Commit 7a6052d7 authored by Reimar Leike's avatar Reimar Leike
Browse files

more documentation

parent 6dfed616
......@@ -98,20 +98,22 @@ class QuadraticFormOperator(EnergyOperator):
class VariableCovarianceGaussianEnergy(EnergyOperator):
"""Computes a negative-log Gaussian with unknown covariance.
"""Computes the negative log pdf of a Gaussian with unknown covariance.
Represents up to constants in :math:`s`:
The covariance is assumed to be diagonal.
.. math ::
E(f) = - \\log G(s, D) = 0.5 (s)^\\dagger D^{-1} (s) + 0.5 tr log(D),
E(s,D) = - \\log G(s, D) = 0.5 (s)^\\dagger D^{-1} (s) + 0.5 tr log(D),
an information energy for a Gaussian distribution with residual s and
diagonal covariance D.
The domain of this energy will be a MultiDomain with two keys,
the target will be the scalar domain.
domain : Domain, DomainTuple, tuple of Domain
Operator domain.
domain of the residual and domain of the covariance diagonal.
residual : key
Residual key of the Gaussian.
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