Create cross-classified grouped folds

Holds out levels from every declared grouping dimension simultaneously. The assessment set is the intersection of held-out levels; the analysis set excludes every held-out level. Rows combining held-out and retained levels form a buffer and are deliberately used in neither set.

Usage

crossed_grouped_folds(
  data,
  groups = c("participant_id", "item_id"),
  v = 5L,
  seed = 1L
)

Arguments

data

Data frame.

groups

Two or more crossed grouping columns.

v

Number of folds.

seed

Random seed.

Value

An `eye_crossed_grouped_folds` object.