Part.6_Linear_Algerba_Review(ML_Andrew.Ng.)

Last updated Aug 4, 2021 Edit Source

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• Math linear algebra

Tags: #Math #Math/LinearAlgebra

• Scalar: 标量, A physical quantity that is completely described by its magnitude.

• Vector有两种Index方式: 0-indexed & 1-indexed就是指第一个元素序号是0还是1

• 一个把数据带入回归方程的一个矩阵技巧

• 交换律: Commutative Property

• 结合律: Associative Property

• 单位矩阵: Identity Matrix 表示为$I$ : Denoted $I$

• 逆: Inverse

• 转置: Transpose