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As web services become more prevalent, tools will be needed to help users find, filter and integrate these services. Composing existing services to obtain new functionality will prove to be essential for both business-to-business and business-to-consumer applications. The authors have developed a prototype that guides a user in the dynamic composition of web services. The semi-automatic process includes presenting matching services to the user at each step of a composition, filtering the possibilities by using semantic descriptions of the services. The generated composition is then directly executable through the WSDL grounding of the services. The authors tested the system by generating semantic descriptions for some of the common services available on the web such as translator, dictionary and map services.
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