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Re: datatypes and MT

From: Dan Connolly <connolly@w3.org>
Date: Thu, 08 Nov 2001 13:17:40 -0600
Message-ID: <3BEADA54.5050401@w3.org>
To: Graham Klyne <Graham.Klyne@MIMEsweeper.com>
CC: w3c-rdfcore-wg@w3.org
Graham Klyne wrote:

> At 08:59 AM 11/7/01 -0600, Dan Connolly wrote:
> 
>> > In which case, I think you're flying in the face of existing RDF
>> > practice.
>>
>> Well, yes, I'm aware that folks say things like
>>         the string "Dan Connolly" wrote a mail message
>> and I hope we can show/convince folks that this is
>> not a good idea.
> 
> 
> I think it's fine to educate people that it's not a good idea, but with 
> the current understanding and use of RDF I think we should allow it to 
> be legitimate RDF which *can* be interpreted as the designers intended.
> 
> I think it's a fair trade-off that a fully-generic RDF processor 
> (reasoner?) cannot access the intended meaning without supplying some 
> additional information, which may be awkward to do.
> 
> So the statememt:
> 
>    <http://www.ninebynine.org/> dc:creator "Graham Klyne" .
> 
> should be allowed to be consistent with:
> 
>    <http://www.ninebynine.org/> dc:creator
>        [ a foaf:Person ; foaf:name "Graham Klyne" ] .
> 
> even if it doesn't, of itself, convey the same information.


 From my experience, there lies madness. I wonder if I can
convince folks who haven't walked in my shoes for the last
few years...


In this case, there's just one author of that web site;
let's presume we've communicated that formally...
then we have something that's both
an rdfs:Literal and a foaf:Person. I would
think those classes are disjoint.

Then there's the "turtles all the way down" problem...
if literals work that way in the case of dc:creator,
do they also work that way in the case of foaf:name?
i.e. is

   [ a foaf:Person; foaf:name "Graham Klyne" ]
consistent with
   [ a foaf:Person; foaf:name [ rdfs:value "Graham Klyne" ] ]
or something? can I do it again with rdfs:value? when
do we get to the bottom?


-- 
Dan Connolly, W3C http://www.w3.org/People/Connolly/
Received on Thursday, 8 November 2001 14:17:43 EST

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