Rough sets theory is a new mathematical tool , which analyses the facts hiding in data without any additional knowledge about the data , and a pithily tool for processing vague , noisy and uncertain knowledge 粗糙集理论是一种新型的处理含糊和不确定性知识的数学工具,它能够分析隐藏在数据中的事实而不需要关于数据的任何附加知识,是处理含有噪声、不精确、不完整数据的有力工具。
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Then , the article is explaining the research method . if the gained knowledge is unity and pithily in rational aspect , and contains completely and has ability to explain in experiential aspect , and has proper directive function , we can think it is reliable . chapter one is review of the theory of types of administrative acts 其次说明本文的方法论,如果所获得的知识在理性层面上具有融贯性和简洁性,在经验层面具有涵盖性和说明能力,对实践则具有适切的指导性,就可以认为这一知识是可靠的。
