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Re: PROPOSED RESOLUTION: use dcterms for the maker element and rename to creator

From: Charles McCathieNevile <chaals@opera.com>
Date: Tue, 08 Jul 2008 17:57:26 +0200
To: "Phil Archer" <parcher@icra.org>, "Public POWDER" <public-powderwg@w3.org>
Message-ID: <op.udzc900lwxe0ny@widsith.local>

There are a few points in this discussion that make me not vote for the  
proposal.

I think that it is important to have something where RDF machines can  
actually process RDF. foaf:Agent has real subclasses we want, dc:Agent  
doesn't, yet. There are also the useful properties of an Agent the foaf  
provides to describe it.

I think the foaf:logo property is useful (although non-critical).

FOAF is, in practice, remarkably widely adopted, and probably in overall  
quality the use is no worse and perhaps better than DC. As an implementor,  
we don't see that there is any special problem using this vocabulary - the  
people who maintain it have shown themselves to understand normal  
standards processes, be responsive and helpful, provide the kind of  
stability that is needed for a standard, and I don't see evidence that the  
community around FOAF is any different.

If I am the only one voting against, I will withdraw. If foaf:Agent were  
defined as a subclass of dcterms:Agent, then the point would become moot,  
although we would still have a messier schema. But as things stand, I  
don't see the need for this change.

cheers

Chaals

On Tue, 08 Jul 2008 16:56:35 +0200, Phil Archer <parcher@icra.org> wrote:

> All valid points Andrea.
>
> I'm not sure how strictly property ranges are ever actually enforced.  
> There are plenty of instances of <dc:creator  
> rdf:resource="http://...foaf.rdf#me" on the Web and the range of  
> dc:creator is string. Actually, I believe it is this fact, that emerged  
> at the 2005 DC conference that I had the pleasure of attending, that was  
> one of the drivers for the change to dcterms:creator.
>
> In other words, my guess is that we may well see quite a few  
> dcterms:creator elements pointing to a foaf:Organization class... and  
> UAs may or may not notice.
>
> P
>
> Andrea Perego wrote:
>>  +1 from me too.
>>  The only issue I see here is that, this way, DR authors should use  
>> dcterms:Agent instead of foaf:Person / foaf:Organization in their RDF  
>> (FOAF?) /profile/ (i.e., the set of RDF statements describing the DR  
>> author). And foaf:Person / foaf:Organization are more "popular" than  
>> dcterms:Agent, as far as I know. And it may be often the case that a DR  
>> author already has a FOAF profile to pointing to: should he/she modify  
>> it?
>>  Probably this will be fixed in the future. According to their formal  
>> definition, between foaf:Agent (and its subclasses) and dcterms:Agent  
>> there does not exist any subClassOf / equivalentClass relationship.  
>> However, they look pretty similar - at least based on their NL  
>> definition:
>> - foaf:Agent: "An agent (eg. person, group, software or physical  
>> artifact)." [1]
>> - dcterms:Agent: "A resource that acts or has the power to act.  
>> Examples of Agent include person, organization, and software agent." [2]
>>  If I'm not mistaken, this may correspond to one of the foaf<->dcterms  
>> mappings that Dan mentioned in his mail [3].
>>  Andrea
>>  [1]http://xmlns.com/foaf/spec/#term_Agent
>> [2]http://dublincore.org/usage/terms/history/#Agent-001
>> [3]http://lists.w3.org/Archives/Public/public-powderwg/2008Jul/0029.html
>>   Phil Archer wrote:
>>>
>>> Following my exchange with Dan Bri just now [1], I'd like to propose  
>>> that we change the name of the POWDER <maker> element to <creator> and  
>>> change the transform so that this becomes <dcterms:creator>.
>>>
>>> Note that the legacy (and commonly seen) dc:creator just takes a  
>>> string whereas dcterms:creator has the range of dcterms:Agent.
>>>
>>> This does not prevent using FOAF terms within a dcterms:Agent class  
>>> (which is good because FOAF has some very useful terms already) but it  
>>> does eliminate POWDER's formal dependence on FOAF.
>>>
>>> We can consider the resolution properly next week at the f2f but if  
>>> there are any comments ahead of that, please speak up.
>>>
>>> Thanks
>>>
>>> Phil.
>>>
>>>
>>> [1]  
>>> http://lists.w3.org/Archives/Public/public-powderwg/2008Jul/0028.html  
>>> onwards
>>>
>>
>



-- 
Charles McCathieNevile  Opera Software, Standards Group
     je parle français -- hablo español -- jeg lærer norsk
http://my.opera.com/chaals   Try Opera 9.5: http://www.opera.com
Received on Tuesday, 8 July 2008 15:58:16 GMT

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