	new file:   _posts/2015-11-03-on-pca.md
	new file:   _posts/2015-11-03-on-pca.md

galaxy001/galaxy001.github.com,galaxy001/galaxy001.github.com,galaxy001/galaxy001.github.com,galaxy001/galaxy001.github.com,galaxy001/galaxy001.github.com,galaxy001/galaxy001.github.com