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Expose use_effective_order flag for bleu score computation for shorter sentences #1123

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Expose use_effective_order flag for bleu score computation for shorter sentences #1123

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5 changes: 3 additions & 2 deletions t5/evaluation/metrics.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,14 +45,15 @@
ModelOutputType = seqio.metrics.ModelOutputType


def bleu(targets, predictions, tokenizer="intl"):
def bleu(targets, predictions, tokenizer="intl", use_effective_order=False):
"""Computes BLEU score.

Args:
targets: list of strings or list of list of strings if multiple references
are present.
predictions: list of strings
tokenizer: tokenizer option for corpus_bleu
use_effective_order: whether to use effective order when computing BLEU.

Returns:
bleu_score across all targets and predictions
Expand All @@ -69,7 +70,7 @@ def bleu(targets, predictions, tokenizer="intl"):
force=False,
lowercase=False,
tokenize=tokenizer,
use_effective_order=False)
use_effective_order=use_effective_order)
return {"bleu": bleu_score.score}


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