局部投影算法（代码+论文）， 实现Locality Preserving Projections (LPP)，LLP可代替PCA做特征提取- Locality Preserving Projections (LPP)

lpp算法实现,Locality Preserving Projections局部保持投影算法 hexiaofei的论文(lppLocality Preserving Projections (LPP) builds a graph incorporating neighborhood information of the data set. Using the notion of the Laplacian of the graph, we then compute a transforma