matlab 梯度下降 線性迴歸

代碼託管在github https://github.com/sofiathefirst/matlabdemo/tree/master/02Linear_regressin_demo   x=[-2:0.1:2]; y = 4*x; z=normrnd(0,0.6,1,41); y = y+z; w = -5; plot(x,y,'.') %hold on for i =[1:1000]    

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