utils.py 文件源码

def batched_wer(ref, hyp):
    ''' Computes mean WER 

    ref: list of references
    hyp: list of corresponding hypotheses

    '''
    assert len(ref) == len(hyp)

    wer = 0.
    for r,f in zip(ref, hyp):
        rate = editdistance.eval(r, f) / len(r)
        wer += rate

    return wer/len(ref)