UFLDL sparse coding ICA RICA[待更]

Reference:
[1]http://blog.csdn.net/zouxy09/article/details/8777094/
[2]http://deeplearning.stanford.edu/wiki/index.php/%E7%A8%80%E7%96%8F%E7%BC%96%E7%A0%81
[3]http://www.cnblogs.com/tornadomeet/archive/2013/04/16/3024292.html
[4]http://ufldl.stanford.edu/tutorial/unsupervised/SparseCoding/

目前先不打算看sparse coding，所以留待以后再看

ICA:
http://ufldl.stanford.edu/tutorial/unsupervised/ICA/