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] – 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 13: | 行 15: | ||
| * | * | ||
| * **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.1681124023.txt.gz · 最后更改: 2023/04/10 10:53 由 yunyuqu