The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.
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。业内人士推荐51吃瓜作为进阶阅读
13 February 2026ShareSave
近期，Anthropic 正式发布第三版《责任扩展政策》（RSP V3），宣布对其大模型安全框架进行重大改革。