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Web services composition has gained a considerable momentum as a means to create and streamline business-to-business collaborations within and across organizational boundaries. The composition approach proposed in this paper can enable user to generate a composite Web service with minimal execution price dynamically. After modeling Web services with rules and eliminating semantics conflicts among parameters of Web service models, we can compute a deduced network with inputs given by user. Based on the deduced network, a set of composition plans for every output can be obtained with a backward deduction approach. In order to get the composition plan which has the minimal execution price, all the output's composition plan sets should be joined by Cartesian product.
Date of Conference: 11-15 July 2005