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Efficient service description and modeling methodologies are essential for dynamic service composition to provide autonomous services for users in ubiquitous computing environments. In the authors' previous research, they proposed a 'U-service' ontology which is an abstract and structured concept for device operations in ubiquitous environments. One of the problems that they faced during the design process was that there are not enough standards to analyze the effectiveness of a u-service ontology. In this paper, they propose a quality evaluation model to facilitate the design process of a u-service ontology.
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