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Re: Two dialects: ShEx with a SPARQL/SPIN-friendly subset?

From: Peter F. Patel-Schneider <pfpschneider@gmail.com>
Date: Wed, 29 Apr 2015 15:30:49 -0700
Message-ID: <55415B99.8030006@gmail.com>
To: David Booth <david@dbooth.org>, public-rdf-shapes@w3.org
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I would not say that ShEx is more expressive that SPARQL.  ShEx has some
things that are not obviously in SPARQL (recursion and closure), but SPARQL
has some things that are not in ShEx (datasets, etc.).

I do agree that a concise syntax is nice.  I would go further and say that
it is nearly impossible to have a nice RDF-encoded syntax.

peter


On 04/29/2015 07:15 AM, David Booth wrote:
> It seems like there are two major camps in the RDF Shapes WG: (a) those
> who want a SPARQL/SPIN-friendly language; and (b) those who want a more
> expressive and concise language like ShEx.  Has the WG considered
> standardizing a language with two standard dialects, such as was done
> with OWL?
> 
> It seems to me that if there is a significant number of people who would 
> (continue to) use ShEx -- either because of its additional expressivity
> or its conciseness -- even if the Shapes WG decided to standardize a more
> limited and verbose SPARQL/SPIN-like language, then that is clear
> evidence that a ShEx-like language *should* be standardized, perhaps in
> *addition* to standardizing a SPARQL/SPIN-friendly subset of ShEx, as a
> standard dialect.
> 
> David Booth
> 
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Received on Wednesday, 29 April 2015 22:31:18 UTC

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