W3C home > Mailing lists > Public > www-rdf-interest@w3.org > September 2001

Re: The Semantic Web: An Introduction

From: Sean B. Palmer <sean@mysterylights.com>
Date: Tue, 18 Sep 2001 00:05:02 +0100
Message-ID: <02c201c13fcf$521d0be0$23da93c3@y0r1d9>
To: "dehora" <dehora@eircom.net>
Cc: <www-rdf-interest@w3.org>
Hi Bill,

> Nice to see RDF an article chock full with examples

Thanks :-)

> Comment:     Examples of a Creator include a person, an
>   organisation, or a service. Typically, the name of a Creator
>   should be used to indicate the entity."

Oh dear. It's absolutely fine for a specification to use a property that
expands as:-

{ { :x :creator :y } log:implies { :x x:creator [ :name :y ] }
a log:Truth; log:forAll :x , :y .

but it is rather confusing when this rule is not made clear. In the case of
Dublin Core, the property's usage is made somewhat ambiguous by adding the
"typically" in the comment above. That isn't to say that the property isn't
still useful: perhaps the DCMI were expecting people to declare sub
properties of dc:creator commonly. However, I do not like the way that DCMI
have phrased the current use of dc:title, and I should probably take that
up with them.

The axiom still stands: a title isn't a document, a name isn't a person
(attr: [ :name "TimBL" ]).


Kindest Regards,
Sean B. Palmer
@prefix : <http://webns.net/roughterms/> .
:Sean :hasHomepage <http://purl.org/net/sbp/> .
Received on Monday, 17 September 2001 19:20:50 UTC

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