public String toSimpleString(){
  StringBuilder buffer=new StringBuilder();
  buffer.append("DataSet, label: " + (getLabel() == null ? "" : getLabel()) + ", entries: "+ mYVals.size()+ "\n");
  return buffer.toString();
}

public String toSimpleString ( ) { StringBuilder buffer = new StringBuilder ( ) ; buffer . append ( "DataSet, label: " + ( getLabel ( ) == null ? "" : getLabel ( ) ) + ", entries: " + mYVals . size ( ) + "\n" ) ; return buffer . toString ( ) ; }
returns a simple string representation of the dataset with the type and the number of entries .
