Semantic resource descriptions in ORCA


ORCA relies on declarative semantic resource descriptions to enable its sophisticated resource allocation policies. ORCA's resource descriptions mechanisms are defined as OWL ontologies, with NDL - an RDF-based ontology developed at University of Amsterdam, providing a set of foundational networking abstractions. ORCA's version is called NDL-OWL. This page provides a number of pointers to web resources that enable ORCA implementation.

ORCA semantic resources

Semantic web tools

Here are some of the tools used by ORCA

  • Protege: an ontology construction tool developed at Stanford
  • Jena: Java semantic web framework that enables triple stored, SPARQL queries and inferences
  • Tabulator: generic semantic data browser in Javascript that implements an in-memory RDF-triple store and a SPARQL engine
  • Gleen: a set of SPARQL extensions for network path finding