preprocessing.py 文件源码

def scale_by_max_value(X):
    """
    Scale each feature by its abs maximum value.

    Keyword arguments:
    X -- The feature vectors    
    """

    if verbose:
        print '\nScaling to the range [-1,1] ...'

    max_abs_scaler = preprocessing.MaxAbsScaler()
    return max_abs_scaler.fit_transform(X)