[Os-project-managers] More schema troubles!

Kipp Martin kmartin at chicagobooth.edu
Sun Nov 21 20:24:40 EST 2010


Hi Gus:

> more trouble...
> 
>  In OSoL we give the initial variable values in the form
> 
> <var idx="..." value="..."/>
> 
> where "value" is an *optional* attribute, with*out* a default value. 
> This makes very little sense. In OSrL we use the form
> 
> <var idx="...">...</var>
> 
> which is a little more sensible, but it does not allow us to compress 
> repeated values (such as for a zero-one program). I think we should use 
> the same form for both schemas, and we should at least allow the 
> possibility of an IntVector to compress repeated values. (Unfortunately, 
> this is a 3.0 issue...)
> 
> Do you guys agree?

I agree that:

1) we should be consistent,

2) allowing repeated values is good,

3) we are looking at OS 3.0


That said, I am a little bit worried about our users such as the GAMS 
folks. We are going to break things for them.

-- 
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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