... used to evaluate the quality of a phrase and a phrase pair. Ideally, a perfect combina-tion of feature functions divides the correct and in-correct candidate phrase pairs within a parallel sen-tence ... 0.70Table 1: Phrase pair posterior distribution for the examplewell, for instance, n-grams that are part of a para- phrase translation or metaphorical expression. Togive an example, the unigram ... same way. This fea-ture function quantitatively captures the goodness of phrases. During phrase pair ranking, it can helpto move upward phrases that can be aligned welland push downward phrases...