LLE 一种非线性维数约减算法，非常好用-LLE a nonlinear dimensionality reduction algorithm, a very handy

等距映射，一种用于非线性降维的全球性的几何框架，适用于学习内部平坦的低维流形-Isomap is a global geometric framework for nonlinear dimensionality reduction,it suitable for learning low dimensional manifold which inside is flat

高光谱遥感影像数据降维处理 包括线性降维和非线性降维处理-Hyperspectral remote sensing image data to reduce the dimension of linear dimensionality reduction and nonlinear dimensionality reduction processing