11-731 Machine Translation: Homework 5 - Questions and Clarifications

Question

(1)Should POS of single words be considered as syntactic labels? Should we label them too?
(2)In parse trees, is ROOT considered a syntactic label?

Answer (1) Yes, you should label single words with their POS (2) No, the "ROOT" is not considered a real label, but no points will be taken off if you label these. - Alon

Question

In question (a)(i) asks to give the number of different "source" phrases. But, the label is only in the "target" side (i.e. English) side. Should we consider the label to be for both source and target sides?

Answer My intention all along has been that the syntactic labels that attach to phrases in this HW assignment are considered joint labels for both the source and target sides, even though they come from just the target (English) side. The label goes with the phrase-pair instance of the sentence-pair from which it was extracted. This can be viewed as projecting the syntactic label from the English side to the source side. This applies to all the questions asked in HW5. - Alon