def batch_keep_absolute_retrain__r2(X, y, model_generator, method_name, num_fcounts=11):
    """ Batch Keep Absolute (retrain)
    xlabel = "Fraction of features kept"
    ylabel = "R^2"
    transform = "identity"
    sort_order = 13
    """
    return __run_batch_abs_metric(measures.batch_keep_retrain, X, y, model_generator, method_name, sklearn.metrics.r2_score, num_fcounts)