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Automatic web services composition approaches aim at automatically composing services to satisfy users' request according to the information of users' input. As the number of web services is increasing, the performance of automatic service composition is faced with challenges. In this paper, we propose an approach based on backward chaining method to(More)
With the development of Internet and Service/Cloud computing, more and more underlying web services are horizontally distributed on geographically distance servers connected with Internet. Inspired by MapReduce, we design a system architecture and Preprune-Refine framework in this paper to handle these distributed web services. Extensive experiments show(More)
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