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Web services are widely used because of their features of interoperability,loose-coupled and platform independent. Web services composition is one of the hottest topics in service computing area. In this paper a method based on Petri net coverability problem is proposed to handle automatic service composition. First each service is translated into component of Petri net and the input/output places...
Existed Web logs are lack of semantics obviously. To improve the efficiency and accuracy of Web mining, a semantic Web log model - SWLM is presented, and two algorithms based on this model is given to cluster pages and users. Firstly, this method defines ontologies to interpret properties of Web log, then computing the semantic distances of log concepts. Based on the set of terms defined by ontology,...
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