15:56, 27 февраля 2026Россия
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.
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Author(s): Xiongwei He, Fan-Shun Meng, Yanjing Su, Lijie Qiao, Shigenobu Ogata, Lei Gao
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