- From: Ian Horrocks <ian.horrocks@comlab.ox.ac.uk>
- Date: Wed, 3 Jun 2009 19:34:02 +0100
- To: www-xml-schema-comments@w3.org
- Cc: W3C OWL Working Group <public-owl-wg@w3.org>
Dear XML Schema Working Group, I thought that it might be interesting and/or useful for you to know that in the OWL 2 ontology language specification we are making extensive use of XSD 1.1 datatypes (see, e.g., [1]), and that there are already successful implementations of OWL tools that support many of these datatypes (see, e.g., [2]). For our purposes we found the XSD 1.1 specification to be a significant improvement and to offer important advantages w.r.t. XSD 1.0 version. These advantages include: * Generally much improved clarity and precision; * Clear separation between equality and identity; * Precise definitions of various operations, such as the lexical-to-value mappings for a number of datatypes, and operations on data values. Thanks for all your hard work, and for your timely and helpful responses to our various comments and queries; we we hope to see XSD 1.1 make rapid progress to Recommendation. Regards, Ian Horrocks W3C OWL Working Group co-Chair [1] http://www.w3.org/TR/2009/WD-owl2-syntax-20090421/#Datatype_Maps [2] http://www.w3.org/2007/OWL/wiki/Implementations
Received on Wednesday, 3 June 2009 18:34:42 UTC