scholarly journals Using Pi-calculus to Model Dynamic Web Services Composition Based on the Authority Model

2017 ◽  
Vol 22 (2) ◽  
pp. 111-123 ◽  
Author(s):  
Sok-Min Han ◽  
Un-Chol Pang ◽  
Hyok-Chol Choe ◽  
Chol-Jun Hwang
Keyword(s):  
Web Services ◽  
Web Services Composition ◽  
Services Composition ◽  
Dynamic Web ◽  
Pi Calculus

RDTA

2014 ◽  
Vol 5 (3) ◽  
pp. 42-67
Author(s):  
Fateh Latreche ◽  
Faiza Belala
Keyword(s):  
Web Services ◽  
Real Time ◽  
Formal Model ◽  
Timed Automata ◽  
Web Services Composition ◽  
Composite Service ◽  
The Real ◽  
Services Composition ◽  
Dynamic Web ◽  
Natural Way

Web services are very dynamic, they are all around us and we use them every day without even knowing it. In this paper, the authors define a formal model for dynamic Web services composition and they investigate how it can be used to specify and analyse backward recovery procedures, updating partner services in case of failure. First, they propose Recursive and Dynamic Timed Automata (RDTA) model, interpreted over composite service configurations, which provide a natural way to design stateful and dynamic Web services. Then, the authors define the concurrent semantics of this timed automata extension in terms of real-time rewrite theories. Analysis of the model is carried out in the Real-Time Maude system, based on checking relevant properties.

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