Web Service Indexing for Efficient Retrieval and Composition

The success and widespread use of Web service technology is bound to the availability of tools for rapidly discovering services and for composing their operations. We present a system for service discovery and composition based on syntactic and semantic matching of the published service interfaces. The system relies on accurate preprocessing of the available services, that is, on the indexing time of the services' descriptions. The composition task is performed by index lookup and an efficient heuristic for graph traversing. The presented system is the VitaLab entry for the syntactic and semantic WS-challenge 2006