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arXiv 2201.08102cs.LG
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使用人的反馈在3D环境中进行安全的深度RL

Safe Deep RL in 3D Environments using Human Feedback

DeepMind;OpenAI

Matthew Rahtz, Vikrant Varma, Ramana Kumar, Zachary Kenton, Shane Legg, Jan Leike

摘要:

工程师在培训和部署期间应避免不安全行为。这通常需要模拟器和不安全行为的程序规范。不幸的是,模拟器并不总是可用的,并且对于许多现实世界的任务来说,程序化地指定约束可能是困难的或不可能的。最近引入的技术ReQueST旨在通过从安全的人类轨迹中学习环境的神经模拟器来解决这个问题,然后使用学习的模拟器从人类反馈中有效地学习奖励模型。然而,目前还不清楚这种方法在复杂的3D环境中是否可行,并从真实的人类中获得反馈-是否可以实现足够的基于像素的神经模拟器质量,以及人类数据要求是否在数量和质量方面都是可行的。在本文中,我们回答这个问题是肯定的,使用ReQueST训练代理执行3D第一人称对象收集任务,完全使用来自人类承包商的数据。我们表明,由此产生的代理表现出一个数量级减少不安全的行为相比,标准的强化学习。

英文摘要:

Agents should avoid unsafe behaviour during both training and deployment. This typically requires a simulator and a procedural specification of unsafe behaviour. Unfortunately, a simulator is not always available, and procedurally specifying constraints can be difficult or impossible for many real-world tasks. A recently introduced technique, ReQueST, aims to solve this problem by learning a neural simulator of the environment from safe human trajectories, then using the learned simulator to efficiently learn a reward model from human feedback. However, it is yet unknown whether this approach is feasible in complex 3D environments with feedback obtained from real humans - whether sufficient pixel-based neural simulator quality can be achieved, and whether the human data requirements are viable in terms of both quantity and quality. In this paper we answer this question in the affirmative, using ReQueST to train an agent to perform a 3D first-person object collection task using data entirely from human contractors. We show that the resulting agent exhibits an order of magnitude reduction in unsafe behaviour compared to standard reinforcement learning.

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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