The“Graph Retrieving”Algorighem in Multi-pattern Unification

Multi-pattern unification,also called unification,is a high valuable subject.It can be applied in the domain of Question Answering System(QAS).This paper firstly proposes the definition of multi-pattern unification,and proves the quality of it.Then,this paper gives the algorithm of“graph retrieving”.The experiment results indicate that this al- gorithm is effective and can solve the problem of multi-pattern unification.In the end,this paper introduces the applica- tion of the algorithm in Question Answering System(QAS).