def reset_prior(self, node: Node) -> None:
        """
        Overview:
            Reset prior probability
        Arguments:
            - node (:obj:`Class Node`): Current node.
        """
        for a in node.children.keys():
            node.children[a].prior_p = node.children[a].prior_p_ori

        Overview:
            Reset prior probability
        Arguments:
            - node (:obj:`Class Node`): Current node.
        
reason/guided_search/tree.py