What pattern/patterns work best for developing rule/decision engine [closed]

Answer 1

Basically business rules look like

forall rules:
  if  then doAction();

What about categorizing all offences by severity using scores, perhaps extra bonus for frequent "evil-doers", some offences may become time-barred and whatever required.

Then a rough draft of an algorithm could be:

• Sum of all scores of a customer (weighted)
• compare to maximum

This would be straight forward using data structures instead of many (possibly deeply nested) if..then..else things.