CPN-TWS: A Coloured Petri-Net Approach for Transactional-QoS Driven Web Service Composition
DeweyProgrammation, logiciels, organisation des données
Sujetweb service composition; modelling; web service selection; coloured Petri nets; Web services; Quality of services; automatic transactional composition
Journal issueInternational Journal of Web and Grid Services
MetadataShow full item record
El Haddad, JOYCE
Abstract (EN)In this article, we address the issue of selecting and composing Web Services (WSs) considering functional and Quality of Service (QoS) requirements combined with transactional properties. We formalize the WS functional, QoS, and transactional properties as well as the WS Composition problem. We have extended Colored Petri Net (CPN) formalism to incorporate transactional WSs properties. We present and prove a CPN-TWS selection algorithm that satisfies the user query functional conditions expressed as input and output attributes, QoS requirements represented by weights over criteria and,transactional properties expressed as a risk level. The result of our algorithm is a CPN corresponding to a Transactional Composite WS whose WS components locally minimize the QoS. Experimental results are presented.
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