Builds a loo object that contains any pointwise criterion, acting as elpd for compatibility.

LOO currently has hardcoded expectations of elpd as part of loo objects so to use loo objects, we have to disguise other criterions as elpd.

Usage

custom_loo_object(pointwise_criterion, psis_object = NULL)

Arguments

pointwise_criterion

vector of criterion values for each observation

psis_object

brms:::.psis object for psis diagnostics

Value

a loo object, containing a criterion, disguised as elpd