
236 ◾ Secure Data Provenance and Inference Control
representation. New policy types are compatible as long as a suitable parser is pro-
vided to translate each policy type to an internal representation. e internal rep-
resentation can be any technology that operates over an RDF graph; for example, a
SPARQL query, DL, or SRWL rule. e policy screen has two panels as shown in
Figure 17.3. e left panel displays a list of policies loaded but not in effect, while
the right panel displays the list of loaded policies that are in effect.
Parsing process. A high-level policy has to be translated to a suitable format
and representation in order to be proces ...