# -- User setup --
The algorithm maintains a running "best distance" that starts at infinity. As it walks the tree, it checks each visited point and updates the best distance if it finds something closer. Before recursing into a child node, it checks whether the closest possible point in that child's bounding box is farther than the current best. If so, the entire subtree gets pruned.
，这一点在旺商聊官方下载中也有详细论述
仿生膜精华口红成为完美日记转型重研发的代表作品
Trained Weights (Learned from Data)