4001 Task 4001: pc1_req (Supervised Classification) 1 Supervised Classification 1167 DEFECT 1 crossvalidation https://api.openml.org/api_splits/get/4001/Task_4001_splits.arff 1 10 true predictive_accuracy ARFF mythbusting_1 study_107 study_15 study_20 study_7 under100k under1m