回归的矩阵表达形式
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回归的矩阵表达形式 [2023/04/10 10:53] – 创建 yunyuqu | 回归的矩阵表达形式 [2024/04/14 03:41] (当前版本) – zwz | ||
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====回归的矩阵表达形式==== | ====回归的矩阵表达形式==== | ||
+ | ==== The matrix expression of the regression ==== | ||
+ | |||
*** 1.公式** | *** 1.公式** | ||
* {{: | * {{: | ||
行 11: | 行 13: | ||
* 公式: | * 公式: | ||
* {{: | * {{: | ||
+ | * | ||
* **转置**:对应的行列互换。 | * **转置**:对应的行列互换。 | ||
+ | |||
+ | ---- | ||
+ | *** 1.Formulas** | ||
+ | * {{: | ||
+ | |||
+ | ---- | ||
+ | *** 2.Review of matrix operations** | ||
+ | * **Addition and subtraction**:Add or subtract the values of the corresponding row and column coordinates | ||
+ | * **Subtraction**:Suppose that there are matrices X with dimensions n × m, and matrices Y with dimensions l × k, then | ||
+ | * (1)Only when m = l is it feasible to multiply matrix X by matrix Y, and the resultant matrix XY exists; | ||
+ | * (2)Only when k = n is it feasible to multiply matrix Y by matrix X, and the resultant matrix YX exists. | ||
+ | * Formulas: | ||
+ | * {{: | ||
+ | * | ||
+ | * **Matrix transposition**:Interchange of corresponding rows and columns. |
回归的矩阵表达形式.1681124007.txt.gz · 最后更改: 2023/04/10 10:53 由 yunyuqu