中文说明：function [clusters，c，F]=fisher_classify(A，B，data) fisher判别法程序 输入A、B为已知类别样本的样本-变量矩阵，data为待分类样本 输出C为判别系数向量
English Description：
function [clusters，c，F]=fisher_ Input a and B are sample variable matrix of known class samples, data are samples to be classified and output C is discriminant coefficient vector