IdentityLinkSpec.validate_likelihood_compatibility

static IdentityLinkSpec.validate_likelihood_compatibility(link, likelihood)

Raise if likelihood is incompatible with link.

The identity link is compatible with any likelihood because the additive decomposition does not depend on the distributional form. The log link requires LogNormal so that the counterfactual decomposition (exp(mu) - exp(mu - media)) is correct.

Parameters:

linkLinkFunction

The link function used by the model.

likelihoodPrior

The likelihood distribution prior.

Raises:

ValueError

If the combination is known to produce incorrect downstream decomposition or optimisation results.