Re: AW: (SeWeb) KAON - KArlsruhe ONtology and Semantic Web Infrastructure


Thanks for the information.  I agree that having a
flexible modular system with clearly defined import
and export options is essential.

Your note, quoted below, is a good response, and I
suggest that you include it (or something like it)
in an FAQ list on your web site.

John Sowa

Dear all,

actually we analyzed what can be reused from
existing open source software components like
	- XML Parsers
  	- RDF Parsers
	- Relational Databases
	- Application Servers
	- Ontology Editors
	- Presentation Engines

We reused the most basic and stable
components like XML parsers (Xerces),
relational databases (Postgres),
application servers (JBoss) and
presentation engines (TomCat).

With respect to existing RDF parsers we were
confronted with serious performance problems.
Thus, we implemented a new one being compliant
to the W3C specification.

With respect to ontology editors we
were confronted with the problem that
each ontology modeling tool implements
its own "specific data model", typically
focusing on a specific representation
paradigm. Thus, this results in the fact
that it is impossible that one just
takes a specific tool and uses it as
a frontend for some specific backend
software. Thus, the only thing that works
is to provide import/export facilities.
In our case we provide an import tool for
Protege-based ontologies and RDFS ontologies
in general.

Personally I don't believe that in real life
there will be ONE ontology tool. Is there
one word processor, one HTML editor, one
UML editor? The biggest question however is
interoperability between these tools and that
is why the work of W3C and its working group
WebOnt is so important for the progress
of the Semantic Web.


Received on Tuesday, 8 October 2002 09:18:34 UTC