- From: Manu Sporny <msporny@digitalbazaar.com>
- Date: Sun, 06 Feb 2011 14:35:53 -0500
- To: Toby A Inkster <mail@tobyinkster.co.uk>
- CC: RDFa WG <public-rdfa-wg@w3.org>
Hi Toby, This is an official response from the RDFa Working Group concerning your comments around ISSUE-63: Case-insensitive term matching is non-deterministic at times. http://www.w3.org/2010/02/rdfa/track/issues/63 This issue concerns how case-insensitive term matching is implemented in RDFa Processors. That is, given two term mappings, "Agent" and "agent", which one will be picked in the case of the following markup? typeof="agENT" The previous answer was that the behavior was non-deterministic. After consideration by the RDFa Working Group, we decided that enforcing a deterministic search algorithm could impact implementation performance and create unnecessary complexity for a case where it is unknown whether the author meant to type "Agent" or "agent". That is, even if we were to be deterministic on what was picked, the result may still be wrong based on the authors original intent. You can read more about the discussion here: http://www.w3.org/2010/02/rdfa/meetings/2011-01-20#ISSUE__2d_63__3a__Case__2d_insensitive_term_matching and also here: http://www.w3.org/2010/02/rdfa/meetings/2011-02-01#ISSUE__2d_63__3a__Case__2d_insensitive_term_matching_is_non__2d_deterministic_at_times The RDFa Working Group determined that case-insensitive term matching for two terms that only differ in case, where an exact case-sensitive match isn't found, and where a case-insensitive search must be performed is still non-deterministic by design. Thank you for your participation in the Working Group, Toby, and your continued diligence and skill in finding issues like this in the technical implementation of these documents. Since this is a Last Call issue, we usually ask that you please respond to this e-mail. However, since we have you on record as agreeing to the change during the RDFa telecon, that is not necessary. We are closing this issue and marking it as resolved with the original submitter agreeing to the decision made by the RDFa Working Group. -- manu -- Manu Sporny (skype: msporny, twitter: manusporny) President/CEO - Digital Bazaar, Inc. blog: Towards Universal Web Commerce http://digitalbazaar.com/2011/01/31/web-commerce/
Received on Sunday, 6 February 2011 19:36:24 UTC