Change Management of Long Term Composed Services

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dc.contributor.authorLiu, Xuminen
dc.contributor.committeechairBouguettaya, Athmanen
dc.contributor.committeecochairGracanin, Denisen
dc.contributor.committeememberLu, Chang-Tienen
dc.contributor.committeememberBohner, Shawn A.en
dc.contributor.committeememberBarkhi, Rezaen
dc.contributor.departmentComputer Scienceen
dc.date.accessioned2014-03-14T20:15:15Zen
dc.date.adate2009-09-09en
dc.date.available2014-03-14T20:15:15Zen
dc.date.issued2009-07-28en
dc.date.rdate2013-05-20en
dc.date.sdate2009-08-15en
dc.description.abstractWe propose a framework for managing changes in Long term Composed Services (LCSs). The key components of the proposed framework include a Web Service Change Management Language (SCML), change enactment, and change optimization. The SCML is a formal language to specify top-down changes. It is built upon a formal model which consists of a Web service ontology and a LCS schema. The Web service ontology gives a semantic description on the important features of a service, including functionality, quality, and context. The LCS schema gives a high-level overview of a LCS's key features. A top-down change is specified as the modification of a LCS schema in the first place. Change enactment is the process of reacting to a top-down change. It consists of two subcomponents, including change reaction and change verification. The change reaction component implements the proposed change operators by modifying a LCS schema and the membership of Web services. The change verification component ensures that the correctness of a LCS is maintained during the process of change reaction. We propose a set of algorithms for the processes of change reaction and verification. The change optimization component selects the Web services that participate in a LCS to ensure that the change has been reacted to in the best way. We propose a two-phase optimization process to select services using both service reputation and service quality. We present a change management system that implements the proposed approaches. We also conduct a set of simulations to assess the performance.en
dc.description.degreePh. D.en
dc.identifier.otheretd-08152009-121019en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08152009-121019/en
dc.identifier.urihttp://hdl.handle.net/10919/28672en
dc.publisherVirginia Techen
dc.relation.haspartdissertation.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectChange Managementen
dc.subjectTop-downen
dc.subjectOntologyen
dc.subjectLong term Composed Servicesen
dc.titleChange Management of Long Term Composed 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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