Dear expeRt, ? I am using recosystem package which is an wrapper of the LIBMF library,? it implements matrix factorize which needed in latent factor model, but the package only provides ?the predict method, not include matrix P,Q which estimated. I just need the P and Q matrix, so ,if anyone happen to know it ? -- PO SU mail: desolator88 at 163.com Majored in Statistics from SJTU