[DL] OWL annotated AIFB portal
sure at aifb.uni-karlsruhe.de
Tue Dec 21 10:38:39 CET 2004
We would like to annouce the SEmantic portAL (SEAL) of the Institute
AIFB at the University of Karlsruhe.
Besides regular pages for human consumption, this portal also
provides annotated pages which contain machine processable content in
form of OWL annotations.
 is not only a reference point for finding information about our
SEAL, but also can be taken as a starting point to explore the
capabilities of the portal by example links. Of particular interest
might be the download of the complete OWL annotations in one ".owl"
*** OWL annotations
The OWL Web Ontology Language  is designed for use by applications
that need to process the content of information instead of just
presenting information to humans. OWL is a W3C Recommendation and
facilitates greater machine interpretability of Web content than that
supported by XML, RDF, and RDF Schema (RDF-S) by providing additional
vocabulary along with a formal semantics.
Throughout the portal information about
- Publications or
are retrieved from a relational database and presented to the user by
Such sites are also annotated by machine-understandable descriptions
according to the SWRC (Semantic Web Research Community) ontology .
Both XHTML files and annotations are interlinked by the <link
rel="meta"> tag. In addition, you may view the automatically
generated information by clicking on the "OWL/RDF" button on pages
about Persons, Publications or Projects. The button is located at the
bottom of each annotated page.
The annotations have been successfully tested with OilEd 3.5.7 and
Protege 3.0 beta, OWL Plug-In Version 1.3, Build 212. All of them
validate correctly against OWL Lite according to the WonderWeb OWL
Note that we use the OWL DLP (Description Logic Programs) fragment
 for the annotations, which is a subset of OWL Lite. Its
expressivity is equal to Datalog while keeping as much of the
Description Logic primitives as possible.
*** General Architecture
For further information about the general architecture please cf. to
our SEAL approach .
 About the AIFB SEAL
 W3C OWL recommendation
 SWRC ontology
 OWL DLP
 Jens Hartmann, York Sure. An Infrastructure for Scalable,
Reliable Semantic Portals. In: IEEE Intelligent Systems 19 (3): 58-
65. May 2004.
Dr. York Sure
Institute AIFB, University of Karlsruhe (TH)
phone: +49 (0) 721 608 6592
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