code: def json2paramater(ss_spec, random_state):
      
      if isinstance(ss_spec, dict):
          if '_type' in ss_spec.keys():
              _type = ss_spec['_type']
              _value = ss_spec['_value']
              if _type == 'choice':
                  _index = random_state.randint(len(_value))
                  chosen_params = json2paramater(ss_spec['_value'][_index], random_state)
              else:
                  chosen_params = eval('parameter_expressions.' + # pylint: disable=eval-used
                                       _type)(*(_value + [random_state]))
          else:
              chosen_params = dict()
              for key in ss_spec.keys():
                  chosen_params[key] = json2paramater(ss_spec[key], random_state)
      elif isinstance(ss_spec, list):
          chosen_params = list()
          for _, subspec in enumerate(ss_spec):
              chosen_params.append(json2paramater(subspec, random_state))
      else:
          chosen_params = copy.deepcopy(ss_spec)
      return chosen_params
docs: Randomly generate values for hyperparameters from hyperparameter space i.e., x.
      
      Parameters
      ----------
      ss_spec:
          hyperparameter space
      random_state:
          random operator to generate random values
  
      Returns
      -------
      Parameter:
          Parameters in this experiment