arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.09450cs.LGstat.ML
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基于随机搜索的对抗性模仿学习

Adversarial Imitation Learning via Random Search

Chung-Ang University(韩国中央大学)

MyungJae Shin, Joongheon Kim

摘要:

开发能够执行具有挑战性的复杂任务的智能体是强化学习的目标。无模型强化学习被认为是一种可行的解决方案。然而,最先进的研究一直在开发越来越复杂的技术。这种日益增加的复杂性使得重建变得困难。此外,奖励依赖问题仍然存在。因此,从专家的演示中学习政策的模仿学习的研究开始受到关注。模仿学习直接根据专家的行为数据学习策略,而不需要环境提供明确的奖励信号。然而,模仿学习试图基于信任区域策略优化等深度强化学习来优化策略。因此,基于深度强化学习的模仿学习也带来了可复制性的危机。复杂无模型问题已经引起了广泛的关注。基于无导数优化的强化学习和策略的简化在动态复杂任务上获得了有竞争力的性能。简化的策略和无导数的方法使算法简单。研究演示的重新配置变得容易。在本文中,我们提出了一个模仿学习方法,利用简单的线性政策的导数自由优化。所提出的方法执行简单的随机搜索的参数空间的政策,并显示计算效率。实验结果表明,该模型在没有环境直接奖励信号的情况下,在MuJoCo运动任务上获得了较好的性能.

英文摘要:

Developing agents that can perform challenging complex tasks is the goal of reinforcement learning. The model-free reinforcement learning has been considered as a feasible solution. However, the state of the art research has been to develop increasingly complicated techniques. This increasing complexity makes the reconstruction difficult. Furthermore, the problem of reward dependency is still exists. As a result, research on imitation learning, which learns policy from a demonstration of experts, has begun to attract attention. Imitation learning directly learns policy based on data on the behavior of the experts without the explicit reward signal provided by the environment. However, imitation learning tries to optimize policies based on deep reinforcement learning such as trust region policy optimization. As a result, deep reinforcement learning based imitation learning also poses a crisis of reproducibility. The issue of complex model-free model has received considerable critical attention. A derivative-free optimization based reinforcement learning and the simplification on policies obtain competitive performance on the dynamic complex tasks. The simplified policies and derivative free methods make algorithm be simple. The reconfiguration of research demo becomes easy. In this paper, we propose an imitation learning method that takes advantage of the derivative-free optimization with simple linear policies. The proposed method performs simple random search in the parameter space of policies and shows computational efficiency. Experiments in this paper show that the proposed model, without a direct reward signal from the environment, obtains competitive performance on the MuJoCo locomotion tasks.

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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