Given a phrase pair bp = (e i , f a i ), where a i defines that the source phrase f a i is aligned to the target phrase e i , the traditional lexicalized reordering model computes the reordering count of bp in the orientation o based on the word alignments of boundary words.
the model collects bilingual phrases and distinguishes their orientations with respect to the previous bilingual phrase into three categories: Using the relative-frequency approach, the reordering probability regarding bp is For a parallel sentence pair, its reordering graph indicates all possible translation derivations consisting of the extracted bilingual phrases.