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

Dear all,
I think it is right.
That's impossible there is only ONE ontology editor.
The problem is interoperability of data model between tools, such as
KAON and Protege.
How to integrate these different data model is another challenge.
And I think the "common ontology tool" Dr. Sowa meant that may mean "the
common data model".
Right?  ^_^


Alexander Maedche wrote:
> 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.
> Best,
> Alex
> -----Ursprüngliche Nachricht-----
> Von: John F. Sowa []
> Gesendet: Dienstag, 8. Oktober 2002 00:09
> An: Alexander Maedche
> Cc:;;;
> Betreff: Re: (SeWeb) KAON - KArlsruhe ONtology and Semantic Web
> Infrastructure
> I looked at the KAON web site and some of the material there, and I am happy
> that it is an open-source project based on Java. But I had a question about
> why KAON is independent from other open-source, Java-based projects for
> ontology editing and development.
> I don't want to start an argument about why one system might be better or
> worse than another, especially since I am not at the moment using any of
> them.  But since I am working with ontologies, I would like to consider
> using some such system and/or recommending it to my colleagues.  I would
> like to know why there are so many systems available that are being
> developed independently by different groups.
> For example, the Protege project at Stanford is also an open-source
> Java-based ontology editor and development platform:
> I have also looked at that system, but I have not used it either. But it is
> also available as an open-source project, and I have seen demos and examples
> of other development platforms that are being developed on top of various
> platforms, including Java.
> Why are all these groups working on independent tools for ontology instead
> of collaborating to build common tools that everyone could use?
> John Sowa

Received on Tuesday, 8 October 2002 03:33:49 UTC