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RE: [ontac-forum] Universal Data Element Framework (UDEF) question

To: "ONTAC-WG General Discussion" <ontac-forum@xxxxxxxxxxxxxx>, <ron.l.schuldt@xxxxxxxx>
From: "Arsic, Antoinette" <aarsic@xxxxxxxxx>
Date: Tue, 6 Dec 2005 20:45:10 -0500
Message-id: <8D27E2CDAF11D34F97E7445BCCCDB92C7C37C9@xxxxxxxxxxxxxxxxx>
I think the DoD Core Taxonomy (Focus Group) went through a lot of the same. It is now part of the Taxonomy Gallery in the Dod XML Metadata Registry.  We went from
Action Documentation Location Purpose
Activity Event Media Resource
Agreement Feature Organization Role
Capability Guidance Person Situation
Communication Information Property Structure
Account Asset Guidance Person     Environment
Action Capability Interval Location     Event
Agreement Function Organization Role
Development resources we used consisted of or included:
CIM Data Buckets       Activity Models        Word Net         DoD Publications
CJCS Publications       COI Taxonomies      Dictionaries            Professional Groups
Data Models       Open Cyc         On-line Sources     And Various Others
Antoinette Arsic
Sr. Information Systems Engineer
The MITRE Corporation
703-337-9016 (VOIP)
*703-983-5286 (new office number, was 883)
*443-567-2703 (new cell)

From: ontac-forum-bounces@xxxxxxxxxxxxxx [mailto:ontac-forum-bounces@xxxxxxxxxxxxxx] On Behalf Of Gary Berg-Cross
Sent: Tuesday, December 06, 2005 4:04 PM
To: ontac-forum@xxxxxxxxxxxxxx
Cc: ron.l.schuldt@xxxxxxxx
Subject: [ontac-forum] Universal Data Element Framework (UDEF) question

 I attended the Expedition Workshop on Advancing Information Sharing And Data Architecture today (12/06).


I had a question which there wasn’t time to pose, on the Universal Data Element Framework (UDEF) briefing by Ron Schuldt and so I thought I might post it to Ron as well as here.


See http://colab.cim3.net/file/work/Expedition_Workshop/2005-12-06_Advancing_Information_Sharing_And_Data_Architecture/UDEF-DNS-6Dec2005.ppt


These have probably been discussed by discussed by the UDEF folks and might persue it on the ontac forum if others have a position on it.


Essentially the question concerns issues with the UDEF “Semantics” which seems to be based on a fixed set of  17 Class categories that are decomposable into sub-classes. Taxonomies provide weak semantics but beyond this there seems to be a real problem with this partially fixed class structure. UDEF assigns a 3 part number (object class #, object/term # and property of term #).  The first part of the number is based on the object classification and therefore part of it is fixed by the 17 top level classes that UDEF proposes (listed below) and whatever sub-classes people come up with.


UDEF Object

Class List




















So if either the top level classes or how you sub-class thing change the “semantics” change and therefore the number would have to change. How does UDEF propose to handle this?


Looking at the classes I could see major issues off the top.  For example, I wonder why Document or Plant is not an Entity or where medical diagnosis might be in this hierarchy? 


So taken as a whole I see an issue with the semantics of the approach.  If UDEF is to be effective it seems to me that its approach to semantics will have to be richer.  The triplet might be a nice way to label an ontology, but now it just does a taxonomic portion and might have to be redesigned to provide labels for ontology "nodes"....






 Gary Berg-Cross


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