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We provide an overview of the current data management research issues in the context of the Semantic Web. The objective is to introduce the audience into the area of the Semantic Web, and to highlight the fact that the area provides many interesting research opportunities for the data management community. A new model, the Resource Description Framework (RDF), coupled with a new query language, called...
It has been pointed out recently by many researchers that it is difficult for languages such as OWL to incorporate time in their relations. As a result it is difficult to reason about the temporal ordering of events or about the temporal properties of relations that vary as a function of time. There are a number of methods that have been proposed in order to circumvent this difficulty. One technique...
In this paper, we propose knowledge-chunk based techniques for instance matching and mapping discovery of Semantic Web resources. Knowledge chunks provide a synthetic representation of semantic descriptions of individuals with the aim to improve matching efficiency also in presence of rich and articulated RDF/OWL resource descriptions for the domain. The main implementation choices in the HMatch 2...
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