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)判别分析则是依据系列的解释变量预 测个体分组情况。 2021/2/22 21 cxt
2021/2/22 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 1、ⅹ2. Xp variables and classify information a (1can this knowledge be used to rule that classify new sample? o construct a 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? 2021/2/22 cxt
2021/2/22 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 (1)two-groups discriminant analysis multiple-groups discriminant analysis (2) linear discriminant analysis nonlinear discriminant analysis B3)stepwise discriminant analysis back ward discriminant analysis forward discriminant analysis (4)distance discriminant analysis Fisher discriminant analysis Bayes discriminant analysis 2021/2/22 cxt
2021/2/22 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
◆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 2021/2/22 cxt
2021/2/22 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
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 表歇尔( Fisher)判别 逐步判别 2021/2/22 25
2021/2/22 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