无监督学习，进行线性拟合梯度下降，选择thet-This first exercise will give you practice with linear regression. These exercises have been extensively tested with Matlab, but they should also work in Octave, which has been called a free version of Matlab. If you are usi

基于MATLAB软件的多元非线性回归和方差分析求解-Multi linear regression and variance analysis based on MATLAB software