SLOT ACCESSING METHOD IN OBJECT ORIENTED EXPERT SYSTEM

摘要

PURPOSE:To quickly execute referring processing at the time of the reference of a slot value by deciding whether the slot value of a reference slot is to be recalculated or not based on information showing whether the slot value is to be recalculated or not at the time of the reference of the slot value of an object having a reference rule. CONSTITUTION:The information showing whether the slot value to be generated in the slot 51b to 56b having the reference rule 1 to 4 in accordance with dependence relation between the slot to be referred to and the reference slot is to be recalculated or not is held in a slot 'recalculation flag' 64. Then, at the time of the reference of the slot value of the object having the reference rule 1 to 4, the flag held in that slot is referred to, and when the reference results in the flag purporting that it is to be recalculated, the slot value is recalculated, and on the other hand, in the case of the flag purporting that it is not to be recalculated, the slot value is not recalculated. Thus, the referring processing at the time of the reference of the slot value can be quickly executed.