Keep Absolute (mask)
    xlabel = "Max fraction of features kept"
    ylabel = "R^2"
    transform = "identity"
    sort_order = 6

def keep_absolute_mask__r2(X, y, model_generator, method_name, num_fcounts=11):
    """ Keep Absolute (mask)
    xlabel = "Max fraction of features kept"
    ylabel = "R^2"
    transform = "identity"
    sort_order = 6
    """
    return __run_measure(measures.keep_mask, X, y, model_generator, method_name, 0, num_fcounts, sklearn.metrics.r2_score)