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- W124865498 abstract "The paper represents current achievements of an ongoing research that aims to develop a formal approach supporting an auto- matic selection of a Web service sought by a requestor. The approach is based on the matching the requestor's requirements for a service against the service description oered by the provider. We focus on the checking behavioral compatibility between operation contracts specifying pre-conditions and eects of required and provided operations. Graph transformation rules with positive application conditions are pro- posed as a visual formal notation for contracts. The desired dependence between requestor and provider contracts is determined by the semantic compatibility relation and syntactic matching procedure that is sound w.r.t. this relation. The Web Services technology adopts the WWW for application to application communication that, in its turn, enables applications to interact with each other either to use services delivering by other business entities or to provide complex services based on their own capabilities. The ability of applications to discover automatically useful services and select those of them that can be safely inte- grated with the existing components leads Web services to their full potential. Much work has been already done: The interface of the provided service can be specified in the Web Service Description language (WSDL). This specification as well as additional descriptive information about the delivered service is placed by a provider into a UDDI-registry being an information repository. A service requestor can query the registry to get descriptions of services delivering facilities for specific business domains. While WSDL and UDDI (partially) support the dynamic discovery of ser- vices, an automatic selection of candidates which can be adequately integrated into the requestor application is not captured by the Web services standards. The service descriptions obtained from the UDDI-registry is manually analyzed by a developer of the requestor application. Our objective is to enable tech- niques allowing automation of the selection process. The present achievements regarding this global goal are discussed in the paper. ? Research funded in part by European Community's Human Potential Programme under contract HPRN-CT-2002-00275, (SegraVis)." @default.
- W124865498 created "2016-06-24" @default.
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- W124865498 date "2005-01-01" @default.
- W124865498 modified "2023-09-30" @default.
- W124865498 title "Application of Graph Transformation for Automating Web Service Discovery" @default.
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