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您好!读了您的文章,有个地方没有弄明白,关于文章中阈值选择的方法您是通过训练出α然后与原输入或其均值的乘积作为阈值,这样的理论依据是什么呢?或者说这种阈值的选择方式在当前block中存在何种目标函数吗?期待您的回复
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您好, 1、这样做的出发点在于:对于软阈值函数,如果阈值太大,那么输出就全部为零了;在软阈值函数中,阈值还必须是正数;采用这种阈值设置方式,是为了让阈值为正,而且不要太大,不要超出合理的范围。 2、这种阈值的选择方式在当前block中没有目标函数。 3、另外我自己的一些感想是,在神经网络里,这些特征都没有明确的物理意义,所以也很难说明阈值的物理意义。
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好的,十分感谢!
不客气哈,祝科研顺利!
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您好!读了您的文章,有个地方没有弄明白,关于文章中阈值选择的方法您是通过训练出α然后与原输入或其均值的乘积作为阈值,这样的理论依据是什么呢?或者说这种阈值的选择方式在当前block中存在何种目标函数吗?期待您的回复
The text was updated successfully, but these errors were encountered: