KullbackLeiblerCrossEntropyConvexConj

class odl.functionals.default_functionals.KullbackLeiblerCrossEntropyConvexConj(*args, **kwargs)[source]

The convex conjugate of Kullback-Leibler Cross Entorpy functional.

Notes

The functional $F^*$ with prior $g>0$ is given by

$F^*(x) = \sum_i g_i \left(e^{x_i} - 1\right)$

KullbackLeiblerCrossEntropy : convex conjugate functional

__init__(space, prior=None)[source]

Initialize a new instance.

spaceDiscretizedSpace or TensorSpace: Domain of the functional.
priorspace element-like, optional: Depending on the context, the prior, target or data distribution. It is assumed to be nonnegative. Default: if None it is take as the one-element.