acceptability.py 文件源码

def calc_slor_scores(norm_lp_sub_scores: List[float],
                     lengths: List[int]) -> List[Union[None, float]]:
    r"""Calculate SLOR (Syntactic Log-Odds Ratio)
    .. math:
        \frac{%
            \log P_\text{model}\left(\xi\right)
                - \log P_\text{unigram}\left(\xi\right)
        }{%
            \text{length}\left(\xi\right)
        }
    >>> '{:.3f}'.format(calc_slor_scores([20.8746], [4])[0])
    '5.219'
    """

    results = []
    for norm_lp_sub_score, length in zip(norm_lp_sub_scores, lengths):
        if (norm_lp_sub_score is None) or length == 0:
            x = None
        else:
            x = norm_lp_sub_score / length
        results.append(x)
    return results