Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
政治上的坚定、党性上的坚定都离不开理论上的坚定。党的创新理论是一个思想宝库，其中既有改造主观世界的思想武器，又有改造客观世界的科学方法。各级领导班子和广大党员干部须坚持不懈用习近平新时代中国特色社会主义思想凝心铸魂，一体推进学查改，切实把学习成果不断转化为坚定理想、锤炼党性和指导实践、推动工作的强大力量。
，这一点在Line官方版本下载中也有详细论述
2L decoder, d=16, ff=48
Фото: U.S. Navy photo by Mass Communication Specialist 2nd Class Jackson Adkins / Wikimedia