question: public String toString ( ) { StringBuffer text = new StringBuffer ( ) ; text . append ( "Regression by discretization" ) ; if ( m_ClassMeans == null ) { text . append ( ": No model built yet." ) ; } else { text . append ( "\n\nClass attribute discretized into " + m_ClassMeans . length + " values\n" ) ; text . append ( "\nClassifier spec: " + getClassifierSpec ( ) + "\n" ) ; text . append ( m_Classifier . toString ( ) ) ; } return text . toString ( ) ; }
target:  Returns a description of the classifier.