[Scip] Heuristic parameters not recognized

[Gregor Hendel]

Hi Andrea,

since you mentioned you use the SCIP callable library, you can simply 
use the method

SCIPsetHeuristics(scip, SCIP_PARAMSETTING_OFF, TRUE)

in order to deactivate all heuristics. This approach has the advantage 
that in future releases, there are going to be new heuristics that you 
need not manually deactivate inside your application code again whenever 
you switch to a newer version.

No matter whether you use the emphasis approach or manually turn them 
off, make sure you access the parameters after
you included the default plugins of SCIP via 
SCIPincludeDefaultPlugins(scip), because otherwise, the parameters 
indeed do not exist yet.

Hope this helps,

kind regards
Gregor

Am 21.10.2014 um 00:54 schrieb michael.winkler at zib.de:
> Hi,
>
> Ambros is right, you need to add "/freq" but still it should be
>
> "heuristics/oneopt/freq = -1" or
> "heuristics/simplerounding/freq = -1"
>
> "heuristics/oneopt/simplerounding/" should not exist, also it should not
> be printed when disabling all heuristics. Can you check your output again.
>
> Best, Micha
>
>> Hi Andrea,
>>
>> you were missing the /freq, e.g., "heuristics/oneopt/simplerounding/freq
>> = -1".
>>
>> Best regards,
>> Ambros
>>
>>
>> Am 20.10.2014 um 23:14 schrieb Andrea Taverna:
>>> Hello everyone,
>>>
>>> I'm using SCIP 3.1.0 callable library for a column generation algorithm
>>> and I would like to disable all the primal heuristics.
>>>
>>> I tried writing something like "heuristics/oneopt/simplerounding = -1"
>>> in the scip parameter file, which I've been successfully using before
>>> for other parameters, but SCIP complains that the parameters , e.g.
>>> heuristics/oneopt/simplerounding, do not exist.
>>>
>>> The heuristic parameters are copy-pasted from the output of SCIP command
>>> "set heuristics emphasis off". I'm pretty sure they're written
>>> correctly.
>>>
>>> What I am missing?
>>>
>>> TIA
>>>
>>> Andrea Taverna
>>> _______________________________________________
>>> Scip mailing list
>>> Scip at zib.de
>>> http://listserv.zib.de/mailman/listinfo/scip
>> --
>> ____________________________________________________________
>> Ambros M. Gleixner
>> Zuse Institute Berlin - Matheon - Berlin Mathematical School
>> http://www.zib.de/gleixner
>> _______________________________________________
>> Scip mailing list
>> Scip at zib.de
>> http://listserv.zib.de/mailman/listinfo/scip
>>
>
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