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RE: Call for comments on your implementation experience. WebODE

From: Oscar Corcho <ocorcho@fi.upm.es>
Date: Wed, 12 Nov 2003 16:14:36 +0100
To: Jim Hendler <hendler@cs.umd.edu>, public-webont-comments@w3.org
Cc: Rafa Gonzalez <rgonza@delicias.dia.fi.upm.es>
Message-id: <004c01c3a92f$af3d40d0$9d0b648a@buchanan>

Hi all,

This is our experience of providing OWL DL support to the WebODE ontology
engineering platform.

- The effort needed to implement a translation system between OWL DL and
WebODE was around 2.5 man months, taking into account that we had already
studied in depth the OWL language and its evolution during the last year.
This effort can be further decomposed in the following:
* 1 month for creating an ad hoc Java API to read OWL documents. We must
remark that by the time when we started its implementation there were no
APIs available for OWL. We used the Jena support (version 1.6.1) for RDF.
Our work consisted in transforming the OWL document into a set of RDF
triples, using ARP, and using RDQL to define the queries that allowed us to
fill in the corresponding OWL model in our API.
* 1 month for defining the transformations needed to import OWL ontologies
into WebODE, taking into account that they are based on different KR
formalisms.
* 1/2 month for defining the transformations needed to export OWL ontologies
from WebODE.

- With regard to the OWL documentation, it was fine, taking into account
that we had already a deep knowledge of DAML+OIL. The main problems that we
faced were due to the evolution of the language while we were developing the
tool (we started around February/March 2003).

- Finally, regarding tools, we used Jena 1.6.1. No need to say that we would
have used Jena 2 if it had been available by the time when we started
working, since much of the work we needed to do was then done by them.

Regards,
	Oscar Corcho
	Ontological Engineering Group
	Universidad Politecnica de Madrid







-----Mensaje original-----
De: public-webont-comments-request@w3.org
[mailto:public-webont-comments-request@w3.org]En nombre de Jim Hendler
Enviado el: viernes, 07 de noviembre de 2003 16:10
Para: public-webont-comments@w3.org
Asunto: Call for comments on your implementation experience



it is the opinion of the chair of WOWG (me) that we have now met all
of our exit criteria (modulo potential change in RDF) and thus I am
going to begin preparing materials for our eventual move to Proposed
Recommendation -- one thing that would help is if the implementors of
OWL reasoners, ontologies, or etc. were to share with us their
experiences -- this is especially valuable (but not limited to) those
who have contributed their results to our test documents.
  We are expecially interested in feedback with respect to whether you
were able to implement the langauge based on the documents (were we
clear), were there other people's tools, products, techniques you
found valuable, and how long did it take you and how hard was it (in
qualitative terms is fine).
  Unclear to me exactly how I will use this information, but I would
prefer responses to this list, and in public, so that I am free to
forward what you write to the Working Group and/or other W3C lists.
  thanks
  Jim Hendler
p.s. Please feel free (and encouraged) to circulate this message to
all and sundry who may have implemented in this space

--
Professor James Hendler				  hendler@cs.umd.edu
Director, Semantic Web and Agent Technologies	  301-405-2696
Maryland Information and Network Dynamics Lab.	  301-405-6707 (Fax)
Univ of Maryland, College Park, MD 20742	  *** 240-277-3388 (Cell)
http://www.cs.umd.edu/users/hendler      *** NOTE CHANGED CELL NUMBER ***
Received on Wednesday, 12 November 2003 10:11:22 GMT

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