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在 3D 邻域中有数据点(见附图),我想定义一个空间分布的度量,以接受或拒绝数据集作为进一步分析的候选者。一种度量可能是 3D 子体积(边界框)中有多少单元被邻域占用。另一个是数据如何沿每个轴延伸。是否有其他更好的衡量空间分布的标准?谢谢