This paper introduced some error diagnosis methods occurred in these years.These methods enhanced the traditional methods by using some heuristics,and achieved the better diagnostic results.

• 介绍了近些年出现的几种错误诊断方法,它们在传统方法的基础上利用启发式对原有方法进行了不同程度的改进和提高,产生了较好的诊断结果。