def METHOD_NAME(cls, serialized_params):
    """
    Replace the assignment items by a named tuple for easier use.
    """
    serialized_params_copy = deepcopy(serialized_params)
    serialized_params_copy["assignments"] = [
        AssignmentTuple(*at) for at in serialized_params_copy["assignments"]
    ]
    return cls.Params(**serialized_params_copy)