[rules-users] Planner/solver - POSITIVE scoring...

Hi All - FYI I have been conversing with Geoffrey on basic solver/planner usage questions, but we are bring the discussion here in case others can benefit. So I am looking at using IntConstraintOccurrence, for scoring with weights, and HardAndSoftConstraintScoreCalculator. So I can see how NEGATIVE_HARD and NEGATIVE_SOFT scores would work, with appropriate accumulator rules doing that etc. What I am not sure about is ConstraintType.POSITIVE - so I want to use that to "favour" certain aspects of a solution. So would the correct way to use that to be to have rules that use a positive IntConstrainOccurrence, and then do something like: when $softTotal : Number() from accumulate( IntConstraintOccurrence(constraintType == ConstraintType.NEGATIVE_SOFT, $weight : weight), sum($weight) // Vote for http://jira.jboss.com/jira/browse/JBRULES-1075 ); $positiveTotal: Number() from accumulate( IntConstraintOccurrence(constraintType == ConstraintType.POSITIVE, $weight : weight), sum($weight) // Vote for http://jira.jboss.com/jira/browse/JBRULES-1075 ); then scoreCalculator.setSoftConstraintsBroken($softTotal.intValue() - $positiveTotal.intValue()); ?? it seems odd - I want to use POSITIVE but I am using it to reduce the soft constraints broken? The the higher the positive score, the less softConstraintsBroken property of the score calculator is set - that seems odd... or should I not use HardAndSoft if I am using POSITIVE and NEGATIVE scoring? -- Michael D Neale home: www.michaelneale.net blog: michaelneale.blogspot.com