l2正则化python_回归分析_L2正则化(岭回归)【python实现】
样本\[x_i=(x_{i1};x_{i2}; ...; x_{im}) \, {函数值 y_i}\]每个样本有m个变量回归面\[f(x_i) = x_i^T \omega +b\]\(\omega = (\omega_1; \omega_2; ...; \omega_m)\)\[\hat x_i=(x_{i1};x_{i2}; ...; x_{im}; 1)\]\[\hat \omega = (...