Figure 11

The three PaCE implementations with different levels of granularity. The PaCE approach allows applications to choose a desired level of granularity for representing provenance of the components of a RDF triple. The three approaches vary from (a) an exhaustive approach that explicitly models provenance of the S, P, and O componets of a triple, to (b) a minimalist approach that tracks the provenance of only the S of a triple, and finally (c) an intermediate approach that tracks the provenance of the P (in addition to the S) of a triple. There are advatanges and disadvantages associated with each of the three approaches that need to be considered by an application.