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., ), and that there
are already successful implementations of OWL tools that support many
of these datatypes (see, e.g., ).
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.
W3C OWL Working Group co-Chair