bug in SVD slide
there was a bug in the SVD slides: The dimension of the matrix V is NxN (Slide 21 of 2007-12-17-DataFitting2.pdf). Furthermore, the notation "id_m" for the identical matrix was unclear and is now replaced by "id". I uploaded corrected versions of both datafitting lectures and the conclusions to the web site.
Thanks to Jens-Fabian Goetzmann for pointing this out!