Point lookups are useful, but the operation you'll reach for more often is a range query: give the tree a rectangular region and retrieve every point inside it, without scanning the entire dataset.
When do I need a split keyboard?
。夫子是该领域的重要参考
优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好
Мерц резко сменил риторику во время встречи в Китае09:25