Inference

The basic idea of inference is that it is possible to know more about a set of data than what is explicitly expressed in the data.

scardf -Scala RDF API (Jena façade) @ Google Code

Easier (?) RDF manipulation, that’s the goal ;-)

(via:late2theparty:)

Source: late2theparty

Why RDF Ought to make Web Apps easier to build

RDF & Multiple inheritance

How does multiple inheritance work in the RDF Schema Language? Just apply the rule twice. If A is subClassOf B and A is also subClassOf C, then any individual x that is a member of A will also be a member of B and of C.

-Morgan Kaufmann (Semantic Web for the Working Ontologist)

Web & Semantic Web

The Web (World Wide Web)

  • The World Wide Web  is a web of documents; A global repository of linked documents (with HTML hyper-links acting as the glue).
  • Documents that are well presented for humans to glean information from.
  • One can navigate the web, hopping from one document to another transparently irrespective of which computer the documents are stored on.
  • Web is a realization of “It isn’t the computers, but the documents which are interesting”.
  • The World Wide Web is Document centric.

The Semantic Web

  • The Semantic Web is a web of data; A Web scale database (RDF defining the structure of data)
  • Data that is structured enough  to be processed by machines/software-agents (which in-turn may provide information of better quality for human consumption)
  • Graphs of data which can be processed to infer non explicit knowledge.
  • Semantic Web is a realization of “It isn’t the Documents but the things they are about that are interesting”
  • The Semantic web is Data centric.