Octave（Matlab）机器学习基础算法 ====================== 最小二乘法 -- ~~~ x=[15,30,45,60,75,90,105,120,135,150,165,180,195,210,225,240,255,270]; y=[7,7.9,8.8,10,11,12.6,14,14.6,15.2,15.7,16.2,16.4,16.7,17,17.3,17.5,17.7,18.0]; p=polyfit(x,y,2) x2=0:300; y2=polyval(p,x2); plot(x,y,'o',x2,y2) ~~~