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Automatic Dynamic Web Service Composition Using AND/OR Directed Graphs

Author

Listed:
  • Hajar Elmaghraoui

    (Mohammed V University in Rabat, Ecole Mohammadia d'Ingénieurs, Rabat, Morocco)

  • Laila Benhlima

    (Mohammed V University in Rabat, Ecole Mohammadia d'Ingénieurs, Rabat, Morocco)

  • Dalila Chiadmi

    (Mohammed V University in Rabat, Ecole Mohammadia d'Ingénieurs, Rabat, Morocco)

Abstract

In this article, the authors propose a dynamic web service composition approach based on representing the semantic relationship between web services using a weighted directed AND/OR graph. The nodes in this graph represent available services while the arcs represent the semantic input/output dependencies among them. The novelty of this work consists of constructing the graph and computing offline the shortest paths between each pair of its nodes to disconnect this tedious task from the composition query process. A set of dynamic optimization techniques has been included to reduce the size of the graph and thus improve the scalability and performance of this approach. In addition to the sequence and fork relations between services, this solution also supports the parallel relation. Furthermore, a recovery mechanism is integrated to ensure the continuity of the execution of the composition.

Suggested Citation

  • Hajar Elmaghraoui & Laila Benhlima & Dalila Chiadmi, 2019. "Automatic Dynamic Web Service Composition Using AND/OR Directed Graphs," International Journal of Web Services Research (IJWSR), IGI Global, vol. 16(3), pages 29-43, July.
    • Handle: RePEc:igg:jwsr00:v:16:y:2019:i:3:p:29-43
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