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Chapter1 线性回归
Chapter1 线性回归

Chapter1 线性回归

问题定义:给定一个数据集,我们的目标是寻找模型的权重 \( \mathbf{w} \) 和偏置 \(b\)。

当我们的输入包含 \( d \) 个特征时,我们将预测结果 \( \hat{y} \),(通常使用“尖角”符号表示 \( y \) 的估计值)表示为:

$$ \hat{y} = w_1  x_1 + … + w_d  x_d + b $$

将所有特征放到向量 \( \mathbf{x} \in \mathbb{R}^d \) 中,并将所有权重放到向量 \( \mathbf{w} \in \mathbb{R}^d \) 中,通过点积可以表示模型: …

Render Math With Mathjax
Render Math With Mathjax

Mathjax

Math equations can be rendered using Mathjax syntax with AMS symbol support.

Optionally enable this on a per-page basis by adding mathjax: true to your frontmatter.

Then, use $$ ... $$ on a line by itself to render a block equation:

$$ | Pr_{x \leftarrow P_{1}} [A(x) = 1] - Pr_{x \leftarrow …

Markdown Syntax
Markdown Syntax

Paragraph

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