code: def convert_and_evaluate(self, system_id=1,
                               split_sentences=False, rouge_args=None):
          
          if split_sentences:
              self.split_sentences()
          self.__write_summaries()
          rouge_output = self.evaluate(system_id, rouge_args)
          return rouge_output
docs: Convert plain text summaries to ROUGE format and run ROUGE to
          evaluate the system summaries in system_dir against the model
          summaries in model_dir. Optionally split texts into sentences
          in case they aren't already.
  
          This is just a convenience method combining
          convert_summaries_to_rouge_format() and evaluate().
  
              split_sentences:    Optional argument specifying if
                                  sentences should be split.
              system_id:          Optional system ID which will be printed
                                  in ROUGE's output.
  
          Returns: ROUGE output as string.