quspin.tools.misc.KL_div

quspin.tools.misc.KL_div(p1, p2)[source]

Calculates Kullback-Leibler divergence of two discrete probability distributions.

\[\mathrm{KL}(p_1||p_2) = \sum_n p_1(n)\log\frac{p_1(n)}{p_2(n)}\]

Parameters:

p1numpy.ndarray

Dscrete probability distribution.

p2numpy.ndarray

Discrete probability distribution.

Returns:

numpy.ndarray

Kullback-Leibler divergence of p1 and p2.