On Wed, Jan 18, 2012 at 11:49:07PM +0100, Andreas wrote: > > Actually, I am not sure what FA means. For me ICA, PCA, or any > > decomposition model is an FA. Joris, what do you have in mind in > > particular? > > > > > Factor analysis is a decomposition with a particular > assumption about the noise.
tl;dr (probabilistic) PCA assumes isotropic Gaussian noise, factor analysis relaxes this to diagonal. It has identifiability problems though -- the latent factors are only unique up to a rotation. ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Scikit-learn-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
