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Re: hasProvenance property name [MAYBE URGENT]

From: Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>
Date: Tue, 26 Feb 2013 09:47:11 +0000
Message-ID: <CAPRnXt=5vHixcHpQGVJtJSo1iWiKsKNBCzeMMBR18ut9MvyQQw@mail.gmail.com>
To: Luc Moreau <l.moreau@ecs.soton.ac.uk>
Cc: Ivan Herman <ivan@w3.org>, Graham Klyne <GK@ninebynine.org>, Paul Groth <p.t.groth@vu.nl>, "www-archive@w3.org" <www-archive@w3.org>
Ah, so it's just a problem with the wrong predicate for the
self-provenance in the HTML.. like:

<link rel="http://www.w3.org/ns/prov#hasProvenance"
href="http://www.w3.org/2011/prov/provenance/prov-dm">

in https://dvcs.w3.org/hg/prov/raw-file/default/model/releases/PR-prov-dm-20130312/Overview.html


I'm not a W3C guy, but I would assume fixing such minor HTML-syntactic
issues which are not part of defining the spec (pretty non-normative!)
should be OK, at least before the publication day.




On Tue, Feb 26, 2013 at 9:42 AM, 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
>
>



-- 
Stian Soiland-Reyes, myGrid team
School of Computer Science
The University of Manchester
Received on Tuesday, 26 February 2013 09:47:59 GMT

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