April 17, 2001

Attendees:
Pat
Mike
Ian
Frank
Ora
Peter
Deb
Dan C (joined late)
Stefan (joined late)


Announcements:
Last week minutes approved


Agenda:
Stephan: Lite version -- not here as of yet

Pat comments on tagging:
    Comments from IEEE people?
    1. separating namespaces
    2. importing chunks of one ontology into another (via uri?)

    Will pass on the emails that are relevant ...

Issues with lite version:
       What makes it easier?
       What characteristics should the end version have?  

Talk about RDF Schema and wether it is hard or easy ...

What characteristics do we want for DAML+OIL Lite?
     Cannonical model?
     

There is always a learning curve, so why not make it easier by
      providing a halfway (lite version).  Response: Why not spend the
      time on polishing the language we have instead of creating
      something half the size ...


Possible niches for daml lite
	 Easier to implement a reasoner
	 Wether its complexity is high or low
	 Conceptual complexity (how hard to use it)

Stefan's comments:
	Easy to implement
	Easy to build software for ...

What features do they want? 
     Direct subClass relationship	
     Restrictions (type restrictions on slots?)
     Data types

Mike: Easier to build up from RDFSchema rather than building down from
      DAML+OIL?


Give me interesting characteristics of sub languages:

Mike: Perhaps we should have our standard DAML+OIL be the "lite"
      version and have a super language for the people who want more.
      This keeps people from having to say I only support the "lite"
      version.


Have we been telling people that to be "daml+oil" you have to use ALL
     of DAML+OIL.  Or that they have to make Reasoners?  These are not
     true and perhaps we need to change our marketing :)

Deb will send referrences to some papers we might be interested.
    http://www.ksl.stanford.edu/people/dlm/publications.html
    --does have a postscript version of the usability paper. 
    http://www.research.att.com/~dlm/papers/usability-final.ps
    --direct url


For next week:  
    What imports mean. 
    Peter will be gone from meeting next week.