Issue 16934: Need Informal Definitions or Descriptions (dtv-rtf)
Source: International Business Machines (Mr. Mark H. Linehan, mlinehan(at)us.ibm.com)
Nature: Uncategorized Issue
Severity: 
Summary: Many Date Time Vocabulary concepts have very formal definitions that are hard for one of the target audiences – business users – to understand.  For example, the definition of the Allen Relationship 'time interval1 is properly before time interval2' reads:
Definition:	the time interval1 is before the time interval2 and the time interval1 is before a time interval3 and the time interval3 is before the time interval2

This formal definition provides a precise meaning for use by reasoning engines, but it takes even an expert human awhile to understand.  Business users have little chance of understanding it.  

The solution proposed by this Issue is that this and every other Date Time Vocabulary concept should have an informal definition or description that explains the concept to the business user audience.  Note that SBVR permits a concept to have multiple definitions, so adding informal definitions need not displace any existing formal definitions.

Resolution: The Date-Time FTF-2 added descriptions in some cases when applying other changes to the specification.  It did not have time to make a complete sweep through the document to add the requested documentation.  Since additional descriptions are just informative, they are not critical to the specification. Consequently, this issue is deferred.
Revised Text: 
Disposition:	Deferred

Revised Text: 
Actions taken:
December 29, 2011: received issue
April 1, 2013: transferred from FTF
Discussion: 




End of Annotations:=====
sposition:    ???   
	OMG Issue No:  ??? 
Title:	Need Informal Definitions	 or Descriptions
Source: Mark H. Linehan, mlinehan@us.ibm.com, IBM Research

Summary:
Many Date Time Vocabulary concepts have very formal definitions that are hard for one of the target audiences . business users . to understand.  For example, the definition of the Allen Relationship 'time interval1 is properly before time interval2' reads:
Definition:	the time interval1 is before the time interval2 and the time interval1 is before a time interval3 and the time interval3 is before the time interval2

This formal definition provides a precise meaning for use by reasoning engines, but it takes even an expert human awhile to understand.  Business users have little chance of understanding it.  

The solution proposed by this Issue is that this and every other Date Time Vocabulary concept should have an informal definition or description that explains the concept to the business user audience.  Note that SBVR permits a concept to have multiple definitions, so adding informal definitions need not displace any existing formal definitions.
Resolution:  
Revised Text: 
Disposition:	???