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AW: [Help-glpk] Re: How to make consecutive variables take a certain val


From: Gottfried Lindner
Subject: AW: [Help-glpk] Re: How to make consecutive variables take a certain value?
Date: Mon, 3 Dec 2007 09:45:13 +0100

Is it possible to think of a cutting stock problem with day+room as a stock
of a certain length (in hours) and cutting it into lessons with different
lengths?

Regards

Gottfried Lindner
 

-----Urspr√ľngliche Nachricht-----
Von: address@hidden
[mailto:address@hidden Im Auftrag von
ican.ozgur
Gesendet: Montag, 3. Dezember 2007 08:25
An: Michael Hennebry
Cc: glpk
Betreff: [Help-glpk] Re: How to make consecutive variables take a certain
value?

On Friday 30 November 2007 18:37:31 Michael Hennebry wrote:
> Probably what you want are binaries based on start times.
> You don't need to explicitly mark every period of a class.
OK i understand it. But the question now is how to implement a constraint
that 
if an hour is marked as a start time of a session  it is impossible to mark 
as a start time of another session following [sessions's duration - 1 ] 
hours.


-- 
O. Ican


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