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Re: Named graphs etc

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Mon, 8 Mar 2004 12:32:32 +0100
Message-Id: <4A1185CC-70F4-11D8-AAB0-000A95EAFCEA@nokia.com>
Cc: <www-archive@w3.org>, "ext Jeremy Carroll" <jjc@hplb.hpl.hp.com>, <chris@bizer.de>
To: "ext Pat Hayes" <phayes@ihmc.us>

On Feb 27, 2004, at 03:13, ext Pat Hayes wrote:

>  We may, though, end up with an infinite recursion. I.e., we have
>  a graph X that is asserted. In order to say that X is asserted,
>  we have to have another graph X' containing a statement that
>  X is asserted. But if X' is also asserted, we have to have another
>  graph X'' with a statement saying that X' is asserted, etc., etc.
> Lewis Carroll was there first:
> http://www.lewiscarroll.org/achilles.html
>  ???
> Nah, don't worry about it. Once you assert something, its asserted. 
> You don't need to assert the assertion.

Sorry, Pat. I don't follow you.

If there is a graph X and a graph Y, and there is a triple in graph Y
that says that graph X is asserted, yet we find no triple saying that
graph Y is asserted, then is graph X actually asserted? If the triple
asserting graph X is not asserted, then how can graph X be asserted?

That said, I'm starting to appreciate some of Chris' arguments about
all statements being asserted, no matter what.

I still have some questions about how to "bootstrap" trust, such that
it seems there must be some requirement for each graph to contain
statements reflecting its source/authority (a signature perhaps?)
otherwise, how do you anchor your trust in terms of a given graph?


> Pat
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Patrick Stickler
Nokia, Finland
Received on Monday, 8 March 2004 06:32:38 UTC

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