[Scip] Question about SCIP

[Thorsten Koch]

Hi Phuong,

have a look here

http://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/1462

Best regards,
Thorsten

Am 16.06.2013 21:03, schrieb Gregor Hendel:
> Hi Phuong,
> 
> there are some ways to get started with SCIP. Unfortunately, I am not an 
> expert in Steiner Tree formulations, I assume that your model involves 
> binary variables for every edge, and exponentially many constraints to 
> satisfy the connection requirements. You may want to generate and add a 
> set of constraints on the fly during solving, which is referred to as 
> "branch-and-cut" throughout the SCIP documentation:
> 
> http://scip.zib.de/doc/html/START.shtml
> 
> The TSP and the LOP example should contain most of the basic code for 
> your purpose. Follow the instructions and adapt the code to your data 
> representation.
> 
> Another way to surpass the gap between your data and a SCIP-readable 
> problem is the use of the ZIMPL modelling language which is part of the 
> SCIP Optimization Suite. You find its documentation here:
> http://zimpl.zib.de/
> 
> I hope this helps getting started.
> 
> Regards,
> Gregor
> 
> Am 15.06.2013 18:43, schrieb Phương Lê Thị Hồng:
>> Hello Mr. Hendel,
>>
>> My name is Phuong. This is the first time i learned SCIP software. So 
>> i have some trouble to read data from files. Could you help me for the 
>> code of reading data from some files not only one file? These files 
>> are about a graph, for instance data of Steiner Tree Packing Problem.
>>
>> Thank you very much.
>>
>>
>> Phuong.
> 
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-- 
The important thing is not to stop questioning.
Curiosity has its own reason for existing.          -- Albert Einstein
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Dr. Thorsten Koch / Konrad-Zuse-Zentrum für Informationstechnik Berlin
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