Question about Range of BLEU

Question

I read that range of BLEU is 0 to 1.(from "BLEU" page on wikipedia)

But i found some paper says like

"we achieve a significant gain of 5.0 BLEU points over non-attentional systems that already incorporate known techniques such as dropout"

Does "5.0 BLEU points" mean 0.5 BLEU?
or BLEU range is not 0 to 1 and actually exceed 1?

Franck Dernoncourt · Accepted Answer · 2016-01-26 23:29:38Z

3

The BLEU score is between 0 and 1, but is sometime expressed as a percentage, i.e. ranging from 0 to 100%.

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answered Dec 19, 2015 at 1:27

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