Choosing Which Rules To Evaluate
Production systems may also differ in the final selection of production rules to execute, or fire . The collection of rules resulting from the previous matching algorithm is called the conflict set, and the selection process is also called a conflict resolution strategy .
Here again, such strategies may vary from the simple—use the order in which production rules were written; assign weights or priorities to production rules and sort the conflict set accordingly—to the complex—sort the conflict set according to the times at which production rules were previously fired; or according to the extent of the modifications induced by their RHSs. Whichever conflict resolution strategy is implemented, the method is indeed crucial to the efficiency and correctness of the production system.
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