Question terminology and representation for question type classification
Noriko Tomuro · 2002
Question terminology is a set of terms which appear in keywords, idioms and xed expressions commonly observed in questions.This paper investigates ways to automatically extract question terminology from a corpus of questions and represent them for the purpose of classifying by question type.Our key interest is to see whether or not semantic features can enhance the representation of strongly lexical nature of question sentences.We compare two feature sets: one with lexical features only, and another with a mixture of lexical and semantic features.For evaluation, we measure the classication accuracy made by t wo m a c hine learning algorithms, C5.0 and PEBLS, by using a procedure called domain cross-validation, which eectively measures the domain transferability of features.