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As SOC and Web service technology become more widely used, large amounts of services need to be efficiently and effectively composed to meet complex businesses. In this paper, we proposed an approach to resolve the composition problem over large-scale services. We used an inverted table as index for a quick service discovery, and applied a service dependency graph (SDG) and an AND/OR graph as the...
Many automatic Web service composition algorithms based on AI planning techniques have been proposed. In this paper, we model the semantic Web service composition problem using a kind of simplified planning graph. It provides a unique search space, and can find a solution in polynomial time, but with possible redundant Web services.
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