针对知识发现系统建设时只重视数据挖掘技术,而忽视对系统流程控制,缺乏对知识发现系统流程的模式研究问题,通过相关案例比较,提出基于系统思考的知识发现一般流程模式;分析科学研究以及商业应用中知识发现系统和公共管理决策系统模式之间的差异;归纳不同类型的知识发现系统流程的特点及关键控制点,并针对公共决策支持系统中的伪证障碍给出基本应对策略。 In view of the knowledge discovery system construction, it only pays attention to data mining technology, ignores the control of system flow and lacks the model research on the process of knowledge discovery system. By comparing the relevant cases, it puts forward the general process of knowledge discovery based on system thinking. The difference between the knowledge discovery system and the public management decision system model in commercial application; summarizes the characteristics and key control points of different types of knowledge discovery system processes; and provides the basic coping strategies for the perjury barrier in the public decision support system.