机器学习笔记之学习速率
来源:互联网 发布:linux cat vi 编辑:程序博客网 时间:2024/06/05 03:40
GradientDescent in Practice II - Learning Rate
Note: [5:20 - the x -axis label in theright graph should be θ rather than No. of iterations ]
Debugginggradient descent. Make a plot with number of iterations onthe x-axis. Now plot the cost function, J(θ) over the number of iterations ofgradient descent. If J(θ) ever increases, then you probably need to decrease α.
Automatic convergence test. Declareconvergence if J(θ) decreases by less than E in one iteration, where E is somesmall value such as 10−3. However in practice it's difficult to choose thisthreshold value.
It has been proven that if learning rate α is sufficiently small, then J(θ) will decreaseon every iteration.
To summarize:
If α is toosmall: slow convergence.
If α is toolarge: may not decrease on every iteration and thus may not converge.
- 机器学习笔记之学习速率
- OTN学习笔记-帧速率
- 机器学习笔记之什么是机器学习
- 学习速率
- 机器学习学习笔记之rf模型
- 《机器学习》学习笔记之决策树
- 机器学习之TensorFlow框架学习笔记
- 【机器学习之学习笔记】线性回归
- 机器学习笔记之监督学习
- 机器学习笔记之无监督学习
- 机器学习之梯度下降学习笔记
- 机器学习学习笔记之二:决策树
- 机器学习之决策树学习笔记
- 机器学中如何选择学习速率,正则项系数
- 机器学习笔记(一)机器学习入门之旅
- 【机器学习】自学笔记绪论---机器学习进阶之路
- 《机器学习》学习笔记
- 机器学习----学习笔记
- 8.IO包概述并显示文件信息
- java中class文件的意义在哪里
- 1.Px4控制算法综述
- jqery和js如何判断checkbox是否选中
- JSP 表单处理
- 机器学习笔记之学习速率
- eclipse有红叉,查看markers发现Target runtime Apache Tomcat 7.0(8.0,9.0) is not defined
- idea的快捷键与其他快捷键发生冲突的解决办法
- 7,20整理设计模式
- JAVA学习札记02
- 最常用的15个JS正则表达式(前端表单验证)
- Luogu 01迷宫
- Socket和ServerSocket
- memcpy