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Optimal Selection of Web Services for Composition Based on Interface-Matching and Weighted Multistage Graph

This paper first presents a 3-layer organization model and an evaluation model for services composition. Then it presents an approach for selecting global optimal execution plan of Web services composition, which is based on weighted multistage graph and fully considering interface-matching between Web services. Based on this approach, we can select the optimal execution plan dynamically by Dynamic Programming, Integer Programming, Genetic Algorithm or Immune Algorithm, which can solve the problem efficiently and make the selection more correct.