[Scip] Question about SCIP

[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.