 Results have been presented which give correlation of up to 0.964 with human judgement at the corpus level, compared to BLEU's achievement of 0.817 on the same data set.At the sentence level, the maximum correlation with human judgement achieved was 0.403.As with BLEU, the basic unit of evaluation is the sentence, the algorithm first creates an "alignment" (see illustrations) between two sentences, the candidate translation string, and the reference translation string.