Roring And Granularity Ruduction Based On Set-valued Information Syetem

Enterprise diagnosis has many complex diagnostic methods and tools,and these bring forth many different solutions.But too many enterprise diagnosis scheme of index data failed to effectively analysis lead to diagnostic utility value is difficult to determine.Even superiority and inferiority of some diagnostic scheme is unable to compare.Therefore,the enterprise diagnostic research urgently need to evaluate the utility of diagnostic plan of the enterprise value.Rough set theory as a new data mining tool,it has unique attributes reduction and attributes of the most important sexual function.It's extraction of rules as well as the objective and quantitative data mining ability is significant.This article's main research content is as follows:(1)The connotation of the basic concepts of rough sets and application research status are analyzed.And on the attribute reduction and attribute importance of rough set two basic principle are described.Based on the approximate concept and the principle of equivalence relation,the paper analyzes the discemibility matrix attribute reduction method.On the basis of the index data information analysis method for determining the weights of index data.(2)The diagnosis of the enterprise and its connotation of the concept of utility value are analyzed,and discussed the utility value as the applicability of the value of enterprise diagnosis is studied.At this stage based on the form of diagnostic utility value and diagnosis of participants from the enterprise.The stages and three factors analysis methods and tools for diagnosing scheme overall utility value and the effect of the utility value of comprehensive evaluation of diagnostic method as the research angle of this article.(3)Building an enterprise diagnosis scheme based on rough set utility value evaluation model,using the rough set theory to the enterprise diagnostic utility value evaluation index data filtering and analysis.In a certain extent,expanded the research field of rough set and enrich the research contents of diagnostic utility value.The analysis of application example also shows that the rough freight for enterprise diagnostic utility value evaluation is practical.