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Re: AW: Literals representing people?

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Mon, 29 Sep 2003 16:06:00 +0300
To: "ext Thomas B. Passin" <tpassin@comcast.net>, <www-rdf-interest@w3.org>
Message-ID: <BB9E08E8.1819%patrick.stickler@nokia.com>

On 2003-09-29 15:42, "ext Thomas B. Passin" <tpassin@comcast.net> wrote:

> 
> Leo Sauermann wrote:
> 
>> Identify people by email address or any other URI (f.e. homepage) but
>> not using Literals.
>> 
> Except - do not use any uri that you might also want to make
> statements about in its own right, such as a home page.  Otherwise, you
> are back to the ambiguity as to whether the subject is the person or the
> page (or whatever).  Or be willing to distinguish between the two usages
> by context, but that makes it much harder to come up with a good domain
> or range for the relevant properties.

Right. Use URIs, yes, but make sure not to introduce any
ambiguity. So don't use the URI of an email account or home
page directly to denote a person. Either use another URI
that explicitly denotes the person, or use a blank node
to indirectly denote the person. E.g.

   <#me> ex:myFriend _:x .
   _:x ex:emailAddress <mailto:somebody@example.com> .

etc. but not

   <#me> ex:myFriend <mailto:somebody@example.com> .

where it becomes ambiguous whether your friend is a
person or a mailbox ;-)

Patrick
Received on Monday, 29 September 2003 09:06:11 GMT

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