Op 25-01-13 14:26, Michiel Vermandel
schreef:
Hi,
I noticed
something really strange in my trace logging: certain
moves are made multiple times, even consecutive.
How is this possible?
I am using Planner 5.5.0.Final and no custom move
factories (see config below).
TRACE: [2013-01-25 14:12:28,309] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (12), score (-515hard/0soft),
accepted (true) for move ({T= Inspect B747-AX1.I#1
[7->7] Jesse IV} => (P4) ).
TRACE: [2013-01-25 14:12:28,309] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Ignoring not doable move ({T= Inspect A380-TR1.I#0
[5->6] Kristof IV} => IV).
TRACE: [2013-01-25 14:12:28,310] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (14), score (-2090hard/0soft), accepted
(true) for move ({T= Inspect A380-TR1.I#1 [5->6] Gerald IV}
=> (P9) ).
TRACE: [2013-01-25 14:12:28,310] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Ignoring not doable move ({T= Inspect A320-CZ4.I#0
[7->9] Kristof IV} => IV).
TRACE: [2013-01-25 14:12:28,310] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Ignoring not doable move ({T= Inspect A380-TR1.I#1
[5->6] Gerald IV} => IV).
TRACE: [2013-01-25 14:12:28,311] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (17), score (-230hard/0soft), accepted
(true) for move ({T= Inspect B747-AX1.I#1 [7->7] Jesse IV}
=> Andy).
TRACE: [2013-01-25 14:12:28,312] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (18), score (-120hard/0soft),
accepted (true) for move ({T= Inspect B747-AX1.I#0
[5->5] Andy IV} => (P7) ).
TRACE: [2013-01-25 14:12:28,313] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (19), score (-120hard/0soft),
accepted (true) for move ({T= Inspect B747-AX1.I#0
[5->5] Andy IV} => (P7) ).
"Just in time random selection" could explain this behavior. Read
this section:
https://jenkins.mw.lab.eng.bos.redhat.com/hudson/view/Drools%20jBPM/view/Master/job/drools-planner/lastSuccessfulBuild/artifact/drools-planner-docs/target/docbook/publish/en-US/html_single/index.html#d0e5069
"selectionOrder RANDOM (default): Select the selections (
Move
s, entities, values, ...) in
non-shuffled random order.
A selection might be selected
multiple times. This scales up well in performance because it
does not require caching."
It's very unlikely that this happens, except for toy problems. How
many entities and variables does this dataset have?
Switch to "Cached shuffled selection" to avoid it. Read those docs
to understand the trade-off.
TRACE: [2013-01-25
14:12:28,313] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (20), score (-30hard/0soft), accepted
(true) for move ({T= Inspect B747-AX1.I#1 [7->7] Jesse IV}
=> TL).
TRACE: [2013-01-25 14:12:28,315] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (21), score (-2180hard/0soft), accepted
(true) for move ({T= Inspect B747-AX1.I#0 [5->5] Andy IV}
=> (P1) ).
TRACE: [2013-01-25 14:12:28,316] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (22), score (-515hard/0soft),
accepted (true) for move ({T= Inspect B747-AX1.I#1
[7->7] Jesse IV} => (P4) ).
TRACE: [2013-01-25 14:12:28,317] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (23), score (-515hard/0soft),
accepted (true) for move ({T= Inspect B747-AX1.I#1
[7->7] Jesse IV} => (P4) ).
TRACE: [2013-01-25 14:12:28,318] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (24), score (-3180hard/0soft), accepted
(true) for move ({T= Inspect A320-CZ4.I#1 [7->8] Andy IV}
=> (P1) ).
TRACE: [2013-01-25 14:12:28,318] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Ignoring not doable move ({T= Inspect B747-AX1.I#1
[7->7] Jesse IV} => IV).
TRACE: [2013-01-25 14:12:28,320] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (26), score (-120hard/0soft), accepted
(true) for move ({T= Inspect B747-AX1.I#1 [7->7] Jesse IV}
=> (P5) ).
TRACE: [2013-01-25 14:12:28,322] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (27), score (-45hard/0soft), accepted
(true) for move ({T= Inspect B747-AX1.I#1 [7->7] Jesse IV}
=> (P8) ).
TRACE: [2013-01-25 14:12:28,323] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (28), score (-30hard/0soft), accepted
(true) for move ({T= Inspect A380-TR1.I#0 [5->6] Kristof
IV} => TL).
TRACE: [2013-01-25 14:12:28,324] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (29), score (-2635hard/0soft), accepted
(true) for move ({T= Inspect A320-CZ4.I#1 [7->8] Andy IV}
=> (P2) ).
TRACE: [2013-01-25 14:12:28,325] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (30), score (-650hard/0soft), accepted
(true) for move ({T= Inspect A320-CZ4.I#0 [7->9] Kristof
IV} => (P6) ).
TRACE: [2013-01-25 14:12:28,334] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Ignoring not doable move ({T= Inspect A380-TR1.I#2
[5->6] Jesse IV} => Jesse).
TRACE: [2013-01-25 14:12:28,335] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (32), score (-230hard/0soft), accepted
(true) for move ({T= Inspect B747-AX1.I#0 [5->5] Andy IV}
=> Gerald).
TRACE: [2013-01-25 14:12:28,336] main
org.drools.planner.core.localsearch.decider.DefaultDecider
- Move index (33), score (-515hard/0soft),
accepted (true) for move ({T= Inspect B747-AX1.I#1
[7->7] Jesse IV} => (P4) ).
Config:
<?xml version="1.0" encoding="UTF-8"?>
<solver>
<environmentMode>DEBUG</environmentMode>
<!-- Domain model configuration -->
<solutionClass>be.axi.planner.app.InspectionSchedule</solutionClass>
<planningEntityClass>be.axi.planner.domain.Task</planningEntityClass>
<!-- Score configuration -->
<scoreDirectorFactory>
<scoreDefinitionType>HARD_AND_SOFT</scoreDefinitionType>
<scoreDrl>/inspectionRules.drl</scoreDrl>
</scoreDirectorFactory>
<constructionHeuristic>
<constructionHeuristicType>BEST_FIT_DECREASING</constructionHeuristicType>
<constructionHeuristicPickEarlyType>FIRST_LAST_STEP_SCORE_EQUAL_OR_IMPROVING</constructionHeuristicPickEarlyType>
</constructionHeuristic>
<!--customSolverPhase>
<customSolverPhaseCommandClass>be.axi.planner.solution.SolutionInitializer</customSolverPhaseCommandClass>
</customSolverPhase-->
<localSearch>
<termination>
<terminationCompositionStyle>OR</terminationCompositionStyle>
<maximumSecondsSpend>3600</maximumSecondsSpend>
<scoreAttained>0hard/0soft</scoreAttained>
</termination>
<unionMoveSelector>
<changeMoveSelector>
<valueSelector>
<planningVariableName>type</planningVariableName>
</valueSelector>
</changeMoveSelector>
<changeMoveSelector>
<valueSelector>
<planningVariableName>spector</planningVariableName>
</valueSelector>
</changeMoveSelector>
<changeMoveSelector>
<valueSelector>
<planningVariableName>period</planningVariableName>
</valueSelector>
</changeMoveSelector>
</unionMoveSelector>
<acceptor>
<planningEntityTabuSize>7</planningEntityTabuSize>
</acceptor>
<forager>
<minimalAcceptedSelection>1000</minimalAcceptedSelection>
</forager>
</localSearch>
</solver>
Thanks,
Michiel
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users