In the paper, a model based diagnosis using qualitative causal model and polynomial algorithm is presented, which has less computation burden and the correctness of this new algorithm is proved.
提出一种使用定性因果与多项式算法的模型诊断方法，此方法可以明显地减少诊断的计算量，并且对这种新算法的正确性给予了证明。
This paper describes the main idea and process of qualitative reasoning based on component model, and analyses the causal interpretation methods of system behaviors.
本文阐述了基于部件模型的定性推理方法的基本思想和过程，并对系统行为的因果解释方法进行了分析。
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