Re: My best practices for Ontology versioning for http://nlp2rdf.org, was Re: Versioning system for ontologies

Dear Sebastian,
This statement:
"When you publish ontologies without data, you can use '#' . However, if
you want to query instances via Linked Data in a database, you have to use
'/' as DBpedia does for classes: http://dbpedia.org/ontology/PopulatedPlace"

is not correct. You can use "#" to query instances via Linked Data
databases. That is just the URI of the type. In fact if DBpedia had chosen

"http://dbpedia.org/ontology#PopulatedPlace<http://dbpedia.org/ontology/PopulatedPlace>"
instead of its current URI it would still be fine. It doesn't affect the
query.

I'm not going to enter in the debate of "# vs /", but normally it is a
design decission that has to do more with the size of vocabularies than the
instances.

Best,
Daniel


2013/4/22 Sebastian Hellmann <hellmann@informatik.uni-leipzig.de>

>  Dear all,
>
> personally, I have been working on this for quite a while and for me the
> best and easiest way is as documented here:
> https://github.com/NLP2RDF/persistence.uni-leipzig.org#readme
>
> They are simple and effective and I couldn't imagine anything more.
>
> Note that I have also secured persistent hosting for the URIs (also an
> important point).
> Feedback welcome, of course.
>
> All the best,
> Sebastian
> Ontology: http://persistence.uni-leipzig.org/nlp2rdf/ontologies/nif-core#
>  # vs /
>
> When you publish ontologies without data, you can use '#' . However, if
> you want to query instances via Linked Data in a database, you have to use
> '/' as DBpedia does for classes:
> http://dbpedia.org/ontology/PopulatedPlace
>  <https://github.com/NLP2RDF/persistence.uni-leipzig.org#workflow>Workflow
>
>    1. I edit the ontologies in turtle syntax with the Geany text editor
>    (or a Turtle editor
>    http://blog.aksw.org/2013/xturtle-turtle-editing-the-eclipse-way ),
>    This allows me to make developers comments using "#" directly in the
>    source, see e.g. nlp2rdf/ontologies/nif-core.ttl
>    2. When I am finished I use rapper (
>    http://librdf.org/raptor/rapper.html) to convert it to rdfxml (
>    nlp2rdf/ontologies/nif-core.owl )
>    3. I am versioning the ontologies in a folder with the version number,
>    e.g. version-1.0 If somebody wants to find old ontologies, she can find
>    them in the GitHub repository, which is linked from the ontology. I assume
>    this is not often required, but it is nice to keep old versions. The old
>    versions should be linked to in the comment of the ontology, see the header
>    of nif-core.ttl
>    4. Then I use git push to push the changes to our server
>    5. (not yet) I use a simple OWL2HTML generator, e.g.
>    https://github.com/specgen/specgen
>    6. add yourself to http://prefix.cc, see e.g. http://prefix.cc/nif
>    7. The versions are switched and published by these .htaccess rules,
>    e.g.
>    RewriteRule .(owl|rdf|html|ttl|nt|txt|md)$ - [L]
>    # (in progress) RewriteCond %{HTTP_ACCEPT} text/html
>    # (in progress) RewriteRule ^nif-core$
>    /nlp2rdf/ontologies/nif-core/version-1.0/nif-core.html [R=303,L]
>
>    RewriteCond %{HTTP_ACCEPT} application/rdf+xml
>    RewriteRule ^nif-core$
>    /nlp2rdf/ontologies/nif-core/version-1.0/nif-core.owl [R=303,L]
>
>    RewriteRule ^nif-core$
>    /nlp2rdf/ontologies/nif-core/version-1.0/nif-core.ttl [R=303,L]
>
>
>
>
>
>
> Am 19.04.2013 16:05, schrieb Prateek:
>
>  Hello all,
>
>  I am trying to identify a system which will provide versioning and
> revision control capabilities specifically for ontologies. Does anyone have
> any experience and idea about which systems can help out or if systems like
> SVN, CVS can do the job?
>
>  Regards
>
>  Prateek
>
>  --
>
> - - - - - - - - - - - - - - - - - - -
> Prateek Jain, Ph. D.
> RSM
> IBM T.J. Watson Research Center
> 1101 Kitchawan Road, 37-244
> Yorktown Heights, NY 10598
> Linkedin: http://www.linkedin.com/in/prateekj
>
>
>
> --
> Dipl. Inf. Sebastian Hellmann
> Department of Computer Science, University of Leipzig
> Projects: http://nlp2rdf.org , http://linguistics.okfn.org ,
> http://dbpedia.org/Wiktionary , http://dbpedia.org
> Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
> Research Group: http://aksw.org
>