I'm working on a model as follows (attachment). Thinking in the cutting stock problem in c + + (*Problem:* http://www.cs.cornell.edu/w8/iisi/ilog/cplex100/usrcplex/usingColumnGen4.html and *Code:*http://www-01.ibm.com/support/docview.wss?uid=swg21399997&aid=1). As could add the constraint number 3 to the model?
I appreciate your help,
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1 reply Latest Post - 2013-02-07T04:29:35Z by SystemAdmin
Pinned topic Problem with constraint in Column generation
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Updated on 2013-02-07T04:29:35Z at 2013-02-07T04:29:35Z by SystemAdmin
SystemAdmin 110000D4XK7929 PostsACCEPTED ANSWER
Re: Problem with constraint in Column generation2013-02-07T04:29:35Z in response to SystemAdminSorry, model description:
- Is a formulation: Colunas Generation
- The decision variable is "x", is greater than zero if the column is considered in the solution
- Restriction 2 ensures that every customer is satisfied
- Restriction 3 limits the number of vehicles in the solution
Assumed that as the price is generating new columns moves, this causes increase in the column space... I need to clean the model and load the columns encountered when applying this restriction (number of columns = K)? ... as should define this set of restrictions to the number of vehicles?
I appreciate your help, I implemented ideas without good results