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| author | Hui Lan <lanhui@zjnu.edu.cn> | 2019-04-11 09:30:10 +0800 |
|---|---|---|
| committer | Hui Lan <lanhui@zjnu.edu.cn> | 2019-04-11 09:30:10 +0800 |
| commit | 06e137479f5d1b1751351071794296f0cdadad1d (patch) | |
| tree | 6430e6d9a671cf89b89148f6a2ed550af0ffe379 /ai-slides.tex | |
| parent | 6eb711beb4a789d262fcd791b6a0bb1f19064fc1 (diff) | |
参数估计也是随机变量
Diffstat (limited to 'ai-slides.tex')
| -rw-r--r-- | ai-slides.tex | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/ai-slides.tex b/ai-slides.tex index cc38c42..32c53c3 100644 --- a/ai-slides.tex +++ b/ai-slides.tex @@ -543,7 +543,8 @@ Least squares line. $\hat{Y}=\hat{\beta}_0 + \hat{\beta}_1 X$. \includegraphics[width=0.99\textwidth]{ISLR_Fig3_3.png} \end{center} -参数估计的标准错误(standard error)，$\mathrm{SE}(\hat{\beta})$。 +参数估计也是随机变量，在不同的训练集上有不同的参数估计。参数估计的标准 +错误(standard error) $\mathrm{SE}(\hat{\beta})$。 \begin{center} \includegraphics[width=0.99\textwidth]{ISLR_Eq3_8.png} |