Semantic Web Enabled Composition of Web Services

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dc.contributor.authorMedjahed, Brahimen
dc.contributor.committeechairBouguettaya, Athmanen
dc.contributor.committeememberRamakrishnan, Narenen
dc.contributor.committeememberChen, Ing-Rayen
dc.contributor.committeememberEltoweissy, Mohamed Y.en
dc.contributor.committeememberBarkhi, Rezaen
dc.contributor.departmentComputer Scienceen
dc.date.accessioned2014-03-14T20:11:04Zen
dc.date.adate2004-04-30en
dc.date.available2014-03-14T20:11:04Zen
dc.date.issued2004-01-19en
dc.date.rdate2004-04-30en
dc.date.sdate2004-04-27en
dc.description.abstractIn this dissertation, we present a novel approach for the automatic composition of Web services on the envisioned Semantic Web. Automatic service composition requires dealing with three major research thrusts: semantic description of Web services, composability of participant services, and generation of composite service descriptions. This dissertation deals with the aforementioned research issues. We first propose an ontology-based framework for organizing and describing semantic Web services. We introduce the concept of community to cluster Web services based on their domain of interest. Each community is defined as an instance of an ontology called community ontology. We then propose a composability model to check whether semantic Web services can be combined together, hence avoiding unexpected failures at run time. The model defines formal safeguards for meaningful composition through the use of composability rules. We also introduce the notions of composability degree and tau-composability to cater for partial and total composability. Based on the composability model, we propose a set of algorithms that automatically generate detailed descriptions of composite services from high-level specifications of composition requests. We introduce a Quality of Composition (QoC) model to assess the quality of the generated composite services. The techniques presented in this dissertation are implemented in WebDG, a prototype for accessing e-government Web services. Finally, we conduct an extensive performance study (analytical and experimental) of the proposed composition algorithms.en
dc.description.degreePh. D.en
dc.identifier.otheretd-04272004-171215en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04272004-171215/en
dc.identifier.urihttp://hdl.handle.net/10919/27364en
dc.publisherVirginia Techen
dc.relation.haspartmedjahed.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectWeb Serviceen
dc.subjectOntologyen
dc.subjectService Compositionen
dc.subjectSemantic Weben
dc.titleSemantic Web Enabled Composition of Web Servicesen
dc.typeDissertationen
thesis.degree.disciplineComputer Scienceen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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