[jboss-jira] [JBoss JIRA] (JBRULES-3555) Allow to specify a relative value for the entity tabu

[Geoffrey De Smet (JIRA)]

    [ https://issues.jboss.org/browse/JBRULES-3555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12703106#comment-12703106 ] 

Geoffrey De Smet commented on JBRULES-3555:
-------------------------------------------

Pull requests welcome :) Shouldn't take long to implement in AcceptorConfig and SolutionDescriptor: the bulk of the work is experimentation and naming design.
                
> Allow to specify a relative value for the entity tabu
> -----------------------------------------------------
>
>                 Key: JBRULES-3555
>                 URL: https://issues.jboss.org/browse/JBRULES-3555
>             Project: Drools
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: drools-planner
>    Affects Versions: 5.5.0.Beta1
>            Reporter: Lukáš Petrovický
>            Assignee: Geoffrey De Smet
>
> Problems such as the RAS2012 challenge require us to provide a solution for problems of varying size - the number of entities in the various cases ranges from 3 to 30.
> In this case, it is nearly impossible to benchmark all those problems at once using the planning entity tabu. When you specify a tabu size larger than the number of entities, no solutions are accepted and thus the benchmark is useless.
> What I propose is to implement a planning entity tabu size that accepts the two different values:
> - Negative number. That would mean that the tabu would be ($size = $totalNumberOfEntities - $specifiedNumber).
> - Percentage. That would mean that the tabu would be ($size = Math.round($percentage * $totalNumberOfEntities)).
> In both cases, 0 < $size < $totalNumberOfEntities. This way, the planning entity tabu size will become universally usable.

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