Author(s): Eyasu Tadese M., T.E. Ada, K.N. Nigussa, Cecil N.M. Ouma
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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This story was originally featured on Fortune.com
但比起一个遥远而终极的通用智能，我们一直坚持做要能够在垂类、具体任务中落地的模型，比如至少能把工厂搬料箱这个问题真正解决。今年一级市场也意识到了这一点的重要性。，推荐阅读heLLoword翻译官方下载获取更多信息
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