Nanjangud C. Narendra

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The dynamic nature of the Internet poses various challenges to the successful execution of composite Web services. Failures are samples of these challenges. It needs to be addressed for the smooth progress of Web service composition. Unfortunately, the de facto standard for modeling composition namely BPEL is not equipped with mechanisms that let Web(More)
Business contracts tend to be complex. In current practice, contracts are often designed by hand and adopted by their participants after, at best, a manual analysis. This paper motivates and formalizes two aspects of contract correctness from the perspective of the preferences of the agents participating in them. A contract is safe for a participant if(More)
SOA-based solutions are typically modeled as business processes composed of loosely coupled services. Such an approach promises the flexibility to more easily customize the solution functionality in line with constantly changing customer requirements. The research issue that we address in this paper, therefore, is how to best accomplish this customization.(More)
Existing web service composition and adaptation mechanisms are limited only to the scope of web service choreography in terms of web service selection/invocation vis-à-vis prespecified Service Level Agreement constraints. Such a scope hardly leaves ground for a participating service in a choreographed flow to re-adjust itself in terms of changed non(More)
With the increasing popularity of Web services and increasing complexity of satisfying needs of users, there has been a renewed interest in Web services composition. Composition addresses the case of a user request that cannot be satisfied by any available Web service, whereas a composite service obtained by integrating Web services might be used. Because(More)
The agile development method (ADM) is characterized by continuous feedback and change, and a software system developed using ADMevolves continuously through short iterations. Empirical studies on evolution of software following agile development method have been sparse. Most studies on software evolution have been performed on systems built using(More)
The emergence of the service-oriented computing paradigm has opened the possibility of using dynamic binding of application requirements to the resources needed to fulfill application tasks. Especially in pervasive computing that is characterized by disconnected operation and mobility, the process of using service specifications and dynamic binding becomes(More)