The word posterior probability is then calculated by summing over all target sentences containing word e in a position which is Levenshtein-aligned to i: , where The confidence of word e then depends on the source sentence f J 1 as well as the target sentence e I 1 , because the whole target sentence is relevant for the Levenshtein alignment.
to the approaches presented in section 4, the phrase-based confidence measures do not not use the context information at the sentence level, but only at the phrase level.