[mlpack-svn] [MLPACK] #166: PCA fails comparison with MATLAB
MLPACK Trac
trac at coffeetalk-1.cc.gatech.edu
Thu Dec 1 04:06:34 EST 2011
#166: PCA fails comparison with MATLAB
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Reporter: rcurtin | Owner: ajinkya
Type: defect | Status: new
Priority: critical | Milestone: MLPACK 1.0
Component: MLPACK | Resolution:
Keywords: pca incorrect dimensionality reduction matlab | Blocking: 126
Blocked By: |
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Comment (by ajinkya):
By default other packages for princomp (atleast R and Armadillo princomp)
do not do mean-centering and scaling (with standard deviation). So if we
want to provide that we will have to add that as a parameter to make this
consistent with those packages.
Based on that decision I modify the api and also refactor the code
duplication in Apply().
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Ticket URL: <http://trac.research.cc.gatech.edu/fastlab/ticket/166#comment:1>
MLPACK <www.fast-lab.org>
MLPACK is an intuitive, fast, and scalable C++ machine learning library developed by the FASTLAB at Georgia Tech under Dr. Alex Gray.
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