The continuous development of information system(IS)has advanced the research of the basic theory From the point of view of mathematical model, the basic theory of IS is discussed in this Firstly, the mathematical model of IS based on set theory is Then perfectibility and redundancy of information and attributes in IS are On the basis of the concepts of maximal IS, optional IS and simplest IS, perfect IS is defined, and uncertain IS is introduced considering the 信息系统的不断发展直接促进了信息系统基础理论的研究 本文从数学模型的角度出发对信息系统的基础理论进行了探讨 首先 ,文中给出了基于集合论的信息系统的数学模型 ;然后就信息系统中信息和属性的完备性和冗余程度两个方面进行了讨论 在介绍了最大的信息系统、可选的信息系统和最简信息系统的定义后 ,本文提出了理想信息系统的概念 ;并针对信息系统中信息的不确定性问题 ,引入了不确定性信息系统的概念 ==================上面只是中英文摘要,如果不要全文就足够了。至于全文,你可以去Google查找。另外,这儿有几篇关于文献搜索的文章,不妨去看看: