Abstract
With the emergence of service-oriented architecture web service and service composition technology have become gradually the important means of improving the agility, flexibility and availability of enterprise information system integration and implementation collaborative commerce among enterprises. Combining web service with workflow, the paper analyses workflow-oriented, cross-organization and distributed dynamic service composition mechanism, then explores the general model of implementing hierarchy composition planning of dynamic web services based on workflow model. Also, considering multi-layers and multi-available services a novel search algorithm of optimized service composition path based on path cost and service preference is designed and illustrated by an example.
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