code: def get_centers_mean_cov(self, estimation):
          
          centers_mean_cov = estimation[self.map_offset[2]:self.map_offset[3]]\
              .reshape(self.K, self.cov_vec_size)
          return centers_mean_cov
docs: Get estimation on the covariance of centers' mean
  
  
          Parameters
          ----------
          estimation : 1D arrary
               Either prior of posterior estimation
  
  
          Returns
          -------
  
          centers_mean_cov : 2D array, in shape [K, cov_vec_size]
              Estimation of the covariance of centers' mean