For example, suppose that the goal is to conclude when to terminate a misbehaving employee, given that he has been late three times in the past month and has been employed less than 6 months, and that the rule base contains the following rules:
If employee is late more than twice in a given month and the employee is a probationary employee, Then terminate employment
If employee has been employed less than six months, Then employee is a probationary employee
This rulebase would be searched and the first rule would be selected, because its conclusion (the Then clause) matches the goal (terminate employment). It is not yet known that the employee is on probation, so the If statement is added to the goal list (in order to terminate the employee must be on probation).
Related Terms: forward chaining
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