kissLife的博客

Supervised learning: 人主导的机器学习。Unsupervised learning: 机器自主的学习。Notationm: Number of training examplesx: “intput” / featuresy: “output” variable / “target” variable(x, y): one training example(y(i...

矩阵 & 向量定义矩阵运算矩阵、向量相乘矩阵、矩阵相乘矩阵属性单位矩阵（Identity Matrix）：逆矩阵(inverse matrix)：矩阵转置(transpose matrix):问题转化成矩阵求解一种估计方程：多种估计方程：...