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METEOR
Monday, November 16th, 2009
The METEOR metric is designed to address some of the deficiencies inherent in the BLEU metric. The metric is based on the weighted harmonic mean of unigram precision and unigram recall. The metric was designed after research by Lavie (2004) into the significance of recall in evaluation metrics. Their research showed [...]
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NIST
Tuesday, April 28th, 2009
The NIST metric is based on the BLEU metric, but with some alterations. Where BLEU simply calculates n-gram precision adding equal weight to each one, NIST also calculates how informative a particular n-gram is. That is to say when a correct n-gram is found, the rarer that n-gram is, the more weight [...]
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BLEU
Sunday, March 29th, 2009
BLEU was one of the first metrics to report high correlation with human judgements of quality. The metric is currently one of the most popular in the field. The central idea behind the metric is that “the closer a machine translation is to a professional human translation, the better it is”.[1] The [...]
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