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Re: Problem for mathematically minded XML experts

  • From: MURATA Makoto <murata.makoto@f...>
  • To: xml-dev@i...
  • Date: Mon, 06 Dec 1999 11:20:31 +0900

researchtriangle
>I would like to pose the following question to those of you with a
>mathematical bent who have some spare time (I'm not expecting the answer
>quickly - this is a holiday teaser I suspect!).

I gave a talk at XTech'99 on automatic construction of 
intersection/union/difference of schemata (or DTDs).  I even demonstrated 
my prototypical implementation.

>is there a formula that can be used to determine whether the same pair of
>elements are valid in both DTD1 and DTD2? If there is, is there a way to
>determine the difference caused by the following conditions being added:

If the intersection of two schemata (or DTDs) is not empty, there exists 
such elements.

My slides and annotated log file of my demonstration are available at:

	http://www.geocities.com/ResearchTriangle/Lab/6259/XTech99/index.htm

You might want to retrieve this single file which contains all HTML pages 
and image files.

	http://www.geocities.com/ResearchTriangle/Lab/6259/XTech99/xtech99.zip

An introduction to hedge automata is available at:

	ttp://www.geocities.com/ResearchTriangle/Lab/6259/hedge_nice.pdf

Makoto
 
Fuji Xerox Information Systems
 
Tel: +81-44-812-7230   Fax: +81-44-812-7231
E-mail: murata.makoto@f...

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