File descriptions features_train.csv : Contains Features of Train Data target_train.csv : Contains Classes of Train Data features_test.csv : Contains Features of Test Data Each row in the ‘features_train’ and ‘features_test’ belongs to a ‘measurement’ and each column represents a ‘feature’ . For each row in the ‘features_train’ you have a corresponding class label in ‘target_train’ . You can consider the row-numbers as keys.