[rules-users] rule algorithm

Hallo Edson, thanks for the quick answer. Where can I find the configuration file where I have to define the ne accumulate function: drools.accumulate.function.calculateCertainty = org.drools.base.accumulators.NewAccumulateFunction regards Thomas Or an accumulate function (as long as all you objects implement a commong interface): rule "overall certainty" when $cert : Number() from accumulate( $f : CertaintyFacts( ), overallCertainty( $f ) ) then // do something with $cert end Implement your own formula inside overallCertainty function . []s Edson