question: public String globalInfo ( ) { return "Loads the external test set and calls the appropriate " + "SplitEvaluator to generate some results.\n" + "The filename of the test set is constructed as follows:\n" + "   <dir> + / + <prefix> + <relation-name> + <suffix>\n" + "The relation-name can be modified by using the regular expression " + "to replace the matching sub-string with a specified replacement " + "string. In order to get rid of the string that the Weka filters " + "add to the end of the relation name, just use '.*-weka' as the " + "regular expression to find.\n" + "The suffix determines the type of file to load, i.e., one is " + "not restricted to ARFF files. As long as Weka recognizes the " + "extension specified in the suffix, the data will be loaded with " + "one of Weka's converters." ; }
target:  Returns a string describing this result producer.