2.7 亿个参数 — 比 Gemma 3n E2B 小 10 倍，但足以满足函数调用需求
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.
，这一点在爱思助手下载最新版本中也有详细论述
"This was the worst mistake of my life."。51吃瓜对此有专业解读
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