code: private void sequenceCrossValidate() throws IOException {
  
      final String paramFile = this.parsedArguments.getString("params");
      final TrainingParameters params = IOUtils.loadTrainingParameters(paramFile);
      final SequenceCrossValidator crossValidator = new SequenceCrossValidator(params);
      crossValidator.crossValidate(params);
    }
docs: Main access to the sequence labeler cross validation.
  
  @throws IOException
  input output exception if problems with corpora