机器学习(5)之牛顿算法
http://www.cnblogs.com/rcfeng/p/3971922.html
机器学习(4)之Logistic回归
http://www.cnblogs.com/rcfeng/p/3967445.html
机器学习(3)之最小二乘法的概率解释与局部加权回归
http://www.cnblogs.com/rcfeng/p/3965490.html
机器学习(2)之正规方程组
http://www.cnblogs.com/rcfeng/p/3961800.html
http://www.cnblogs.com/rcfeng/p/3958926.html
机器学习(1)之梯度下降(gradient descent)
