In this section, we focus specifically Algorithm 1 Prediction algorithm for following constituents It should be noted that using these trees in T2S translation models is not trivial because each estimated syntactic constituent should be treated as an aggregated entity representing all possibilities of subtrees rooted in such a constituent.
there are two problems: the possibility of reordering an as-of-yet unseen syntactic constituent into the middle of the translated sentence, and the calculation of language model probabilities considering syntactic constituent tags.