New method for sentence similarity computing and its application in question answering system

Abstract

Sentence similarity computing plays an important role in machine question-answering systems,machine-translation systems,text categorization systems,etc.Aiming at a sentence similarity model based on key words,an improved method is put forward,including the extraction of keywords ,and the induction of synonyms in sentence similarity definition.And on this basis,a question answer system based on FAQ(Frequently Asked Question) is implemented.This system involves automatically searching for candidate question set,computing sentence similarity and returning the answer to the user.This system can also automatically update and maintain FAQ.Experiments' result shows that the new method has more accuracy than the others in matching questions of question answering system.