摘要
给出了主成分分析的数学模型和计算原理,用实例说明了模型生态环境因子分析中的应用,从8个相关的因素指标中提出了3个主成分用以描述生态水体的特征与状态,并获得了满意的结果.
A math model and computing principle of principal components analysis is given, and its validity is proved by exemplifying an application in the analysis about model ecological environment factor, which selects three principal components from eight correlative factors.to describe the character and state of water circumstance. In the end, some satisfying results are gained.
出处
《西南民族大学学报（自然科学版）》
CAS
2008年第2期203-206,共4页
Journal of Southwest Minzu University(Natural Science Edition)
关键词
主成分分析
综合因子
方差贡献率
生态环境指标
principal components analysis
synthetic factor
variance contributive
ecological environment factor
