Computes Rudder score.
        Parameters
        ----------
        category : str
            category name to score

        Returns
        -------
            np.array

def get_rudder_scores(self, category):
        ''' Computes Rudder score.
        Parameters
        ----------
        category : str
            category name to score

        Returns
        -------
            np.array
        '''
        category_percentiles = self._get_term_percentiles_in_category(category)
        not_category_percentiles = self._get_term_percentiles_not_in_category(category)
        rudder_scores = self._get_rudder_scores_for_percentile_pair(category_percentiles,
                                                                    not_category_percentiles)
        return rudder_scores