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Semantic Web for the Working Ontologist by James Hendler, Dean Allemang

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CHAPTER 13 OWL Levels and Logic

This book is about modeling in the context of the Semantic Web—in particular, using the W3C languages RDF, RDFS, and OWL to build and distribute those models. The meaning of these models is given by the inferences that each of these languages defines for the models. RDFS provides rudimentary inferencing about types based on class membership and properties. OWL provides a wide array of more advanced modeling features to describe how data can be related.

In Chapter 7, we introduced a subset of OWL that we called RDFS-Plus. There are a number of reasons why someone might define a subset of a language like OWL. In the case of RDFS-Plus, we were interested in a subset of the language that has considerable utility ...

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