Posterior
Instances of Posterior are called by worker sampling
processes for evaluation of a joint posterior distribution.
- class xpsi.Posterior.Posterior(likelihood, prior, **kwargs)[source]
The (joint) posterior distribution.
A callable instance is required by emcee (but is not required for nested sampling).
- Parameters:
likelihood – An instance of
Likelihood.prior – An instance of
Prior.
- __call__(p)[source]
Special method to make callable instances to feed to
emcee.- Returns:
The logarithm of the posterior density (up to a normalising constant), evaluated at
p.
- property likelihood
Get the likelihood object.
- property prior
Get the prior object.