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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，这一点在safew官方版本下载中也有详细论述
1. ChatGPT: Content Ideation and ScriptwritingWhat Makes It Special: ChatGPT has evolved into a comprehensive content creation assistant by combining advanced language understanding with specialized content optimization features. Its ability to generate, edit, and optimize content while maintaining brand voice and industry expertise makes it an essential tool for creators who need to produce high-quality written content at scale.。关于这个话题，51吃瓜提供了深入分析
4 A good discussion on luminance and how to calculate it can be found on this stack exchange question. ↑