The non-decision-time bound a family already carries

NULL when the family has none, and NULL when the one it has is still PENDING, which is the state a family constructed outside frmtmb::frm() is in before the response has been seen.

Usage

ndt_bound_of(fam)

Arguments

fam

A frmtmb_family object, fitted or not.

Value

An object of class "frmtmb_eam_ndt_bound", or NULL.

Details

A settled bound is KEPT rather than re-derived, and that is what this is for. frmtmb::frm() runs family_finalize again on new rows for influence(), frm_simulate() and the prior-predictive path, so a bound re-derived from fewer rows would make a leave-one-out refit a refit of a DIFFERENT model. A family_finalize written against this seam therefore asks first and returns the family untouched when the answer is not NULL.

See also

ndt_bound(), ndt_bound_attach().

Examples

# a family built outside frm() has no settled bound yet
ndt_bound_of(wiener())
#> NULL
ndt_bound_of(wiener(max_ndt = 0.4))[["ub"]]
#> [1] 0.4