1764 Task 1764: electricity (Learning Curve) 3 Learning Curve 151 class 13 crossvalidation https://api.openml.org//api_splits/get/1764/Task_1764_splits.arff 1 10 20 predictive_accuracy ARFF ActiveTestingSamples curves-medium curves-small curves127 curves3 curves4 LearningCurves study_2 study_34 study_37 under1m