space and develops a two-phase KFD framework, ie, kernel principal component analysis
(KPCA) plus Fisher linear discriminant analysis (LDA). This framework provides novel
insights into the nature of KFD. Based on this framework, the authors propose a complete
kernel Fisher discriminant analysis (CKFD) algorithm. CKFD can be used to carry out
discriminant analysis in" double discriminant subspaces." The fact that, it can make full use …