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.
Last month at the CES technology trade show in Las Vegas, Huang unveiled a new tech platform for self-driving cars.
，这一点在夫子中也有详细论述
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教唆、胁迫、诱骗他人违反治安管理的，按照其教唆、胁迫、诱骗的行为处罚。
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