SciPy

scipy.special.expit

scipy.special.expit(x) = <ufunc 'expit'>

Expit ufunc for ndarrays.

The expit function, also known as the logistic function, is defined as expit(x) = 1/(1+exp(-x)). It is the inverse of the logit function.

New in version 0.10.0.

Parameters :

x : ndarray

The ndarray to apply expit to element-wise.

Returns :

out : ndarray

An ndarray of the same shape as x. Its entries are expit of the corresponding entry of x.

Notes

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

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