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Re: hasProvenance property name [MAYBE URGENT]

From: Paul Groth <p.t.groth@vu.nl>
Date: Tue, 26 Feb 2013 10:51:17 +0000
Message-ID: <CAJCyKRq-Mp=1gwnteGs2fKuXUz6BDJirqwHDfDwRX0ZK_BGMMA@mail.gmail.com>
To: Ivan Herman <ivan@w3.org>
Cc: Luc Moreau <l.moreau@ecs.soton.ac.uk>, Graham Klyne <GK@ninebynine.org>, Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>, "www-archive@w3.org" <www-archive@w3.org>
That seems to be the best way then.

so prov:hasprovenance or prov:has_provenance

?

Paul


On Tue, Feb 26, 2013 at 10:13 AM, Ivan Herman <ivan@w3.org> wrote:

> Do you mean the element that is generated into the header of the HTML? If
> that is the only place it appears, I think we can change that for the
> published PR document before handing it over to the webmaster.
>
> Ivan
>
> On Feb 26, 2013, at 10:42 , Luc Moreau <l.moreau@ecs.soton.ac.uk> wrote:
>
> > It's in the <link> element we added last week.
> >
> > On 26/02/2013 09:40, Ivan Herman wrote:
> >> Graham,
> >>
> >> I am not sure I understand something.
> >>
> >> I have looked at the prov-o document, and that document does not
> mention the prov:hasProvenance term. Ie, where does this term appear in any
> of the four Rec-track documents? More importantly, does it appear, if it
> does, in a normative section?
> >>
> >> Ivan
> >>
> >>
> >> On Feb 26, 2013, at 10:30 , Graham Klyne<GK@ninebynine.org>  wrote:
> >>
> >>
> >>> Hi,
> >>>
> >>> [I'm keeping this off-list for now, because if Ivan says there's
> nothing we can do at this juncture, I see little point in opening the issue
> for wider discussion.  I am cc'ing www-archive so there's a record of our
> discussion.]
> >>>
> >>> This is a bit embarrassing, given an email I wrote just a couple of
> days ago.
> >>>
> >>> I'm working through comments on PROV-AQ, and Stian has raised the
> following:
> >>>
> >>> [[
> >>> 32) According to http://tools.ietf.org/html/rfc5988#section-4.2
> >>>
> >>> When extension relation types are compared, they MUST be compared as
> >>>   strings (after converting to URIs if serialised in a different
> >>>   format, such as a Curie [W3C.CR-curie-20090116]) in a case-
> >>>   insensitive fashion, character-by-character.  Because of this, all-
> >>>   lowercase URIs SHOULD be used for extension relations.
> >>>
> >>> Should we not have relation URIs that are all lowercase to avoid
> problems?  ie.
> >>>
> >>> Link:<http://acme.example.org/provenance/super-widget>;
> >>>           rel="http://www.w3.org/ns/prov#hasprovenance"
> >>> ]]
> >>>
> >>> I had completely missed this in RFC5988, and had forgotten about
> Stian's comment when I replied a couple of days ago.
> >>>
> >>> If we hadn't just been through the incorporation of provenance links
> into the published documents, I'd suggest changing "hasProvenance" to
> "has_provenance" to avoid the problems noted.
> >>>
> >>> So, what now?  I see a few options:
> >>>
> >>> (a) keep the same name, and simply note that, when used as a link
> relation, prov:hasProvenance is compared case-insensitively.
> >>> (b) if it's not too late, change the property name
> >>> (c) define a second property that is all lowercase, and declared
> equivalent to the first.
> >>>
> >>> As far as I can tell, the main consequence of going with option (a) is
> that we MUST NOT in future define a different property/relation
> prov:hasprovenance, as under some circumstances covered by RFC5988, this
> would be indistinguishable from prov:hasProvenance.
> >>>
> >>> Given where we now are, my inclination would be to stay with things as
> they are, but add a note reserving the all lower-case versions of
> prov:hasProvenance, etc., from future use because of the case insensitivity
> comparison requirement.
> >>>
> >>> #g
> >>> --
> >>>
> >>
> >> ----
> >> Ivan Herman, W3C Semantic Web Activity Lead
> >> Home: http://www.w3.org/People/Ivan/
> >> mobile: +31-641044153
> >> FOAF: http://www.ivan-herman.net/foaf.rdf
> >>
> >>
> >>
> >>
> >>
> >>
> >
> > --
> > Professor Luc Moreau
> > Electronics and Computer Science   tel:   +44 23 8059 4487
> > University of Southampton          fax:   +44 23 8059 2865
> > Southampton SO17 1BJ               email: l.moreau@ecs.soton.ac.uk
> > United Kingdom                     http://www.ecs.soton.ac.uk/~lavm
> >
> >
>
>
> ----
> Ivan Herman, W3C Semantic Web Activity Lead
> Home: http://www.w3.org/People/Ivan/
> mobile: +31-641044153
> FOAF: http://www.ivan-herman.net/foaf.rdf
>
>
>
>
>
>


-- 
--
Dr. Paul Groth (p.t.groth@vu.nl)
http://www.few.vu.nl/~pgroth/
Assistant Professor
- Knowledge Representation & Reasoning Group |
  Artificial Intelligence Section | Department of Computer Science
- The Network Institute
VU University Amsterdam
Received on Tuesday, 26 February 2013 10:51:46 GMT

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