SYSTEM FOR CONTROLLING PRIORITY ORDER IN EXTRACTION OF RULE BASED ON NUMBER OF TIMES OF EXECUTION OF RULE

摘要

PURPOSE:To find conclusion as soon as possible by storing the number of times of execution of a rule and evaluating the rule starting from the one with the maximum number of execution of the rule. CONSTITUTION:A pointer update means 9 for rule control data sets a pointer 12 for the next rule control data in sequence from the rule with the maximum number 11 of execution of the rule to the one with the minimum number, and sets a pointer 3 for a leading rule control data at one of the rules with the maximum number 11 of execution of the rule. As a result, the pointers 12 for the rule control data 2 and the leading rule control data are set as shown in figure. Here, a rule fetching means 5 is called again, and the rules are fetched in sequence of the rule 2, the rule 4, the rule 1, and the rule 3 by the rule fetching means 5. By performing the inference of the same rule set for several times, the rule executed for the maximum times is evaluated and executed earlier. In such a way, it is possible to find the conclusion as soon as possible.