Reset parameters of Booster.

        Parameters
        ----------
        params : dict
            New parameters for Booster.

        Returns
        -------
        self : Booster
            Booster with new parameters.

def reset_parameter(self, params):
        """Reset parameters of Booster.

        Parameters
        ----------
        params : dict
            New parameters for Booster.

        Returns
        -------
        self : Booster
            Booster with new parameters.
        """
        if any(metric_alias in params for metric_alias in ('metric', 'metrics', 'metric_types')):
            self.__need_reload_eval_info = True
        params_str = param_dict_to_str(params)
        if params_str:
            _safe_call(_LIB.LGBM_BoosterResetParameter(
                self.handle,
                c_str(params_str)))
        self.params.update(params)
        return self