摘要
主成分分析法在教材里,多使用公式推导,缺乏几何直观解释。本文针对上述问题,引入几何观点,对主成分分析法的知识点进行分解,并给予几何解释和分析。文章为学生直观理解主成分分析法提供一个几何视角。
The principal component analysis was most introduced by derivation of formulas,lacking geometricalexplanation in most of textbooks.We decomposed the knowledge points of principal component analysis method,andintroduced the geometrical explanation and analysis of the method.This work can bring a geometrical view of theprincipal component analysis method to the students.
作者
唐明
TANG Ming(Transportation College Of Jilin University,Changchun,Jilin 130000,China)
出处
《教育教学论坛》
2018年第22期172-173,共2页
Education And Teaching Forum
基金
2017年教改项目--交通运输工程学科创新型人才培养课程体系构建
关键词
主成分分析
协方差矩阵
向量运算
principal component analysis
covariance matrix
vector operation
