[SCIP] Default Plugins - branch&price

[Schrotenboer, A.H.]

Dear Benny,

I already gave it the highest priority, but i coincidentally just found
what was wrong in my implementation. I simply copied parameter settings
from one of the examples, which has a 'maxbounddist'  of 0.0, meaning that
the branching rule is only used at the best node in the b&b tree.
Nevertheless, thank you for your reply.

Albert

On Mon, Nov 7, 2016 at 11:46 AM, Benjamin Müller <benjamin.mueller at zib.de>
wrote:

> Dear Albert,
>
> did you include your plug-ins by using the corresponding include function
> (SCIPincludeObjBranchrule)? If you just want to use your branching rule you
> need to give it the highest priority.
>
> Alternatively, you can remove SCIPincludeDefaultPlugins and explicitly
> include only the plug-ins you want to use. Note that you need to have at
> least one node selector.
>
> Regards,
> Benny
>
>
> On 11/07/2016 09:09 AM, Schrotenboer, A.H. wrote:
>
>> Dear all,
>>
>> For implementing my own branch and price algorithm i used the c++
>> wrapper classes of SCIP. I devised my own branching rules, constraint
>> handlers, pricers etc.  I included the defaultplugins by calling:
>>       SCIP_CALL(SCIPincludeDefaultPlugins(scip));
>>
>>
>> If I run my code, at some point SCIP is making branching decisions,
>> without calling my own branching rules. I suspect that it has to do with
>> separation or heuristic procedures included in the default plugins.
>> Nevertheless, i would like to NOT include those procedures in my program
>> (at least not at this point). So, The only thing i want SCIP to do is
>> branching according to my branching rules, and solving the pricing
>> problems in each node.
>>
>> Without going through 1500 parameters, is there an easy way to achieve
>> this, i.e.,  to not include those procedures that cause branching that
>> don't use my own branching rules?
>>
>> Kind regards,
>>
>> Albert
>>
>>
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>>
>>
> --
> ______________________________
> Benjamin Müller
> Zuse Institute Berlin
> Takustr. 7, 14195 Berlin
> benjamin.mueller at zib.de
> +49 30 841 85-195
>
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