中文说明：数据降维的各种方法，LDA,CPA等，数据降维的各种方法，LDA,CPA等，数据降维的各种方法，LDA,CPA等，数据降维的各种方法，LDA,CPA等
English Description：
Various methods of data dimension reduction, LDA, CPA, etc., various methods of data dimension reduction, LDA, CPA, etc., various methods of data dimension reduction, LDA, CPA, etc., various methods of data dimension reduction, LDA, CPA, etc