question: @ Override public String toString ( ) { StringBuffer text = new StringBuffer ( ) ; if ( m_trainInstances == null ) { text . append ( "\tOneR feature evaluator has not been built yet" ) ; } else { text . append ( "\tOneR feature evaluator.\n\n" ) ; text . append ( "\tUsing " ) ; if ( m_evalUsingTrainingData ) { text . append ( "training data for evaluation of attributes." ) ; } else { text . append ( "" + getFolds ( ) + " fold cross validation for evaluating " + "attributes." ) ; } text . append ( "\n\tMinimum bucket size for OneR: " + getMinimumBucketSize ( ) ) ; } text . append ( "\n" ) ; return text . toString ( ) ; }
target:  Return a description of the evaluator