protected Instances process(Instances data) {
public Instances process(Instances data) {
    protected Instances process(Instances data) {      Instances	result;      int		i;      int		n;            result = super.process(data);            for (i = 0; i < result.numAttributes(); i++) {        if (i == result.classIndex())  	continue;        if (!result.attribute(i).isNumeric())  	continue;                for (n = 0; n < result.numInstances(); n++)  	result.instance(n).setValue(i, Math.abs(result.instance(n).value(i)));      }            return result;    }