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深度学习入门 : 基于Python的理论与实现
book

深度学习入门 : 基于Python的理论与实现

by 斋藤康毅
July 2018
Intermediate to advanced
310 pages
8h 21m
Chinese
Posts & Telecom Press
Content preview from 深度学习入门 : 基于Python的理论与实现
6章 与学习相关的技巧
200
这样就能缩小到合适的超参数的存在范围,然后在某个阶段,选择一个最终
的超参数的值。
6.6
小结
本章我们介绍了神经网络的学习中的几个重要技巧。参数的更新方法、
权重初始值的赋值方法、
Batch
Normalization
Dropout
等,这些都是现代
神经网络中不可或缺的技术。另外,这里介绍的技巧,在最先进的深度学习
中也被频繁使用。
本章所学的内容
参数的更新方法,除了SGD 外,还 MomentumAdaGrad
Adam 等方法。
权重初始值的赋值方法对进行正确的学习非常重要。
作为权重初始值,Xavier 初始值、He 初始值等比较有效。
通过使用 Batch Normalization,可以加速学习,并且对初始值变得
健壮。
抑制过拟合的正则化技术有权值衰减、Dropout 等。
逐渐缩小“好值”存在的范围是搜索超参数的一个有效方法。
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Publisher Resources

ISBN: 9787115485588