http://nmf.r-forge.r-project.org/demo-heatmaps.html R basismap() of the NMF. http://blog.csdn.net/waycaiqi/article/details/11734735 http://liuzhiqiangruc.iteye.com/blog/2095116 http://techtrace.org/?p=2104
If you can't explain it simply, you don't understand it well enough. –Albert Einstein