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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 `\(\mathbf{B}_{q}\mathbf{B}_{q}^{\top}=\mathbf{\hat{U}}\boldsymbol{\Lambda}\mathbf{\hat{U}}^{\top}\)`,
`\(\mathbf{B}_{q}\mathbf{B}_{q}^{\top}\in\mathbb{R}^{\left(k+p\right)\times\left(k+p\right)}\)`.