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Re: RDF Concepts and formal inference paths ?

From: Seth Russell <seth@robustai.net>
Date: Sun, 20 Oct 2002 14:37:02 -0700
Message-ID: <3DB321FE.9010408@robustai.net>
To: Graham Klyne <GK@NineByNine.org>
CC: "www-rdf-comments@w3.org" <www-rdf-comments@w3.org>

Graham Klyne wrote:

> I agree that "no formal inference path" might include non-RDF 
> inferences, and that one might define 'B:oneOfThem' in such a way that 
> there is a formal inference.
>
> But, in this case, I think the use of English text in an rdfs:comment 
> to convey the intended meaning makes any formal inference path rather 
> unlikely. 

Hmmm ... it seems to me that the formal axioms for both rdfs and daml 
have always been expressed in English rdfs:comment(s) and English 
descriptions in specification documents.  What's the difference between 
transcribing those into an axiom used in a formal computer inference and 
translating "This means the same as rdfs:subClassOf" into {B:oneOfThem 
daml:equivalentTo rdfs:subClassOf}?   There is no difference.    

Behind my quibble is a very important major question.  Will the culture 
of the semantic web embrase the idea that people can coin their own 
terms defining them with formal languages based on previously defined 
RDF terms?  Those new terms then become part of the language of the 
semantic web if they gain popular usage just as words become part of our 
natural languages culture.   The inference paths on those terms *are 
just as formal* as the inference paths on terms that are exclusively 
defined in the rdf, rdfs, daml, and owl namespaces; the only difference 
is that the latter is recommended by the W3C and the former is not.

Is the W3C really in the business of  recommending how we should reason? 
  I think not.  

http://robustai.net/papers/Monotonic_Reasoning_on_the_Semantic_Web.html

Seth Russell
Received on Sunday, 20 October 2002 17:37:41 GMT

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