说明：  基于Fisher准则线性分类器设计 进一步了解分类器的设计概念，能够根据自己的设计对线性分类器有更深刻地认识，理解Fisher准则方法确定最佳线性分界面方法的原理
(Fisher linear classification criteria for classification designed to further understanding of the design concept According to the design of linear classification for a more profound understanding, Fisher understood the criteria to determine the best method of linear interface of the theory)