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Re: GRDDL spec ready for release?

From: Chimezie Ogbuji <ogbujic@bio.ri.ccf.org>
Date: Fri, 2 Feb 2007 13:22:04 -0500 (EST)
To: public-grddl-wg Group <public-grddl-wg@w3.org>
Message-ID: <Pine.GSO.4.60.0702021306320.9955@joplin.bio.ri.ccf.org>

> Thanks so much for all the hard work on the Spec! I'd like at least one
> more reviewer besides Ron to give a good read before we release it as a
> Last Call.

I'll volunteer to help review the spec.  I'll try to focus on the 
informative mechanical rules, as I have a concern that there isn't much 
precedent in using rules to express the processing mechanics of a 
specification as well as the informal dependencies on the vocabularies 
used in the rules (the log:* properties in particular as well as 

The appendix to the mechanical rules has @@explain TODO's 
regarding the vocabularies which are not 'formal', and I think these need 
to be very explicit about what the semantics of these terms are.  The fact 
that the rules rely on generating function symbols makes the underlying KR 
quite expressive and perhaps not aligned with the target KR of the 'sanctioned'
semantic web rule language (RIF) - which is still a work in progress.

log:uri and log:includes in particular are quite cryptic in their formal 
semantics - at least from what I know of what those terms are meant to 

Though the rules are informative, they have the nice advantage that they 
are 'complete' in the sense that proofs can be generated to determine 
GRDDL compliance.  The bar for the average GRDDL implementor becomes 
significantly higher if they intend to interpret the rules in any formal 
way, and I think at the very least we should be sure that the specificatin 
is as clear as it can be (given the fact that we still don't have a 
'sanctioned' SW rule language) about such an interpretation.

Chimezie Ogbuji
Lead Systems Analyst
Thoracic and Cardiovascular Surgery
Cleveland Clinic Foundation
9500 Euclid Avenue/ W26
Cleveland, Ohio 44195
Office: (216)444-8593
Received on Friday, 2 February 2007 18:22:23 UTC

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