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Re: Action-48 text: a New Plan for plain literals

From: Peter Frederick Patel-Schneider <pfps@research.bell-labs.com>
Date: Mon, 23 May 2011 10:24:06 -0400
Message-ID: <20110523.102406.322954035501508439.pfps@research.bell-labs.com>
To: <ivan@w3.org>
CC: <axel.polleres@deri.org>, <public-rdf-wg@w3.org>, <sandro@w3.org>, <w3c-semweb-cg@w3.org>, <ian.horrocks@comlab.ox.ac.uk>, <cawelty@gmail.com>, <csma@fr.ibm.com>
There would be an effect on the OWL 2 specs.  At the very least,
rdf:LanguageTaggedLiteral would have to be added to the reserved
vocabulary.  Sections 4.3 and 5.7 of the structural spec should be
rewritten.  I expect that other parts of this document would have to be
changed to reflect the new kind of lexical space.

Other normative documents would probably have to be changed, including
the mapping to RDF, the RDF-based semantics, and profiles.

There would be an effect on OWL 2 implementations.  Each implementation
would have to handle this new form for strings.

Getting approval from the OWL WG for changes might be very difficult, as
there was much debate on rdf:PlainLiteral.  I don't see any benefits of
rdf:LanguagedTaggedString over rdf:PlainLiteral.   I expect that
approval would be contingent on approval from the OWL WG.


From: Ivan Herman <ivan@w3.org>
Subject: Re: Action-48 text: a New Plan for plain literals
Date: Mon, 23 May 2011 03:18:00 -0500

> Peter, Axel
> I believe the answer will be 'no', but I just want to check: would the
> introduction of a new type, and the special nature of the
> rdf:LanguageTaggedLiteral, have any effect on the OWL 2 and RIF specs
> from a functional point of view?
> Note that there is a plan to publish an edited recommendation for both
> OWL 2 and RIF when the new version of the XSD spec is published as a
> recommendation. At that point we can add a reference to
> rdf:LanguageTaggedLiteral to the RIF Datatypes[1] and the OWL 2
> structural specification[2] documents (both documents explicitly list
> the datatypes they handle). Hm... it may not be as simple if the XSD
> spec comes out before the new RDF spec...
> Ivan
> [1] http://www.w3.org/TR/rif-dtb/
> [2] http://www.w3.org/TR/owl2-syntax/ 
> On May 23, 2011, at 05:01 , Pat Hayes wrote:
>> The proposal outlined in the wiki here
> http://www.w3.org/2011/rdf-wg/wiki/StringLiterals/LanguageTaggedLiteralDatatypeProposal
>> completes Richard and my action item 48 from the last telecon.
>> Pat
Received on Monday, 23 May 2011 14:26:34 UTC

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