tracking distant navigation goals, we introduce a hierarchical locomotion controller that combines a classical planner tasked with planning waypoints to reach a faraway global goal location, and an RL-based policy trained to follow these waypoints by generating low-level motion commands.

Navigate reinforcement-learning +1

Sample Efficient Myopic Exploration Through Multitask Reinforcement Learning with Diverse Tasks

no code implementations3 Mar 2024 Ziping Xu, Zifan Xu, Runxuan Jiang, Peter Stone, Ambuj Tewari

Multitask Reinforcement Learning (MTRL) approaches have gained increasing attention for its wide applications in many important Reinforcement Learning (RL) tasks.

reinforcement-learning Reinforcement Learning (RL)

Latent Skill Discovery for Chain-of-Thought Reasoning

no code implementations7 Dec 2023 Zifan Xu, Haozhu Wang, Dmitriy Bespalov, Peter Stone, Yanjun Qi

Simultaneously, RSD learns a reasoning policy to determine the required reasoning skill for a given question.

Math

Causal Dynamics Learning for Task-Independent State Abstraction

1 code implementation27 Jun 2022 Zizhao Wang, Xuesu Xiao, Zifan Xu, Yuke Zhu, Peter Stone

Learning dynamics models accurately is an important goal for Model-Based Reinforcement Learning (MBRL), but most MBRL methods learn a dense dynamics model which is vulnerable to spurious correlations and therefore generalizes poorly to unseen states.

Model-based Reinforcement Learning

A Scavenger Hunt for Service Robots

1 code implementation9 Mar 2021 Harel Yedidsion, Jennifer Suriadinata, Zifan Xu, Stefan Debruyn, Peter Stone

In this problem, the goal is to find a set of objects as quickly as possible, given probability distributions of where they may be found.

Reinforcement Learning (RL)

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