[Cbc] Cbc fix variable

[John Forrest]

To do the fixing, I would try -

Write your own event handler - see some of the example driver programs.

With that you can look at solutions as they are generated (event 
solution) - when you want to start fixing variables then check event 
node - if node then use model_->solver()->setColUpper(column,0.0) for 
wanted columns.

Only problem is when variable has been branched to 1.0 - if so leave it 
for now - it would be easy to change code in CbcModel.cpp to mark as 
infeasible.

This should reduce search space.

John Forrest

On 20/07/14 04:45, sct wrote:
> Programmatically
>
> On 7/20/2014 9:57 AM, Haroldo Santos wrote:
>>
>> Programmatically or using the command line ?
>>
>> Em 19/07/2014 21:12, "sct" <see_chuenteck at yahoo.com.sg 
>> <mailto:see_chuenteck at yahoo.com.sg>> escreveu:
>>
>>     Hi,
>>
>>     After solving CBC for some iteration, if I am confident that some
>>     binary variables are definitely zero, how do it fix their values
>>     in CBC. The objective is to continue CBC with a reduced problem,
>>     so that it solves faster. Thanks a lot.
>>     _______________________________________________
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>>
>
>
>
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