10:18 a.m.
The AgendaFilter you propose is bound to cause problems if rules
are intended to fire repeatedly. I have a demo consisting of a single rule,
to be fired many times with varying data; certain patterns are bound
to occur again. Adding the proposed agenda filter produces an
incorrect result.
Also note the statistics:
3906 activations were encountered (Set.count() at the end)
3593 activations remain in the List at the end of the run
313 activations were skipped due to the filter.
The number of remaining activations is an strong indication
that this approach may result in a memory leak.
-W
On 22/01/2013, magaram <magaram(a)deltadentalmi.com> wrote:
Thanks for pointing me to the post Davide.
>From a performance perspective I agree there are concerns. I have provided
some numbers of what I saw
for situations firing several rules over several tuples at the end of this
post -
However, I ran some self loop and complex loop scenarios through this
approach and they seemed to hold. Can you elaborate on why this does not
solve the refraction scenario?
The way I understand refraction is -
This term comes from the neurobiological observation of a refractory
period for a neuron, which means that the neuron is not able to fire
immediately without first going through a relaxation process. In a
similar way, OPS5 will not allow the same instantiation in the conflict
set from firing twice in a row. This prevents the inference engine from
entering into an infinite loop.
I was reading through apost from Mark Proctor on this when I had the idea
of investigating this approach.
http://blog.athico.com/2010/07/slot-specific-and-refraction.html
----------Log snip starts -----------------------
<21 Jan 17:23:45> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Creating KnowledgeBuilder] = 2
<21 Jan 17:23:46> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Loading DROOLS ruleset into KnowledgeBuilder] =
809
<21 Jan 17:23:46> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Creating Knowledgebase] = 1
<21 Jan 17:23:46> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Loading KnowledgeBase with KnowledgePackages from
KnowledgeBuilder] = 110
<21 Jan 17:23:46> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Creating StatefulKnowledgeSession for
KnowledgeBase] = 0
<21 Jan 17:23:46> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Asserting Facts into StatefulKnowledgeSession] =
24
Encountered activation [Activation rule=BORA00105, act#=4,
salience=9998978,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:43:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00105, act#=4, salience=9998978,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:43:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00110, act#=5,
salience=9998975,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:43:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00110, act#=5, salience=9998975,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:43:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00115, act#=9,
salience=9998973,
tuple=[fact 0:8:11412609:2335260:8:null:[Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:43:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00115, act#=9, salience=9998973,
tuple=[fact 0:8:11412609:2335260:8:null:[Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:43:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00105, act#=4,
salience=9998978,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00105, act#=4, salience=9998978,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00110, act#=5,
salience=9998975,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00110, act#=5, salience=9998975,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00115, act#=9,
salience=9998973,
tuple=[fact 0:8:11412609:2335260:8:null:[Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00115, act#=9, salience=9998973,
tuple=[fact 0:8:11412609:2335260:8:null:[Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00135, act#=6,
salience=9998969,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00135, act#=6, salience=9998969,
tuple=[fact 0:33:2335229:2335229:33:DEFAULT:Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00140, act#=8,
salience=9998968,
tuple=[fact 0:11:10123092:2335260:11:null:[Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00140, act#=8, salience=9998968,
tuple=[fact 0:11:10123092:2335260:11:null:[Oid = 15661383, Adj ReasonAdd,
Adjusted BC Oid = 8150302]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00205, act#=11,
salience=9998965, tuple=[fact 0:37:9594878:9594878:37:DEFAULT:Oid =
15661382, Adj ReasonTerm, Adjusted BC Oid = 8150309]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00205, act#=11, salience=9998965,
tuple=[fact 0:37:9594878:9594878:37:DEFAULT:Oid = 15661382, Adj ReasonTerm,
Adjusted BC Oid = 8150309]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00210, act#=12,
salience=9998962, tuple=[fact 0:37:9594878:9594878:37:DEFAULT:Oid =
15661382, Adj ReasonTerm, Adjusted BC Oid = 8150309]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00210, act#=12, salience=9998962,
tuple=[fact 0:37:9594878:9594878:37:DEFAULT:Oid = 15661382, Adj ReasonTerm,
Adjusted BC Oid = 8150309]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Encountered activation [Activation rule=BORA00215, act#=17,
salience=9998960, tuple=[fact 0:12:17846274:9594909:12:null:[Oid =
15661382,
Adj ReasonTerm, Adjusted BC Oid = 8150309]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
Removing activation[Activation rule=BORA00215, act#=17, salience=9998960,
tuple=[fact 0:12:17846274:9594909:12:null:[Oid = 15661382, Adj ReasonTerm,
Adjusted BC Oid = 8150309]]
[fact 0:2:881692:881692:2:DEFAULT:Oid= 8150317, BPSD = 03/01/2009, BPED =
03/31/2009, RD = 02/26/2009]
[fact
0:3:21094514:21094514:45:DEFAULT:com.deltadental.billing.output.rules.BillingOutputRuleContext@141e072]
]
<21 Jan 17:23:46> <INFO>
<com.deltadental.claims.rules.engine.RuleEngine>
Time taken for operation [Firing rules in StatefulKnowledgeSession] = 24
--
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