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ufal / neuralmonkey

An open-source tool for sequence learning in NLP built on TensorFlow.
BSD 3-Clause "New" or "Revised" License
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ChrF fails on division by zero #782

Open kasnerz opened 5 years ago

kasnerz commented 5 years ago

In case len(tokens) == 0 (i.e. the input sentence is empty) ChrF crashes with ZeroDivisionError on line 89:

https://github.com/ufal/neuralmonkey/blob/master/neuralmonkey/evaluators/chrf.py#L89

  File "/lnet/spec/work/people/kasner/neuralmonkey-ctc-decoder/neuralmonkey/bin/neuralmonkey/evaluators/chrf.py", line 89, in chr_p
    return precision / float(self.max_ord)
ZeroDivisionError: float division by zero