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.
赴任福建宁德地委书记，面对当地一些干部想带大家快速脱贫致富的急切心态，习近平同志“没有摆出要烧‘三把火’的架势”，而是一头扎进基层，1个月走遍闽东9县察实情。
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拉长时间线来看，有披露研发人员的企业数量从2021 年度的3895 家增至2025 年度的5309 家，五年间增长36.30%，增幅高于入库企业总数变动（20.81%）。随着这一增长，有披露研发人员的企业占比呈逐年攀升的态势，从66.60%增至75.15%。