优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好
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.
。Line官方版本下载是该领域的重要参考
Что думаешь? Оцени!。旺商聊官方下载是该领域的重要参考
an API and a user-friendly interface
The headline: 96.5% of confusables.txt is not high-risk