arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.12421cs.RO
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具身导航Agent的双向领域自适应Sim2Real迁移

Bi-directional Domain Adaptation for Sim2Real Transfer of Embodied Navigation Agents

Georgia Institute of Technology(佐治亚理工学院);Facebook AI Research(Facebook人工智能研究院)

Joanne Truong, Sonia Chernova, Dhruv Batra

摘要:

深度强化学习模型是众所周知的数据饥渴,但现实世界的数据是昂贵和耗时的获得。许多人转向的解决方案是在将机器人部署到真实环境中之前使用模拟进行训练。仿真提供了并行训练大量机器人的能力,并提供了丰富的数据。然而,没有一个模拟是完美的,仅仅在模拟中训练的机器人无法推广到现实世界,导致了“模拟与真实的差距”。我们如何克服模拟器中大量不太准确的人工数据与可靠的真实数据之间的权衡?在本文中,我们提出了双向领域自适应(BDA),一种新的方法,以弥合模拟与真实的差距在两个方向-real 2sim弥合视觉域的差距,和sim 2 real弥合动态域的差距。我们展示了BDA在PointGoal导航任务上的好处。只有5 k个真实世界(状态,动作,下一状态)样本的BDA与使用约600 k个样本微调的策略的性能相匹配,从而实现约120倍的速度提升。

英文摘要:

Deep reinforcement learning models are notoriously data hungry, yet real-world data is expensive and time consuming to obtain. The solution that many have turned to is to use simulation for training before deploying the robot in a real environment. Simulation offers the ability to train large numbers of robots in parallel, and offers an abundance of data. However, no simulation is perfect, and robots trained solely in simulation fail to generalize to the real-world, resulting in a "sim-vs-real gap". How can we overcome the trade-off between the abundance of less accurate, artificial data from simulators and the scarcity of reliable, real-world data? In this paper, we propose Bi-directional Domain Adaptation (BDA), a novel approach to bridge the sim-vs-real gap in both directions -- real2sim to bridge the visual domain gap, and sim2real to bridge the dynamics domain gap. We demonstrate the benefits of BDA on the task of PointGoal Navigation. BDA with only 5k real-world (state, action, next-state) samples matches the performance of a policy fine-tuned with ~600k samples, resulting in a speed-up of ~120x.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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