Posterior¶
Instances of Posterior are called by worker sampling
processes for evaluation of a joint posterior distribution.
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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.
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__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.
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likelihood¶ Get the likelihood object.
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prior¶ Get the prior object.
- likelihood – An instance of