5.7.2.6.1. scipy.special.entr¶

scipy.special.entr(x) = <ufunc 'entr'>¶

Elementwise function for computing entropy.

$$\begin{split}\text{entr}(x) = \begin{cases} - x \log(x) & x > 0 \\ 0 & x = 0 \\ -\infty & \text{otherwise} \end{cases}\end{split}$$

Parameters:	x : ndarray Input array.
Returns:	res : ndarray The value of the elementwise entropy function at the given points x.

See also

kl_div, rel_entr

Notes

This function is concave.

New in version 0.14.0.