【摘要】 本文论述了控制策略与推理效果及效率的关系,简单地剖析了三种典型的双向混合控制策略,并详细介绍了笔者在研制航空物探专家系统^[1]时提出的一种单步正向、全局反向的双向混合控制策略。该策略能使目标的选择尽快集中到有效目标上,能随时收集必要的信息,能适合精确推理与不精确推理两种模式。因此,它■■保证了推理的有效性,而且能提高推理的效率。该控制策略已经在航空物探专家系统中投入使用,效果良好。更多还原

【Abstract】 This paper discusses the relation between a control strategy and inferential efficiency, analyses simply three typical forward-backward mixed control strategies,and reports an one-step forward and all-step backward mixed control strategy that author puts forward in building areogeophysical prospecting expert system. This strategy can make the selection of goals focus the effective goals as fast as possible,can collect neccessary information at any time, and can adapt two modes for exact and inexact reasonings. Therefore, it can both ensure the inferential effect and improve the inferential efficiency. This control strategy has been used in areogeophysical prospecting expert system. The result is satisfactory.更多还原