Module: PCA

Defined in:
lib/appswarm/routing/pca.rb

Defined Under Namespace

Classes: Base, Input

Instance Method Summary collapse

Instance Method Details

#doOrthoPCA ⇒ Object 



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# File 'lib/appswarm/routing/pca.rb', line 137

def doOrthoPCA

trainCount=@input.trainCount
featureCount=@input.featureCount

#[email protected]
d=@input.dmatrix
@middle=d.middle_row
dt=d.transpose

t=d*dt

t=t*(1.0/trainCount)

eigenValues=eigenVectors=nil
t.eigensystem {|_eigenVectors,_eigenValues,img|
  eigenValues=_eigenValues
  eigenVectors=_eigenVectors
}

nvr=dT*eigenVectors

#Tools::Math::Matrix nvr(trainCount,featureCount);

#nvr=dT*vr;


#  PCAOutput o;



#  for(size_t y=0;y<ev.size();y++)
#    {
#      PCAVector v;
#      double scale;

#      if(ev[y]>0)
#  scale=sqrt(ev[y]*trainCount);
#      else
#  scale=0;

#      if(scale<=0.0f)
#  scale=0;
#      else
#  scale=1.0/scale;


#      for(size_t x=0;x<nvr.nrows();x++)
#  v.push_back(nvr(x,y)*scale);
#      o.vectors.push_back(v);
#      o.values.push_back(ev[y]>0?ev[y]:0);
#    }
end