Method sum_hessian

demo/guide-python/model_parser.py:65–67

Sum Hessian of a node.

(self, node_id: int)

        return self.nodes[node_id].loss_chg

    def sum_hessian(self, node_id: int) -> float:
        """Sum Hessian of a node."""
        return self.nodes[node_id].sum_hess

    def base_weight(self, node_id: int) -> float:
        """Base weight of a node."""