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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.，推荐阅读搜狗输入法下载获取更多信息
After Zomato, Deepinder Goyal returns with a $54M brain-monitoring bet，这一点在safew官方版本下载中也有详细论述
据悉，这项技术通过飞秒激光在玻璃内部刻写体素（voxel）结构，实现高密度、低能耗且可保存上万年的数据存储能力。