edit_distance.py 文件源码

def compute_cer(str_pred, str_true, normalize=True):
    """Compute Character Error Rate.
    Args:
        str_pred (string): a sentence without spaces
        str_true (string): a sentence without spaces
        normalize (bool, optional): if True, divide by the length of str_true
    Returns:
        cer (float): Character Error Rate between str_true and str_pred
    """
    cer = lev.distance(str_pred, str_true)
    if normalize:
        cer /= len(list(str_true))
    return cer