A federated Web-based multimedia information system on one hand gathers its data from various Web sources, on the other hand offers the end-user a rich semantics describing its content and a user-friendly environment for expressing queries over its data. There are three essential ingredients to successfully deploy such a system. First, one needs a design methodology identifying different design phases and their underlying models which serve as a framework for the designer. Second, there must be a set of tools that are able to execute the design, i.e. they serve as the back-end of the information system instantiating the models with data coming from various Web sources. Third, there also must be an entry point for the end-user, where he is able to explore what the system can do for him and where he can formulate his queries. This paper is a follow-up of our previous work describing the Hera design methodology and contributes to all three issues above. In particular, it refines the existing methodology by presenting an explicit RDFS-based integration model and explains how the mediator uses this model to obtain query results. The issue of a user-friendly front-end is addressed by introducing our interface for browsing and querying RDFS-based ontologies. © Springer-Verlag Berlin Heidelberg 2003.
CITATION STYLE
Vdovjak, R., Barna, P., & Houben, G. J. (2003). Designing a federated multimedia information system on the semantic Web. Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2681, 357–373. https://doi.org/10.1007/3-540-45017-3_25
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