utils.py 文件源码

def sum_squared(X):
    """Compute norm of an array

    Parameters
    ----------
    X : array
        Data whose norm must be found

    Returns
    -------
    value : float
        Sum of squares of the input array X
    """
    X_flat = X.ravel(order='F' if np.isfortran(X) else 'C')
    return np.dot(X_flat, X_flat)