Manolis Gergatsoulis, Pantelis Lilis
RDF has been proposed by W3C as a metadata model and language for
representing information about resources in WWW. In this paper we
introduce Multidimensional RDF (or MRDF), as an
extension of RDF, suitable for representing context-dependent RDF
data. In MRDF we have a set of dimensions whose values define
different contexts (or worlds) under which different parts of an
RDF graph may hold. We define the semantics of MRDF in terms of
the semantics of RDF. Additionally, we propose appropriate
extensions, suitable for representing MRDF graphs in triples
notation and RDF/XML syntax. Finally, we demonstrate how an MRDF
graph, embodying a single time dimension, can be used to model the
history of a conventional RDF graph.
RDF databases, RDF model, Semantic Web, versioning.