ASPN ActiveState Programmer Network
ActiveState
/ Home / Perl / PHP / Python / Tcl / XSLT /
/ Safari / My ASPN /
Cookbooks | Documentation | Mailing Lists | Modules | News Feeds | Products | User Groups


Recent Messages
List Archives
About the List
List Leaders
Subscription Options

View Subscriptions
Help

View by Topic
ActiveState
.NET Framework
Open Source
Perl
PHP
Python
Tcl
Web Services
XML & XSLT

View by Category
Database
General
SOAP
System Administration
Tools
User Interfaces
Web Programming
XML Programming


MyASPN >> Mail Archive >> xml-dev
xml-dev
RE: [xml-dev] ID/IDREF makes XML generation NP-hard
by Bullard, Claude L (Len) other posts by this author
Mar 28 2003 10:41PM messages near this date
Re: [xml-dev] If XML is too hard for a programmer, perhaps he'd b e better off as a crossing guard | Re: [xml-dev] ID/IDREF makes XML generation NP-hard
That's neat, Henry, and I don't mean to be mean-spirited, 
but is this a "so, but so what?" kind of thing to know? 

len

-----Original Message-----
From: ht@[...].uk [mailto:ht@[...].uk]

Somewhat surprisingly, it turns out that answering the question, for an
arbitrary XML DTD, "Are there any valid instances of the document type
defined by this DTD?", is an NP-hard problem.

-----------------------------------------------------------------
The xml-dev list is sponsored by XML.org <http://www.xml.org> , an
initiative of OASIS <http://www.oasis-open.org> 

The list archives are at http://lists.xml.org/archives/xml-dev/

To subscribe or unsubscribe from this list use the subscription
manager: <http://lists.xml.org/ob/adm.pl> 
Thread:
Bullard, Claude L (Len)
Henry S. Thompson

Privacy Policy | Email Opt-out | Feedback | Syndication
© ActiveState Software Inc. All rights reserved