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Re: rdfs:class and rdfs:resource

From: Thomas B. Passin <tpassin@comcast.net>
Date: Mon, 12 May 2003 21:52:17 -0400
To: www-rdf-interest@w3.org
Message-id: <002c01c318f2$48c41c70$6401a8c0@tbp1>

[Seth Ladd]

> > Is this true? To make it unambiguous, do I need to specify a time range?
If
> > I don't know the time range, can I use a relative term such as "during
the
> > time I was in Paris" ?
>
> It might help to think about the statement as a noun.  Something like:
>
> John Doe has Travel Itinerary.
> Travel Itinerary has Layover.
> Layover hasCity Paris.
> Travel Itinerary startsOn "June 5".
> Travel Itinerary endsOn "June 8".
> Layover startsOn "June 5, midnight".
> Layover endsOn "June 6, 3 am".
>
> So, instead of saying "John Doe is running." you can say "John Doe had
> Run."  By taking the action (or the "is" in your above example) and
> making it a Thing (noun), you can assign all sorts of properties to it.
> Such as startsOn or endsOn, to take care of the time issue.
>

John Sowa has some good examples of this kind of approach  (using Conceptual
Graphs) in his book on knowldge representation (e.g., figures 3.1, 4.6).

Cheers,

Tom P
Received on Monday, 12 May 2003 21:53:00 GMT

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