daily machine learning

product-over-a-large-number

Published: 周日 26 四月 2020

By svtter

当我们计算多个大数的乘积时，可能造成数值上溢或者下溢。此时，我们需要将数值的log值相加，而不是计算数值的乘积。这是因为：

$$ log(a) + log(b) = log(ab)$$

这种计算，常见于条件概率形成的乘积链条。

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