Deals cases into calibration folds: agent cases and none cases are each put in ID order,
shuffled with a seeded generator, then dealt out in turn, so each fold holds both labels where it
can. With fewer cases than folds, each case is its own fold (and never fewer than two folds).
Deals cases into calibration folds:
agentcases andnonecases are each put in ID order, shuffled with a seeded generator, then dealt out in turn, so each fold holds both labels where it can. With fewer cases than folds, each case is its own fold (and never fewer than two folds).