Uses the empirical probability distribution (puts mass \(1/n\) on each of the observations, or uses weights if specified) to estimate a marginal density.
LF_base; see that page for documentation on likelihood factors in general.
Only compatible with marginal likelihoods (no parent nodes). Only compatible with densities (no conditional means).
type argument will be ignored if specified.
character, the name of the factor. Should match a node name in the nodes specified by
Not currently used.