[Os-project-managers] More schema issues

[Kipp Martin]

Hi Gus:

I don't see any problem with assuming that lower and upper bounds are 
real numbers. What would and upper and lower bound on a string even mean?

Cheers

>
> I just implemented the varType etc. attributes and am editing the
> parserTest files. In parserTest.osol I ran into further problems. In the
> OSoL schema the values in the <var>, <con> and <obj> elements are
> attributes (which is fine), but there are also "lbValue" and "ubValue"
> attributes to deal with. We do not have a way to attach a type to those.
>
> I cannot remember the reason why we chose to allow
>
> <other numberOfVar="1" name="slack" solver="mySolver"
> description="minimal distance from the bounds>
> <var lbValue="0.001" ubValue="0.002/>
> </other>
>
> instead of
>
> <other numberOfVar="1" name="lSlack" solver="mySolver"
> description="minimal distance from the lower bound>
> <var value="0.001"/>
> </other>
> <other numberOfVar="1" name="uSlack" solver="mySolver"
> description="minimal distance from the upper bound>
> <var value="0.001"/>
> </other>
>
> True, it is more compact, but do I now need to add further attributes
> "lbValueType" and "ubValueType"?
>
> Cheers
>
> gus
>
> -------------------------------------------------------"
>
> Horand I. Gassmann, Professor
>
> School of Business Administration, Dalhousie University
> 6100 University Avenue, PO Box 15000
> Halifax, Nova Scotia, Canada, B3H 4R2
> ph. (902) 494-1844
> fax (902) 494-1107
>
> http://myweb.dal.ca/gassmann
>


-- 
Kipp Martin
Professor of Operations Research
and Computing Technology
Booth School of Business
University of Chicago
5807 South Woodlawn Avenue
Chicago, IL 60637
773-702-7456
kmartin at chicagobooth.edu
http://www.chicagobooth.edu/faculty/bio.aspx?person_id=12825325568
http://projects.coin-or.org/OS

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