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An open-source multi-goal reinforcement learning environment for robotic manipulation with Pybullet

Yang, Xintong ORCID:, Ji, Ze ORCID:, Wu, Jing ORCID: and Lai, Yu-Kun ORCID: 2021. An open-source multi-goal reinforcement learning environment for robotic manipulation with Pybullet. Presented at: 21st Towards Autonomous Robotic Systems Conference (TAROS 2021), Virtual, 8-10 September 2021. Published in: Fox, C., Gao, J., Ghalamzan Esfahani, A., Saaj, M., Hanheide, M. and Parsons, S. eds. Towards Autonomous Robotic Systems. TAROS 2021. Lecture Notes in Computer Science Springer, pp. 14-24.

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This work re-implements the OpenAI Gym multi-goal robotic manipulation environment, originally based on the commercial Mujoco engine, onto the open-source Pybullet engine. By comparing the performances of the Hindsight Experience Replay-aided Deep Deterministic Policy Gradient agent on both environments, we demonstrate our successful re-implementation of the original environment. Besides, we provide users with new APIs to access a joint control mode, image observations and goals with customisable camera and a built-in on-hand camera. We further design a set of multi-step, multi-goal, long-horizon and sparse reward robotic manipulation tasks, aiming to inspire new goal-conditioned reinforcement learning algorithms for such challenges. We use a simple, human-prior-based curriculum learning method to benchmark the multi-step manipulation tasks. Discussions about future research opportunities regarding this kind of tasks are also provided.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: In Press
Schools: Engineering
Publisher: Springer
ISBN: 9783030891763
Date of First Compliant Deposit: 20 July 2021
Last Modified: 26 Jan 2023 22:27

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