[mlpack-svn] [MLPACK] #327: PCA Module Improvement

MLPACK Trac trac at coffeetalk-1.cc.gatech.edu
Mon Mar 3 18:49:06 EST 2014


#327: PCA Module Improvement
----------------------------+-----------------------------------------------
  Reporter:  siddharth.950  |        Owner:  birm    
      Type:  enhancement    |       Status:  accepted
  Priority:  major          |    Milestone:          
 Component:  mlpack         |   Resolution:          
  Keywords:                 |     Blocking:          
Blocked By:                 |  
----------------------------+-----------------------------------------------

Comment (by rcurtin):

 I'm sorry, I was wrong; the identity matrix isn't centered so it isn't the
 right one to test.  What you want to test instead is this:

 1 0 0 -1 0 0
 0 1 0 0 -1 0
 0 0 1 0 0 -1

 and that should have a result that looks something like

 a 0 0 -a 0 0
 0 a 0 0 -a 0
 0 0 a 0 0 -a

 but I haven't bothered to calculate what a should be (probably 1 or
 something like that).

-- 
Ticket URL: <http://trac.research.cc.gatech.edu/fastlab/ticket/327#comment:12>
MLPACK <www.fast-lab.org>
MLPACK is an intuitive, fast, and scalable C++ machine learning library developed at Georgia Tech.


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