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Log Cosh Error

Log Cosh Error

Log Cosh Error¶

The equation for Log Cosh Error is:

$L_{LC} = \log(\cosh(\hat{y} - y))$

We calculate the Gradient:

$G_{LC} = \tanh(\hat{y} - y)$

We also need to calculate the Hessian:

$H_{LC} = \frac{1}{\cosh^{2}(\hat{y} - y)}$