code: def convert_loguniform_categorical(self, challenger_dict):
          
          converted_dict = {}
          for key, value in challenger_dict.items():
              # convert to loguniform
              if key in self.loguniform_key:
                  converted_dict[key] = np.exp(challenger_dict[key])
              # convert categorical back to original value
              elif key in self.categorical_dict:
                  idx = challenger_dict[key]
                  converted_dict[key] = self.categorical_dict[key][idx]
              else:
                  converted_dict[key] = value
          return converted_dict
docs: Convert the values of type `loguniform` back to their initial range
          Also, we convert categorical:
          categorical values in search space are changed to list of numbers before,
          those original values will be changed back in this function
          
          Parameters
          ----------
          challenger_dict: dict
              challenger dict
  
          Returns
          -------
          dict
              dict which stores copy of challengers