metric.py 文件源码

def specificity(Ntn, Nfp, eps=numpy.spacing(1)):
    """Specificity

    Wikipedia entry https://en.wikipedia.org/wiki/Sensitivity_and_specificity

    Parameters
    ----------
    Ntn : int >= 0
        Number of true negatives

    Nfp : int >= 0
        Number of false positives

    eps : float
        eps
        (Default value=numpy.spacing(1))

    Returns
    -------
    specificity: float
        Specificity

    """

    return float(Ntn / (Ntn + Nfp + eps))