口判别分析与回归分析 (1)判别分析类似于回归分析,只是判别分 析中因变量是反映分类情况的属性变量。 (2)回归分析是依据一系列的解释变量预测 我们感兴趣的某变量取值 (3)判别分析则是依据一系列的解释变量预 测个体分组情况。 2021/1/21
2021/1/21 21 cxt 判别分析与回归分析 （1）判别分析类似于回归分析，只是判别分 析中因变量是反映分类情况的属性变量。 （2）回归分析是依据一系列的解释变量预测 我们感兴趣的某变量取值 （3）判别分析则是依据一系列的解释变量预 测个体分组情况
We will know certain things about samples such as Ⅹ1、Ⅹ2. Xp variables and classify information a (1 can this knowledge be used to construct a rule that classify new sample? a(2 )what is the rule and can the rule be used to classify new sample? a 3what are the chances of making mistakes when using the rule? 2021/1/21
2021/1/21 22 cxt We will know certain things about samples such as X1、X2…..Xp variables and classify information. (1)can this knowledge be used to construct a rule that classify new sample? (2)what is the rule and can the rule be used to classify new sample? (3)what are the chances of making mistakes when using the rule?
a the type of discriminant analysis (1two-groups discriminant analysis multiple-groups discriminant analysis (2)linear discriminant analysis nonlinear discriminant anal ysis 33 stepwise discriminant analysis backward discriminant anal ysis forward discriminant analysis (4)distance discriminant analysis Fisher discriminant analysis Bayes discriminant analysis 2021/1/21
2021/1/21 23 cxt the type of discriminant analysis (1) two-groups discriminant analysis multiple-groups discriminant analysis (2）linear discriminant analysis nonlinear discriminant analysis (3) stepwise discriminant analysis backward discriminant analysis forward discriminant analysis (4) distance discriminant analysis Fisher discriminant analysis Bayes discriminant analysis
令4、判别分析类型及方法 (1)按判别的组数来分,有两组判别分析和多组判别分 析 (2)按区分不同总体所用的数学模型来分,有线性判别 和非线性判别 (3)按判别对所处理的变量方法不同有逐步判别、向后 判别、向前判别。 (4)按判别准则来分,有费歇尔判别准则、贝叶斯判别 准则等 2021/1/21
2021/1/21 24 cxt ❖ 4、判别分析类型及方法 （1）按判别的组数来分，有两组判别分析和多组判别分 析 （2）按区分不同总体所用的数学模型来分，有线性判别 和非线性判别 （3）按判别对所处理的变量方法不同有逐步判别、向后 判别、向前判别。 （4）按判别准则来分，有费歇尔判别准则、贝叶斯判别 准则等
.o This chapter, we will learn these methods of discriminant analysis ◆本章介绍的主要判别分析方法: 距离判别 贝叶斯( Bayes判别 费歇尔( Fisher)判别 逐步判别 2021/1/21 25
2021/1/21 25 cxt ❖ This chapter, we will learn these methods of discriminant analysis: ❖ 本章介绍的主要判别分析方法： 距离判别 贝叶斯(Bayes)判别 费歇尔(Fisher)判别 逐步判别