RE: Question about ODRL 2.0 Common Vocabulary

Hi Agnese

 

You are asking about how to extend the vocabulary which is quite different
to extending a structure:

-          In the XML Encoding defined for ODRL 2.0 and the XML and JSON
Encoding defined for ODRL 2.1 (see the draft section of
https://www.w3.org/community/odrl/) an action is expressed by a URI
identifying this property.

-          Such an action property URI is held in XML by the @name attribute
and in JSON by the action property/field.

-          That means: you only have to provide a new URI for a new action;
this has no impact on the structure, no XML or JSON schema needs to be
changed for that purpose.

-          As just said you need to define a URI for the new action, as Jim
outlined this could be e.g.  http://www.example.com/odrl/action/derive for
your special variant of derive.

-          Next you could consider to link this new action with the existing
ODRL vocabulary: the ODRL action "derive" of the ODRL 2.1 Action vocabulary
(see
https://www.w3.org/community/odrl/work/2-0-common-vocabulary-constraint-draf
t-changes/#section-22) is a narrower term of "use", so you might want to
make the ODRL "use" also the broader term of your derive. In this case you
have to set a broader relationship from your "derive" to the ODRL "use".
This can be done by vocabulary management means like SKOS, see
http://www.w3.org/TR/skos-primer/ 

 

Best,

 

Michael

 

 

 

From: Agnese Farinelli [mailto:agnese.farinelli@studenti.unimi.it] 
Sent: Wednesday, February 25, 2015 12:44 PM
To: public-odrl@w3.org
Subject: Question about ODRL 2.0 Common Vocabulary

 

Good morning,

I wrote you this email for clarify, if I am allowed, a few doubt about ODRL
2.0 Common Vocabulary and the possibility to extend this vocabulary with
dedicated profiles. In your ODRL 2.0 Common Vocabulary final specification
(https://www.w3.org/community/odrl/two/vocab/#section-3) I read that the
possibility to extend the Common Vocabulary is concrete but I didn't find
any technical implementation for this kind of extension (differently, I
found all the informations what I need about the extension of Core Model in
the Core Model concrete XML Schema). I forget to tell you that I am an
Information Technology student in University of Milan: my purpose is to
conduct a research about ODRL 1.1 and ODRL 2.0 for my graduation thesis,
with some practical example about real and study cases. I need to extend the
ODRL 2.0 Common Vocabulary with some specific permissions and constraints
(and other stuff, of course) what are more adapted to define licences over
my study cases. 

So, my question is: where can I find a concrete example about Common
Vocabulary extension? Something like an .xsd file for ODRL 1.1 where I can
use something like the ODRL 1.1 SubstitutionGroup to define new permissions
or constraints. Always if this is possible, because I found several
technical reports and specification documents about ideas or projects for
future Community Profiles, but I didn't find any examples or implementations
of this kind of projects.

Thanks a lot for your attention, and I ask you to forgive me for my bad
english.

I am waiting for an answer. 

My best regards.

 

Farinelli Agnese