maxframe.tensor.special.log_expit#

maxframe.tensor.special.log_expit(x, out=None)[source]#

Logarithm of the logistic sigmoid function.

The SciPy implementation of the logistic sigmoid function is scipy.special.expit, so this function is called log_expit.

The function is mathematically equivalent to log(expit(x)), but is formulated to avoid loss of precision for inputs with large (positive or negative) magnitude.

Parameters:

  • x (array_like) – The values to apply log_expit to element-wise.

  • out (ndarray, optional) – Optional output array for the function results

Returns:

out – The computed values, an ndarray of the same shape as x.

Return type:

scalar or ndarray

See also

expit

Notes

As a ufunc, log_expit takes a number of optional keyword arguments. For more information see ufuncs