Examples of weka.classifiers.functions.pace.ChisqMixture

weka.classifiers.functions.pace.ChisqMixture

Class for manipulating chi-square mixture distributions.

For more information see:

Wang, Y (2000). A new approach to fitting linear models in high dimensional spaces. Hamilton, New Zealand.

Wang, Y., Witten, I. H.: Modeling for optimal probability prediction. In: Proceedings of the Nineteenth International Conference in Machine Learning, Sydney, Australia, 650-657, 2002. BibTeX:

 @phdthesis{Wang2000, address = {Hamilton, New Zealand}, author = {Wang, Y}, school = {Department of Computer Science, University of Waikato}, title = {A new approach to fitting linear models in high dimensional spaces}, year = {2000} } @inproceedings{Wang2002, address = {Sydney, Australia}, author = {Wang, Y. and Witten, I. H.}, booktitle = {Proceedings of the Nineteenth International Conference in Machine Learning}, pages = {650-657}, title = {Modeling for optimal probability prediction}, year = {2002} }

@author Yong Wang (yongwang@cs.waikato.ac.nz) @version $Revision: 1.5 $

      break;
    case pace2Estimator: 
    case pace4Estimator:
    case pace6Estimator:
      DoubleVector AHat = aHat.square();
      ChisqMixture dc = new ChisqMixture();
      dc.fit( AHat, MixtureDistribution.NNMMethod ); 
      DoubleVector ATilde; 
      if( paceEstimator == pace6Estimator ) 
  ATilde = dc.pace6( AHat );
      else if( paceEstimator == pace2Estimator ) 
  ATilde = dc.pace2( AHat );
      else ATilde = dc.pace4( AHat );
      aTilde = ATilde.sqrt().times( aHat.sign() );
      break;
    case olsEstimator: 
      aTilde = aHat.copy();
      break;

      break;
    case pace2Estimator: 
    case pace4Estimator:
    case pace6Estimator:
      DoubleVector AHat = aHat.square();
      ChisqMixture dc = new ChisqMixture();
      dc.fit( AHat, MixtureDistribution.NNMMethod ); 
      DoubleVector ATilde; 
      if( paceEstimator == pace6Estimator ) 
  ATilde = dc.pace6( AHat );
      else if( paceEstimator == pace2Estimator ) 
  ATilde = dc.pace2( AHat );
      else ATilde = dc.pace4( AHat );
      aTilde = ATilde.sqrt().times( aHat.sign() );
      break;
    case olsEstimator: 
      aTilde = aHat.copy();
      break;

Related Classes of weka.classifiers.functions.pace.ChisqMixture

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