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Re: [ENT] reuse of rif namespace for rif:imports.

From: Axel Polleres <axel.polleres@deri.org>
Date: Tue, 25 May 2010 18:27:05 +0100
Cc: "Birte Glimm" <birte.glimm@comlab.ox.ac.uk>, "Chimezie Ogbuji" <ogbujic@ccf.org>, "SPARQL Working Group" <public-rdf-dawg@w3.org>
Message-Id: <3319A7AC-BA90-4A31-AEB5-31230DC35C23@deri.org>
To: Ivan Herman <ivan@w3.org>
> 
> Having a separate URI for a single property might be an overkill, that is a con 4.

yes... guess that was I guess my unease feeling that I could't articulate so far...
as Birte, I personally don't see the real problem with 3... others can reuse it, even if it's the sparql namespace.
Axel

On 25 May 2010, at 17:33, Ivan Herman wrote:

> 
> Having a separate URI for a single property might be an overkill, that is a con 4.
> 
> Sigh...
> 
> Ivan
> 
> (B.t.w., I just got a request from Lee to set up a separate namespace document for http://www.w3.org/ns/sparql#.) 
> 
> 
> 
> On May 25, 2010, at 17:59 , Birte Glimm wrote:
> 
>> I don't have a strong opinion, but I am concerned about #1 and #2 for
>> the reasons given and before Axel's and Ivan's email I didn't even
>> imagine that a new namespace would also be possible. Since it seems to
>> be, I have no problems with that since it would make the construct a
>> bit more future-proof. I am still less concerned about #3 than Ivan,
>> so either #3 or #4 would work well for me.
>> Birte
>> 
>> On 25 May 2010 12:54, Ivan Herman <ivan@w3.org> wrote:
>>> 
>>> On May 25, 2010, at 13:42 , Axel Polleres wrote:
>>> 
>>>> 
>>>> We have overall four alternatives, it seems:
>>>> 
>>>> 1.  (ab)using the rif: namespace, i.e. rif:imports: might be acceptable, we need to check with rif group.
>>>> 
>>>>   concern: may be confusing, since recursive imports are not considered as RIF-RF combination semantics doesn't know about rif:imports
>>>> 
>>> 
>>> Understand
>>> 
>>>> 2.  (ab)using the rdf: namespace, i.e. rdf:rif-imports.
>>>> 
>>>>   potentially similar issues as 1?
>>>> 
>>> 
>>> Indeed
>>> 
>>>> 3.  use the sparql: namespace, which we need for functions etc. anyways... i.e.  sparql:rifImports or sparql:rif-imports
>>>>    pro: straightforward
>>>>    con: it was raised earlier that this import mechanism may be useful/needed by others, so we shouldn't tie it to sparql.
>>>> 
>>> 
>>> Agree with 'con' (sorry Birte, that is also an answer to you). I would not want this to be too sparql specific
>>> 
>>>> 4. use a new namespace *and* a new prefix, eg. rif2rdf:imports where
>>>>    @prefix rif2rdf = <http://www.w3.org/ns/rif2rdf#imports>
>>>> 
>>>> 
>>> 
>>> I actually do not have a problem with that one
>>> 
>>> 
>>>> 
>>>> <chair-hat off> My personal opinion:
>>>> 
>>>> While I am still worried a lot about the objection for 1. and fear objections against 2., I am starting to think about the objection against 3. with a bit more distance... why should we speculate about later reuse that is not yet there? In case, others are free to reuse sparql:rifImports.
>>>> 
>>>> - sceptical about 1.
>>>> - neutral about 2.
>>>> - in favor of 3.
>>>> - neutral about 4. (admittedly, I have no idea for a "sexy" prefix name, not entirely happy with rif2rdf: )
>>>> 
>>>> </chair-hat off>
>>> 
>>> 
>>> I am more in favour of #4.
>>> 
>>> Ivan
>>> 
>>> 
>>>> 
>>>> Other expressions of preference?
>>>> 
>>>> Axel
>>>> 
>>>> 
>>>>> 
>>>>> Ivan
>>>>> 
>>>>>> 
>>>>>> 
>>>>>> On 21 May 2010, at 15:52, Chimezie Ogbuji wrote:
>>>>>> 
>>>>>>> Okay, I've reverted back to this import URI, added an editorial note for the
>>>>>>> URI of entailment regime, added clarifying sentences in the editorial note
>>>>>>> regarding safety, and added additional references.  I've also updated
>>>>>>> 'Finite Answer Set Conditions (Informative)' with additional information
>>>>>>> regarding safety as well.
>>>>>>> 
>>>>>>> -- Chime
>>>>>>> 
>>>>>>> On 5/21/10 10:05 AM, "Ivan Herman" <ivan@w3.org> wrote:
>>>>>>> 
>>>>>>>> http://www.w3.org/ns/rif#imports
>>>>>>> 
>>>>>>> 
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>>>>> 
>>>>> 
>>>>> ----
>>>>> Ivan Herman, W3C Semantic Web Activity Lead
>>>>> Home: http://www.w3.org/People/Ivan/
>>>>> mobile: +31-641044153
>>>>> PGP Key: http://www.ivan-herman.net/pgpkey.html
>>>>> FOAF: http://www.ivan-herman.net/foaf.rdf
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>> 
>>> 
>>> 
>>> ----
>>> Ivan Herman, W3C Semantic Web Activity Lead
>>> Home: http://www.w3.org/People/Ivan/
>>> mobile: +31-641044153
>>> PGP Key: http://www.ivan-herman.net/pgpkey.html
>>> FOAF: http://www.ivan-herman.net/foaf.rdf
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
>> 
>> 
>> -- 
>> Dr. Birte Glimm, Room 306
>> Computing Laboratory
>> Parks Road
>> Oxford
>> OX1 3QD
>> United Kingdom
>> +44 (0)1865 283529
> 
> 
> ----
> Ivan Herman, W3C Semantic Web Activity Lead
> Home: http://www.w3.org/People/Ivan/
> mobile: +31-641044153
> PGP Key: http://www.ivan-herman.net/pgpkey.html
> FOAF: http://www.ivan-herman.net/foaf.rdf
> 
> 
> 
> 
> 
Received on Tuesday, 25 May 2010 17:27:39 GMT

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