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Quality Driven Web Services Replication Using Directed Acyclic Graph Coding

  • An Liu
  • Qing Li
  • Liusheng Huang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6997)

Abstract

Web services cannot be always available as they are typically deployed in a dynamic environment. As an effective approach to improving Web services availability, replication has received much attention recently. How to design an optimal replication scheme with the best QoS, however, remains an open problem due to its inherent computational hardness. In this paper, we propose an efficient approach to designing a near-optimal replication scheme. We adopt directed acyclic graph (DAG) as the modeling tool for replication scheme and then utilize DAG coding for performance optimization. Simulation results show our approach can generate a near-optimal replication scheme with acceptable computation overheads.

Keywords

Genetic Algorithm Adjacency Matrix Direct Acyclic Graph Simple Additive Weighting Acyclic Digraph 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • An Liu
    • 1
    • 2
    • 3
  • Qing Li
    • 2
    • 3
  • Liusheng Huang
    • 1
    • 3
  1. 1.University of Science and Technology of ChinaHefeiChina
  2. 2.City University of Hong KongHong Kong, China
  3. 3.CityU-USTC Advanced Research InstituteSuzhouChina

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