[Os-project-managers] More schema issues

[Horand Gassmann]

Kipp Martin <kmartin at chicagobooth.edu> wrote:

> 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?

I am not so sure. Remember, we are talking about an <other> result  
associated with the upper and lower bounds of a problem. This could  
equally well be a status of some kind, which could be an integer, or  
even an enumeration, that is, a string.

Cheers

gus

>> 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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> wireless device.
> -- 
>
>



-------------------------------------------------------

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/