A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
This article originally appeared on Engadget at https://www.engadget.com/ai/google-and-openai-employees-sign-open-letter-in-solidarity-with-anthropic-194957274.html?src=rss
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特点：通过门控机制控制信息流，增强非线性表达。 优点： 适合序列建模、控制性强。 常用于： Transformer FFN、语言模型。
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