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RE: Definitions and provenance and invariance

From: Myers, Jim <MYERSJ4@rpi.edu>
Date: Mon, 27 Jun 2011 12:49:03 -0400
Message-ID: <B7376F3FB29F7E42A510EB5026D99EF20534A7FE@troy-be-ex2.win.rpi.edu>
To: Paolo Missier <Paolo.Missier@ncl.ac.uk>
CC: <public-prov-wg@w3.org>
>    Creating names for things in a given state is fine.  However, I
feel that at
> some point you will have to contend with the issue of "what has
> between two things. It may not be the values of some properties, but
> somehow you have to account for the nature of a change?

Absolutely, though I'm not sure how far PIL can go there in the sense
that I'm not sure what else to add to PIL that would not be domain
specific  - beyond the thing-process-execution-thing framework and IVP
to shift between levels (and handling agency, etc.). If PIL allows you
to identify things and state their properties (including perhaps a link
to their external object type), someone with domain knowledge would be
able to understand the nature of the change. You probably need to
understand the nature of the classes of things you're talking about, as
well as the nature of the process (understanding its recipe, which we've
also tried to keep out of scope (just the link to recipe is in)) to
understand the nature of the change. At the PIL level, is it enough if
the answer is that the "what has changed" is the aspect/state of stuff
represented by the invariant properties?

Received on Monday, 27 June 2011 16:50:16 UTC

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