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PODrools Planner: Planner not providing expected result based on Best Score
 

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  1. PODrools Planner: Planner not providing expected result based on Best Score
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    <p>I have tried posting on the user forum for Drools, but haven't been getting any responses (I am sure they are just busy), so I am hoping to attract a wider audience here.</p> <p>I am very confused by the results I am getting as they seem to not be providing me with the "best score". Here is some of the log output: </p> <pre><code>[construction steps] 2013-03-13 08:00:08,305 [com....] INFO Phase constructionHeuristic ended: step total (60), time spend (2222), best score (-200hard/-2780soft). [local search steps] 2013-03-13 08:00:21,807 [com....] INFO Phase localSearch ended: step total (42), time spend (15724), best score (0hard/-2495soft). 2013-03-13 08:00:21,807 [com....] INFO Solving ended: time spend (15724), best score (0hard/-2495soft), average calculate count per second (3748). </code></pre> <p>However, the results it gives me back contains a broken hard constraint (even though the log clearly states "Solving ended: time spend (15724), best score (0hard/-2495soft)") - it is giving me a result with score -200hard/-2495soft (which appears to be the hard score of the construction phase and the soft score of the local search phase). Is this how it is supposed to be? Did I miss something in the manual (I have read it, but I haven't digested it completely)? </p> <p>Here is most of my solver config (just the potentially relevant portion): </p> <pre><code>&lt;termination&gt; &lt;terminationCompositionStyle&gt;OR&lt;/terminationCompositionStyle&gt; &lt;maximumSecondsSpend&gt;60&lt;/maximumSecondsSpend&gt; &lt;scoreAttained&gt;0hard/0soft&lt;/scoreAttained&gt; &lt;/termination&gt; &lt;constructionHeuristic&gt; &lt;constructionHeuristicType&gt;FIRST_FIT_DECREASING&lt;/constructionHeuristicType&gt; &lt;constructionHeuristicPickEarlyType&gt;FIRST_LAST_STEP_SCORE_EQUAL_OR_IMPROVING&lt;/constructionHeuristicPickEarlyType&gt; &lt;/constructionHeuristic&gt; &lt;localSearch&gt; &lt;termination&gt; &lt;terminationCompositionStyle&gt;OR&lt;/terminationCompositionStyle&gt; &lt;maximumUnimprovedStepCount&gt;20&lt;/maximumUnimprovedStepCount&gt; &lt;scoreAttained&gt;0hard/0soft&lt;/scoreAttained&gt; &lt;/termination&gt; &lt;unionMoveSelector&gt; &lt;changeMoveSelector&gt; &lt;entitySelector&gt; &lt;entityFilterClass&gt;com.....RequiredTypeEntityFilter&lt;/entityFilterClass&gt; &lt;/entitySelector&gt; &lt;/changeMoveSelector&gt; &lt;swapMoveSelector&gt; &lt;entitySelector&gt; &lt;entityFilterClass&gt;com.....RequiredTypeEntityFilter&lt;/entityFilterClass&gt; &lt;/entitySelector&gt; &lt;/swapMoveSelector&gt; &lt;/unionMoveSelector&gt; &lt;acceptor&gt; &lt;solutionTabuSize&gt;1000&lt;/solutionTabuSize&gt; &lt;planningEntityTabuSize&gt;7&lt;/planningEntityTabuSize&gt; &lt;/acceptor&gt; &lt;forager&gt; &lt;minimalAcceptedSelection&gt;1000&lt;/minimalAcceptedSelection&gt; &lt;/forager&gt; &lt;/localSearch&gt; </code></pre> <p>Thanks in advance!</p> <p><strong>Edit</strong>: Here is a little more information that might be helpful... As stated above, it says my best (Hard) score is 0, but the solution it gives me contains a Hard constraint violation. I added some code to printout the constraints (using DroolsScoreDirector to get to the WorkingMemory and ultimately the ConstraintOccurrences)... this printout shows a hard constraint as well. </p> <pre><code>ConstraintType: NEGATIVE_HARD, RuleID: endLocationMustMatchStartLocation, Causes:... </code></pre>
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    1. USPaulP1975
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    1. COHere's the [related forum post](http://drools.46999.n3.nabble.com/Using-EntitySelector-EntityFilterClass-td4022770.html). Looks like it didn't come through on the mailing list, due the Nabble hoops. We 're looking to remove those hoops.
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      1. PODrools Planner: Planner not providing expected result based on Best Score
      1. USGeoffrey De Smet
 

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