Semantic Web for Architectures
The Semantic Web
is an initiative of W3C to provide
a common framework that allows data to be shared and reused
across application, enterprise, and community boundaries. It is a
collaborative effort led by W3C with participation from a large number of
researchers and industrial partners. It is based on the Resource Description
Framework (RDF), which integrates a
variety of applications using XML for syntax and URIs for naming.
"The Semantic Web is an extension of the current
web in which information is given well-defined meaning, better enabling
computers and people to work in cooperation." -- Tim
Berners-Lee, James Hendler, Ora Lassila,
The Semantic Web, Scientific American, May 2001
The primary semantic web technologies -
RDF and OWL are of
primary interest to OsEra as a distributed metadata repository, as
components of the semantic core as well as a source of semantically rich
Semantic Web in OsEra
The Semantic Web is a core OsEra technology providing multiple benefits.
RDF as Metadata Infrastructure
OsEra depends on metadata for architectures, artifacts and technologies
being manipulated as metadata in shared repositories. The two primary
technologies providing for this in OsEra are RDF repositories and the
Eclipse-EMF "Eclipse Modeling Framework". As the basis for the
semantic web, RDF also provides a robust environment to manage, integrate
and publish OsEra architectures. An OsEra project is currently
underway to provide a bridge between these two metadata environments.
RDF and OWL as modeling Languages and as part of the semantic core
RDF and OWL are used as semantically rich modeling languages. These
languages are increasingly used as the next step passed "controlled
vocabularies" by providing capabilities of formal semantics. RDF and
OWL semantics have been integrated into the semantic core.
Semantic Grounding of Architectures
These Ontologies are seen as ways to tie formally unrelated models and
architectures together. This is referred to as "semantically
grounding" an architecture. By semantically grounding an architecture,
terms and concepts in that architecture are tied to reference Ontologies
that are then used to bridge between architectures using semantic tooling.
Semantic grounding of languages is provided by the semantic core.
- The MOF/RDF Bridge - The MOF/RDF bridge will allow MOF based
information such as UML, EDOC and ER models to be published as a
semantic web resource. This project bridges the gap between the
modeling and ontology worlds.
- Semantic Core both integrates
the semantic web concepts and is expressed as an OWL ontology.
- Implement RDF as an OMG MOF - This project will further close the
gap between modeling and Ontologies by providing a "Meta Object
Facility" layer over RDF. By implementing the MOF over RDF all MOF
standards compliant modeling assets will be immediately available as
semantic web assets. In addition, the web distribution and
semantic linking capabilities of the the semantic web will become
available tot he MOF.
- Fully implement the semantic core semantics using semantic web
technologies. OWL, RDF and SWIRL will be used to implement the
semantic core semantics, this will provide inference capabilities over
all models in modeling languages that have been integrated with the
- Provide & integrate tooling for semantic grounding of architectures
and architectural integration.
Related Work & Resources
[Links to closed SubProject pages with a brief abstract of each one.]