Experimental change: add model.reconstructRMatrix to factor input matrix R, not matrix P = R > 0. Don't use unless you understand the implications.

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@569 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Oops, make "reconstruct R matrix" param false by default!

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@570 0d189622-dca1-7e23-9e30-e8815eb7bd2f