Increasing Rule Efficiency

Following certain guidelines and evaluating the probability and cost of each rule can help increase rule performance and efficiency.

When designing rules, consider the following efficiency-related guidelines:

Keep rules simple.
The Structured Rule Language (SRL) is the language used to write rules. SRL supports the ability to nest if statements infinitely. However, rule intelligibility, maintainability, and extensibility decrease in direct proportion to the depth of a nested statement.
Rules should address a specific problem.
If a rule attempts to target too many types of potential fraud, the rule can create more cases and subsequently, more work for your analysts.
Rules are intended to augment the predictive fraud score, not replace it.
For maximum efficiency, assess the conditions and place the least likely event at the top of the rule.