Machine Learning Notes ——Linear Regression
来源:互联网 发布:阿里云服务器安装禅道 编辑:程序博客网 时间:2024/05/28 23:09
Linear Regression with One Variable
Cost function
Gradient descent
Linear Regression with multiple variables
Gradient descent for multiple variables
Feature Scaling
Xi = ( Xi - Avg) / (Max - Min)
Learning rate
If a is too small: slow convergence.
If a is too large: J(θ) may not decrease on every iteration; may not converge.
Normal equation
X *θ= Y
XTX*θ= XTY
(XTX)-1(XTX)*θ= (XTX)-1XTY
θ= (XTX)-1XTY
Normal equation and non-invertibility
•Redundant features (linearly dependent).
E.g. X1 = size in feet2
X2 = size in m2
•Too many features (e.g. m<=n ).
Delete some features, or use regularization. 0 0
- Machine Learning Notes ——Linear Regression
- Machine Learning Notes - Linear Regression
- Machine Learning—Linear Regression
- 【machine learning】linear regression
- Titanic: Machine Learning from Disaster——Linear regression
- stanford machine learning, linear regression
- Machine Learning #Lab1# Linear Regression
- Machine Learning - Regularized Linear Regression
- Machine Learning Notes - Logistic Regression
- Andrew NG 《machine learning》week 2,class2 —Multivariaze Linear Regression
- Stanford Machine Learning: (1). Linear Regression
- Machine Learning:Linear Regression With One Variable
- Machine Learning:Linear Regression With Multiple Variables
- Andrew Ng Machine Learning 专题【Linear Regression】
- Machine Learning - Linear Regression with One Variable
- Machine Learning - Linear Regression with Multiple Variables
- NOTE: Coursera-Machine learning-linear regression
- Programming Exercise 1: Linear Regression Machine Learning
- cocos2d-x学习日志(16) --富文本
- 布隆过滤器
- 深入理解C语言-06-逻辑控制
- 《算法概论》的思维导图
- Eclipse部署Java Web项目到Tomcat出错
- Machine Learning Notes ——Linear Regression
- 静态图练习:图书管理系统
- 用一句位运算判断两个整数的大小并返回较大者
- 2014-03-12关于补码的问题
- HTML布局动态随窗口变化
- 通知Android有新文件生成,扫描数据库
- CSS reset & 闭合div 适用于HTML5
- Interview----用最快的方法计算 Fibonacci 数
- Seven Databases in Seven Weeks(一)