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Perhaps the WG has already considered this, but if not, might I suggest using an optional URI to identify stemming algorithms? [170] "stemming" URILiteral? | ("no" "stemming") e.g. for $b in /books/book where $b/title contains text ("dog" using stemming "http://www.example.org/porter") ftand "cat" return $b/author where the URI literals recognised by an implementation would be implementation defined. While the option extension syntax would allow an implementation to do something similar, since stemming is already part of the specification it would be useful to have this standardised.
Tim, The XQuery and XSL Working Groups considered your proposal for additional stemming functionality at today's meeting. There was support for it. We agreed to consider it in the next version -- XQuery/XPath Full Text 1.1. Thanks for the proposal. Pat Case, Library of Congress, for the XQuery Working Group