说明：核lpp（局部保持映射）的降维方法。跟Xiaofei He的论文配套

LPP-matlab KLPP 降维 闄嶇淮 KLPP-matlab

说明：matlab dim_reduction 包括 dijkstraKDAKGELPPKLPPKPCASDA等

KPCA KGE KLPP-matlab lpp eudist2