BPEL has emerged as the de-facto standard for implementing processes based on web services while formal languages like Petri nets have been proposed as an “academic response” allowing for all kinds of analysis. Although languages such as BPEL and Petri nets can be used to describe service flows, they both tend to “overspecify” the process and this does not fit well with the autonomous nature of...

Current approaches to service composition range from industrial standards (like BPEL and OWL-S) to formal methods (like Petri nets and process algebras). In this paper, we survey several such approaches and compare them on the basis of a selected set of characteristics (like compensations, trust and performance). Our conclusion is that formal methods, including tool support, are ideal to assist...

Service-Oriented Architectures (SOA) allows software applications to interoperate in a new way in distributed environment. Currently, web services are the most widely adopted technology for implementation of SOA. However, they bring a number of challenges to development as well as to testing. Testing web service compositions is one of the major problems in SOA domain that is due to the unknown ...

With development of SOA, the complex problem can be solved by combining available individual services and ordering them to best suit user's requirements. Web services composition is widely used in business environment. With the features of inherent autonomy and heterogeneity for component web services, it is difficult to predict the behavior of the overall composite service. Therefore, transact...

Web services––Web-accessible programs and devices––are a key application area for the Semantic Web. With the proliferation of Web services and the evolution towards the Semantic Web comes the opportunity to automate various Web services tasks. Our objective is to enable markup and automated reasoning technology to describe, simulate, compose, test, and verify compositions of Web services. We ta...

BPEL is becoming the mainstream of service oriented software, there are many exception handling models of BPEL. Toward the problem that how to guarantee the correctness of these models, this paper presents a model checking correctness approach of CPN (Colored Petri Nets)model based on temporal property, describes the temporal property using CTL(Computer Tree Logic). Correctness checking is impl...

1 International Computer Science Institute, 1947 Center Street, Berkeley, CA 94704. [email protected]. 2 Knowledge Systems Laboratory, Dept. Computer Science, Stanford University CA 94305, [email protected] ABSTRACT Web services -Web-accessible programs and devices – are a key application area for the Semantic Web. With the proliferation of Web services and the evolution towards the...