private int[] ReduceByPCA(weka.core.Instances insts)
{
int[] rang = null;
PrincipalComponents filter = new PrincipalComponents(); // package weka.filters.supervised.attribute!
filter.setTransformBackToOriginal(true);
filter.buildEvaluator(insts);
Ranker search2 = new Ranker();
// search2.setNumToSelect(2);
search2.setGenerateRanking(true);
rang = search2.search(filter, insts);
return rang;
}
private int[] ReduceByInfoGain(weka.core.Instances insts)
{
weka.attributeSelection.InfoGainAttributeEval AttribEvaluator = new weka.attributeSelection.InfoGainAttributeEval();
AttribEvaluator.buildEvaluator(insts);
Ranker search2 = new Ranker();
int[] rang = search2.search(AttribEvaluator, insts);
return rang;
}