You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@mahout.apache.org by dl...@apache.org on 2014/03/10 08:48:45 UTC

svn commit: r1575861 - /mahout/site/mahout_cms/trunk/content/users/dim-reduction/ssvd.mdtext

Author: dlyubimov
Date: Mon Mar 10 07:48:45 2014
New Revision: 1575861

URL: http://svn.apache.org/r1575861
Log:
CMS commit to mahout by dlyubimov

Modified:
    mahout/site/mahout_cms/trunk/content/users/dim-reduction/ssvd.mdtext

Modified: mahout/site/mahout_cms/trunk/content/users/dim-reduction/ssvd.mdtext
URL: http://svn.apache.org/viewvc/mahout/site/mahout_cms/trunk/content/users/dim-reduction/ssvd.mdtext?rev=1575861&r1=1575860&r2=1575861&view=diff
==============================================================================
--- mahout/site/mahout_cms/trunk/content/users/dim-reduction/ssvd.mdtext (original)
+++ mahout/site/mahout_cms/trunk/content/users/dim-reduction/ssvd.mdtext Mon Mar 10 07:48:45 2014
@@ -114,12 +114,12 @@ SVD `\(\mathbf{A\approx U}\boldsymbol{\S
  (Another way is `\(\mathbf{R}^{-1}\mathbf{Y}^{\top}\mathbf{A}\)`
  , depending on whether we beleive if size of A less than size of Q).
 
-  5. If `\(q>0
-  repeat: for `\(i=1..q
+  5. If `\(q>0\)`
+  repeat: for `\(i=1..q\)`
  : `\(\mathbf{B}_{i}^{\top}=\mathbf{A}^{\top}\mbox{qr}\left(\mathbf{A}\mathbf{B}_{i-1}^{\top}\right).\mathbf{Q}\)`
   (power iterations step)
 
-  6. Compute Eigensolution of a small Hermitian `\(\mathbf{B}_{q}\mathbf{B}_{q}^{\top}=\mathbf{\hat{U}}\boldsymbol{\Lambda}\mathbf{\hat{U}}^{\top}\)`.
+  6. Compute Eigensolution of a small Hermitian `\(\mathbf{B}_{q}\mathbf{B}_{q}^{\top}=\mathbf{\hat{U}}\boldsymbol{\Lambda}\mathbf{\hat{U}}^{\top}\)`,
   `\(\mathbf{B}_{q}\mathbf{B}_{q}^{\top}\in\mathbb{R}^{\left(k+p\right)\times\left(k+p\right)}\)`.