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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.
，这一点在同城约会中也有详细论述
第九十三条 在办理刑事案件过程中以及其他执法办案机关在移送案件前依法收集的物证、书证、视听资料、电子数据等证据材料，可以作为治安案件的证据使用。
全国人大常委会副委员长李鸿忠、王东明、肖捷、郑建邦、丁仲礼、蔡达峰、何维、武维华、铁凝、彭清华、张庆伟、洛桑江村、雪克来提·扎克尔，秘书长刘奇出席会议。
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