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"recreate exampleset after feature selection in javacode"
I can't find out how to rebuild or reduce my exampleset after feature selection in javacode, I've been trying for days. In Weka's AttributeSelection you can do that by using reduceDimensionality. My features are numeric and my classlabel is nominal. Before feature selection I have about 500 examples in my exampleset each represented by over a thousand attributes. Attribute selection reduces those thousand attributes to, say, 20 attributes. How can I represent the 500 examples in my exampleset represent with the 20 attributes in javacode?
Any suggestion will be much appreciated,