... identification andcategorization of IMs (attribute values).2.2 Question answeringQuery intent understanding is analogous to ques-tion understanding for question answering (QA)systems. Many web ... chunking results (B7) are usedinstead of B6, the performance is not as good.Transition features In addition, it is interesting to see the importance of transition features in both models. Since ... semanticstructure of noun phrase queries, i.e., IHs, IMsand the semantic labels of IMs. In particular, weinvestigate the use of transition, lexical, semanticand syntactic features. The semantic...