
440 Analyzing and Securing Social Networks
content of information instead of just presenting information to human users. OWL facili-
tates greater machine interpretability of content than that supported by RDF by providing
additional vocabulary for describing properties and classes along with a formal semantics.
OWL has three increasingly expressive sublanguages: OWL Lite, OWL DL, and OWL
Full, and one has the freedom to choose a suitable sublanguage based on application
requirements. In CAISS++, we plan to make use of OWL, which is much more expressive
than RDF, to model security policies through organization-specic domain ontologies as
we