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# 广义线性回归 | ||
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## 1 普通线性模型 | ||
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  普通线性模型(`ordinary linear model`)可以用下式表示: | ||
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$$Y = {\beta}_0+{\beta}_1x_1+{\beta}_2x_2+…+{\beta}_{p-1}x_{p-1}+\epsilon$$ | ||
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  这里$\beta$是未知参数,$\epsilon$是误差项。普通线性模型主要有以下几点假设: | ||
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- 因变量$Y$和误差项$\epsilon$均服从正太分布。其中$\epsilon \sim N(0,{{\sigma }^{2}})$,$Y\sim N({{\theta }^{T}}x,{{\sigma }^{2}})$。 |