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离线到在线的强化学习,具有高效的不受约束的微调
Jun Zheng1, Runda Jia2, Shaoning Liu1
1College of Information Science and Engineering, Northeastern University, Shenyang, 110819, China.
概括
本研究引入了一个高效的不受约束的微调框架,用于线下到线上强化学习. 该方法通过使离线数据集之外的彻底探索成为可能,从而提高政策绩效,从而实现更好的样本效率.
科学领域:
- 人工智能的人工智能
- 机器学习 机器学习
- 机器人技术 机器人技术 机器人技术
背景情况:
- 线下强化学习 (RL) 从固定的数据集学习,但受到数据质量和覆盖范围的限制.
- 线下到线上RL旨在将线下和线上学习结合起来,以提高样本效率.
- 由于分布式转移和保守的培训,现有的方法面临着适应在线学习的挑战.
研究的目的:
- 开发一个高效的不受约束的微调框架,用于线下到线上强化学习.
- 克服现有方法在适应在线环境和改进预先培训的政策方面的局限性.
- 为了提高采样效率和减轻价值函数估计中的偏差.
主要方法:
- 提出了一个高效的不受约束的微调框架,在政策更新期间消除了保守的约束.
- 杆动态表示学习以捕捉有意义的特征并加速微调.
- 使用层规范化来限制Q值并防止灾难性的分歧.
- 增加了价值网络的更新频率,以提高抽样效率和减少估计偏差.
主要成果:
- 与最先进的线下到线上RL算法相比,拟的框架显示出更高的性能.
- 在D4RL基准的各种任务中取得了显著的改进.
- 需要最小的在线交互才能超越现有方法.
结论:
- 高效的无约束微调框架有效地解决了线下到线上强化学习的挑战.
- 该方法可以进行彻底的探索,并通过高样本效率提高政策绩效.
- 这种方法为在现实世界应用中推进强化学习提供了一个有希望的方向.
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