Abstract
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.
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Keywords
- Resource Description Framework
- User Query
- Path Expression
- Resource Description Framework Graph
- Source Ontology
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Vdovjak, R., Barna, P., Houben, GJ. (2003). Designing a Federated Multimedia Information System on the Semantic Web. In: Eder, J., Missikoff, M. (eds) Advanced Information Systems Engineering. CAiSE 2003. Lecture Notes in Computer Science, vol 2681. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45017-3_25
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DOI: https://doi.org/10.1007/3-540-45017-3_25
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