code: def objective_to_model(self, x_objective):
          ''' This function serves as interface between objective input vectors and
          model input vectors'''
  
          x_model = []
  
          for k in range(self.objective_dimensionality):
              variable = self.space_expanded[k]
              new_entry = variable.objective_to_model(x_objective[0,k])
              x_model += new_entry
  
          return x_modef objective_to_model(self, x_objective):
          ''' This function serves as interface between objective input vectors and
          model input vectors'''
  
          x_model = []
  
          for k in range(self.objective_dimensionality):
              variable = self.space_expanded[k]
              new_entry = variable.objective_to_model(x_objective[0,k])
              x_model += new_entry
  
          return x_model
docs: This function serves as interface between objective input vectors and
          model input vectors