[rules-users] Difficulty determining why I have score corruption [Planner]

[Megan Woods]

Thanks Geoffrey and Wolfgang,

I will try what you suggested tomorrow morning.. (UTC + 11)

Cheers Megan Woods

Sent from my iPad

On Jan 9, 2013, at 20:06, "Geoffrey De Smet" <ge0ffrey.spam at gmail.com> wrote:

> 
> Op 09-01-13 01:00, megwoods schreef:
>> Hi,
>> 
>> I have been at this a couple of days now but I am getting score corruption
>> from a rule that does the following:
>> 
>> rule "to bigger gap"
>>     when
>>       $res: ResourceInstance()
>>       $resList : ArrayList(size > 1)
>>               from collect( TripAtTimeWithResource(resource  == $res) )
>>     then
>>      -- Sort the list using custom comparator.
>>      -- Measure a series of deltas between elements in the list.
>>      -- If the delta is larger than a threshold add a soft constraint.
> 1) Ideally, this logic would be in the "when" part.
> Not that that explains score corruption, but it should be faster 
> performance wise because it does better "incremental score calculation" 
> (see manual about that concept).
> 
> I would also expect that there is no "from collect", but a "from 
> accumulate" to detect the max or sum of the delta.
> 
> // quick pseudo code
> when
>   $res: ResourceInstance()
>   (intValue > deltaTreshold )from accumulate(
>       TripAtTimeWithResource(resource  == $res, $a : timeslot)
>       and TripAtTimeWithResource(resource  == $res, timeslot > $a, $b : 
> timeslot)
>       and not TripAtTimeWithResource(resource  == $res, timeslot > $a, 
> timeslot < $b),
>       max(... delta of $a and $b ...)
>   )
> then
> 
> 
> Addendum: If needed (because of performance reasons how from's currently 
> work),
> you might want split it up into 2 rules, similar as nurse rostering's 
> drl does regularly (with the Start and End logicalInserts), although 
> it's unlikely.
>>      insertLogical(new IntConstraintOccurrence("to bigger gap",
>> ConstraintType.NEGATIVE_SOFT,delta * 10, ttrL));
> 2) What's that cause ttrL? I would have expected $res as a cause?
>> 
>> end
>> 
>> The TripAtTimeWithResource is the planning entity.
>> 
>> I have checked the cloning and been through and checked that all equals and
>> hashcode methods and they are correct.
>> 
>> If I take this rule out the implementation functions as correctly.
>> 
>> Interestingly though I first prototyped this using a simple score and with
>> the same 'when' and 'then' clause (inserting a different fact) and no score
>> corruption was observed.
>> 
>> If anyone has any suggestions I would really like to hear from you.
>> 
>> Cheers Megan Woods
>> 
>> Extract from exception:
>> The workingMemory has 3 ConstraintOccurrence(s) in excess:
>>     to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 43b, resource=All(17), startTime=TimeUnit
>> [minute=285]]]=750
>>     to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 46c, resource=All(17), startTime=TimeUnit
>> [minute=75]]]=1700
>>     to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 421, resource=All(17), startTime=TimeUnit
>> [minute=75]]]=960
>>   The workingMemory has 4 ConstraintOccurrence(s) lacking:
>>     overlapping trips with same
>> resource/NEGATIVE_HARD:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 43b, resource=All(17), startTime=TimeUnit
>> [minute=285]]]=100
>>     to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 421, resource=All(17), startTime=TimeUnit
>> [minute=75]]]=1710
>>     to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 43b, resource=All(17), startTime=TimeUnit
>> [minute=285]]]=1650
>>     to bigger gap/NEGATIVE_SOFT:[TripAtTimeWithResource
>> [trip=a.c.t.p.p.m.TripInstance at 46c, resource=All(17), startTime=TimeUnit
>> [minute=75]]]=950
>> 
>> 
>> 
>> --
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