Deepak Kharel,BBC Eye Investigations
Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.
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新供给补缺口：用闭环把AI风险重新变得可保所谓新供给，核心不是卖一张保单，而是交付一个闭环：评估、承保、监控。当传统市场收缩敞口时，谁能补位甚至敢扩限额，取决于谁能把AI风险变成可承保对象。