Secondly, to combine the merit of Fisher discriminant analysis and laplacian graph: Linear discriminant analysis can obtain the best projecting direction and laplacian graph can preserve the local structure.

• 其次,结合Fisher准则函数和拉普拉斯图的特性:线性鉴别分析寻找最优的投影方向和拉普拉斯图保留本地结构信息的优点,本文第三章提出了广义的拉普拉斯鉴别分析方法。