因此，当风险从独立随机变成同源聚合，保险业只剩两条路：要么排除，要么把治理做进承保流程。
SelectWhat's included
，这一点在服务器推荐中也有详细论述
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
Joe FayTechnology Reporter