Whether the parallel regression assumption is imposed in an ordinal regression model.
Details
This parameter is used by ordinal regression models specified by
parsnip::ordinal_reg(), for example with the "clm", "vglm", or
"ordinalNet" engines. It controls whether the regression coefficients are
shared across all ordinal thresholds (e.g. proportional odds in
logit-linked models) or allowed to vary (generalized ordered logit). TRUE
makes all effects parallel, FALSE makes all effects nominal or
category-specific.
