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arXiv 1709.06709cs.LG
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针对学习率的存储器的在线学习

Online Learning of a Memory for Learning Rates

MPI-IS(马克斯·普朗克智能系统研究所);University of Washington(华盛顿大学);USC(南加利福尼亚大学)

Franziska Meier, Daniel Kappler, Stefan Schaal

摘要:

机器人学会学习的希望在于希望通过提取一些关于学习过程本身的信息,我们可以加快后续类似的学习任务。在这里,我们介绍了一个计算效率高的在线元学习算法,建立和优化记忆模型的最佳学习率景观从以前观察到的梯度行为。在执行特定于任务的优化时,该学习率的记忆预测如何缩放当前观察到的梯度。在应用梯度缩放后,我们的元学习器根据观察到的预测效果更新其内部内存。我们的元学习器可以与任何基于梯度的优化器相结合,动态学习,并可以转移到新的优化任务。在我们的评估中,我们表明,我们的元学习算法加快学习MNIST分类和各种学习控制任务,无论是在批量或在线学习设置。

英文摘要:

The promise of learning to learn for robotics rests on the hope that by extracting some information about the learning process itself we can speed up subsequent similar learning tasks. Here, we introduce a computationally efficient online meta-learning algorithm that builds and optimizes a memory model of the optimal learning rate landscape from previously observed gradient behaviors. While performing task specific optimization, this memory of learning rates predicts how to scale currently observed gradients. After applying the gradient scaling our meta-learner updates its internal memory based on the observed effect its prediction had. Our meta-learner can be combined with any gradient-based optimizer, learns on the fly and can be transferred to new optimization tasks. In our evaluations we show that our meta-learning algorithm speeds up learning of MNIST classification and a variety of learning control tasks, either in batch or online learning settings.

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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