5001: Statistical Machine Learning I 4th class(20-9-22) 笔记
Linear Regression
regression and classification
x \ y | continuous | discrete |
---|---|---|
continuous | regression | classification |
discrete | regression | ???? |
Simple linear regression
Least-squared fitting
Minimize the least square error
这里的 residual,就是对于单个点和计算得到的线性回归函数的误差,也就是相同x值下的两个y的差值。
Point estimation of β0 and β1
置信区间,估计不考,省略
Multiple linear regression
Least-squared fitting
some other calculation and parameters are in the ppt 4&5 p14