Automatic composition of information-providing web services based on query rewriting  

作　　者：ZHAO WenFeng LIU ChuanChang CHEN JunLiang 

机构地区：[1]State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《Science China(Information Sciences)》2012年第11期2428-2444,共17页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant No. 60432010);National Grand Fundamental Research Program of China (Grant Nos. 2011CB302506,2007CB307103)

摘　　要：Compared with normal web services, information-providing services have unique features that have seldom been considered in existing research on the automatic composition of web services. In this paper, we present a simple, yet well-formed, semantic-based capability model for information-providing web services, which can express such features as not modifying the world state and not requiring all input/output parameters to be supplemented with class information as semantics. We then present a corresponding automatic composition method derived from a query rewriting algorithm, MiniCon, used in the data integration field. This method adequately utilizes previous features, enables primitive semantic reasoning, and can generate executable BPEL scripts automatically. Performance of the method is complementary to traditional search-based ones. Experi- ments on a typical type of problem show that the method is usable in practice.Compared with normal web services, information-providing services have unique features that have seldom been considered in existing research on the automatic composition of web services. In this paper, we present a simple, yet well-formed, semantic-based capability model for information-providing web services, which can express such features as not modifying the world state and not requiring all input/output parameters to be supplemented with class information as semantics. We then present a corresponding automatic composition method derived from a query rewriting algorithm, MiniCon, used in the data integration field. This method adequately utilizes previous features, enables primitive semantic reasoning, and can generate executable BPEL scripts automatically. Performance of the method is complementary to traditional search-based ones. Experi- ments on a typical type of problem show that the method is usable in practice.

关 键 词：web services automatic composition query rewriting data integration ONTOLOGY semantic web 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] G252[自动化与计算机技术—计算机科学与技术]