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1、enable_initial_guess这个大概是啥意思? 2、gbdt为啥要加一个bias呢?
The text was updated successfully, but these errors were encountered:
c00h00g 你好,
GBDT是一个additive + boosting模型:
$F(x) = \sum_{i=0}^M{f_i(x)}$
其中$f_0(x)$是 initial guess。
2、gbdt为啥要加一个bias呢?
这里的bias即一个initial guess,即 $f_0(x) = bias$,是一个const function。
1、enable_initial_guess这个大概是啥意思?
考虑到提供一个非const function作为initial guess,所以提供这个选项。
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thx,看起来是初始化的意思,我理解成bias了
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1、enable_initial_guess这个大概是啥意思?
2、gbdt为啥要加一个bias呢?
The text was updated successfully, but these errors were encountered: