Fwd: Importing RDF documents from RIF

Hi all,

I had some discussions about this very issue with sandro and chris at ISWC.
This issue is also problematic for SPARQL, if we want to give a semantics to SPARQL over RDF+RIF
since there is no way to define or link to a ruleset from a "normal" SPARQL datased.

  I suggest I will summarise the options in an email shortly and get involved when it is discussed in a telecon, apologies for my otherwise silence recently, being swamped with other issues.

best,
Axel


Begin forwarded message:

> Resent-From: public-rif-comments@w3.org
> From: Jose María <josem.alvarez@fundacionctic.org>
> Date: 18 January 2010 12:25:16 GMT
> To: <public-rif-comments@w3.org>
> Cc: "Diego Berrueta Munoz" <Diego.Berrueta@fundacionctic.org>
> Subject: Importing RDF documents from RIF
> archived-at: <http://www.w3.org/mid/4B54532C.8050000@fundacionctic.org>
> 
> Dear RIF working group,
> 
> 
> we would like to raise some questions regarding the practical use of
> import clause w.r.t RDF data and OWL ontologies:
> 
> 1) Which is the minimun set of RDF serialization formats that are
> supposed to be supported by a RIF implementation? In the specification
> SWC[1] we read:
> 
> "Several syntaxes have been proposed for the exchange of RDF graphs, the
> normative syntax being RDF/XML [RDF-Syntax]. RIF does not provide a
> format for exchanging RDF graphs; it is assumed that RDF graphs are
> exchanged using RDF/XML, or any other syntax that can be used for
> representing or exchanging RDF graphs."
> 
> Note that the test cases[2] use the Turtle syntax.
> 
> 2) If more than one RDF serialization format are to be supported or
> required, how the RIF implementation can determine the parser to be used
> for each import clause?
> 
> 
> Thank you in advance!
> 
> Best regards,
> 
> CTIC
> 
> 
> 
> [1] http://www.w3.org/2005/rules/wiki/SWC#RDF_Compatibility
> [2]
> http://www.w3.org/2005/rules/test/repository/tc/RDF_Combination_Constant_Equivalence_1/RDF_Combination_Constant_Equivalence_1-premise.rif
> 
> 
> --
> Jose María Alvarez
> CTIC-Centro Tecnológico
> Research Engineer - Semantic Technologies
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>