The quadtree is the two-dimensional case of a broader family of space-partitioning data structures. Octrees extend the same idea to three dimensions (splitting cubes into eight children), KD-trees use alternating axis-aligned splits (splitting along x, then y, then x again), and R-trees group nearby objects into bounding rectangles. Each variant makes different tradeoffs between construction time, query speed, and update cost.
VITURE成立于2021年，总部位于北京和旧金山，创始人姜公略毕业于哈佛大学，是前谷歌眼镜的成员，深度参与了谷歌眼镜的研发。
。业内人士推荐同城约会作为进阶阅读
Let's now take a look at that same dismantle operation from before in the offline game.
优点：计算简单，导数恒为1（正区间），缓解梯度消失