[Scip] Problem Variables, parameters & resolving issue

Mehmet Pancaroğlu mpancar at metu.edu.tr
Sun Jan 18 20:34:51 CET 2015


Hi everyone,

I want to add to my friend's last question: When we add previously 
generated columns with SCIPcreateVar() we find more columns. When 
SCIPcreateVarBasic() is used, it decreases..
On 17-01-2015 00:11, M. Farham wrote:
> Hi everyone,
>
> In statistics, there is a Pricers section under which there are 
> 'problem variables' and 'myPricer'. Sometimes there are some variables 
> created by problem variables. I wonder what problem variables indicates.
>
> I also want to ask what do the following parameters do?
> "pricing/maxvars = 100
> pricing/maxvarsroot = 2000"
>
> My last question: when I solve a problem and generate variables with 
> my pricer, I record them. When I add them to problem before solving it 
> again, I am expecting not to find any other new variable. Actually, I 
> find new ones and it can take more time to solve the problem. I do not 
> figure out the reason. In statistics, I see the number of new added 
> columns in my pricer. In problem variables, I see a value much more 
> than the columns I introduced. Is there any reason behind that?
>
> Thanks in advance
>
>
>
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