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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?
> > I don't know the time range, can I use a relative term such as "during
> > 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).


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

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