判别分析论文..doc

判别分析论文 学校：南通大学 学院：杏林学院 学科：多元统计分析 班级：金融统计101 学号：1002103008 姓名：陈昕昕 指导老师：于长俊 判别分析 摘要： 判别分析是判别样品所属类型的一种统计方法，其应用之广可与回归分析媲美.本文通过介绍判别分析的概念和应用领域，对其进行分类，并对其中的某些方法进行具体介绍，如距离判别法和费希尔判别法，然后应用某些常见的判别分析方法解决实际问题. 关键词：判别分析；概念；应用领域；距离判别法；费希尔判别;实际问题 The application of discriminate analysisAbstract：The discriminate analysis is a kind of statistical method that distinguishes the type that sample belongs to, it is applied widely which can match with regression analysis in excellence.In this paper, introduce the concept and application field of discriminate analysis ,and then do some classifications according to it. Then we introduce some kinds of discriminate analysis,such as discriminate analysis by distance and Fisher’s discriminate analysis. At last,we solve two pratical problemes,by method of discriminate analysis by distance or Fisher’s discriminate analysis.Keywords ：discriminate analysis ；concept； application field；discriminate analysis by distance ； Fisher’s discriminate analysis；pratical problemes 目录 引言...................................................4 1.1 什么是判别分析.........................................4 1.2 判别分析的方法.........................................4 1.3 判别分析的统计背景.....................................4 二、距离判别法................................................6 2.1什么是距离判别法…………………………………………………..6 2.2马氏距离................................................6 2.2.1概念................................................6 2.2.2定义................................................6 2.2.3马氏距离的优缺点……………………………………………..7 2.3距离判别法的基本思想....................................7 2.4距离判别法的判别函数和判别准则…………………………………7 三、贝叶斯判别法……………………………………………………………8 3.1什么是贝叶斯判别法…………………………………………………8 3.2贝叶斯判别法的基本思想…………………………………………….8 3.3贝叶斯判别法的准则…………………………………………………8 3.4贝叶斯判别法的分类函数……………………………………………8 四、Fisher判别法..............................................9 4.1什么是Fisher判别法……………………………………………….9 4.2Fisher判别法的基本思想…………………………………………..9 4.3Fisher判别法判别函数