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Posted to commits@mahout.apache.org by ak...@apache.org on 2017/02/04 00:02:01 UTC

svn commit: r1781627 - /mahout/site/mahout_cms/trunk/content/users/algorithms/d-spca.mdtext

Author: akm
Date: Sat Feb  4 00:02:01 2017
New Revision: 1781627

URL: http://svn.apache.org/viewvc?rev=1781627&view=rev
Log:
MAHOUT-1682: Create an SPCA page.

Modified:
    mahout/site/mahout_cms/trunk/content/users/algorithms/d-spca.mdtext

Modified: mahout/site/mahout_cms/trunk/content/users/algorithms/d-spca.mdtext
URL: http://svn.apache.org/viewvc/mahout/site/mahout_cms/trunk/content/users/algorithms/d-spca.mdtext?rev=1781627&r1=1781626&r2=1781627&view=diff
==============================================================================
--- mahout/site/mahout_cms/trunk/content/users/algorithms/d-spca.mdtext (original)
+++ mahout/site/mahout_cms/trunk/content/users/algorithms/d-spca.mdtext Sat Feb  4 00:02:01 2017
@@ -3,7 +3,7 @@
 
 ## Intro
 
-Mahout has a distributed implementation of Stochastic PCA[1].
+Mahout has a distributed implementation of Stochastic PCA[1]. this algorithm computes the exact equivalent of Mahout's `dssvd(\(\mathbf{A-1\mu}\))` by modifying the `dssvd` algorithm so as to avoid forming `\(\mathbf{A-1\mu}\)`, which would densify a sparse input. Thus, it is suitable for work with both dense and sparse inputs.
 
 ## Algorithm