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A Dynamic QoS-Aware Semantic Web Service Composition Algorithm

  • Pablo Rodriguez-Mier
  • Manuel Mucientes
  • Manuel Lama
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7636)

Abstract

The aim of this work is to present a dynamic QoS-aware semantic web service composition algorithm that finds the minimal solution graph that satisfies the composition request considering multiple QoS criteria and semantic input-output message structure matching restrictions. Our proposal starts computing an initial solution by selecting only those services from the dataset that are relevant to the user request and meet the semantic restrictions. Then, an optimal QoS-aware composition is calculated using Dijkstra shortest path algorithm. Once the solution is obtained, the number of services is minimized using the optimal aggregated QoS value calculated in the previous step as a bound to prune the state space search. Moreover, a set of extensive experiments with five different datasets from the Web Service Challenge 2009-2010 is presented to prove the efficiency of our proposal.

Keywords

Automatic composition Shortest Path QoS optimization Semantic Web Services 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Pablo Rodriguez-Mier
    • 1
  • Manuel Mucientes
    • 1
  • Manuel Lama
    • 1
  1. 1.Centro de Investigación en Tecnoloxías da Información (CITIUS)Universidade de Santiago de CompostelaSpain

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