Abstract

The process of Web services composition at present is static and predetermined, which could not meet dynamic user requirements and change online environment. Aimed at this problem, we propose a dynamic optimization strategy for Web services composition using Scale-free Network with Partheno-Genetic algorithm based on Flow Tree (SNPGFT). In SNPGFT, the process of Web services composition would be described as a scale free based on flow tree which would be depth-first traversal, and Web services of sequential relationship would be treated with partheno-genetic algorithm to form a bran-new flow of composition. By means of experiments on SNPGFT and common partheno-genetic algorithm, we show that using SNPGFT can improve the effectiveness and feasibility of Web services composition.

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