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What is CJ Affiliate?Commission Junction is an online advertising company that offers affiliate programs for various retailers. Since 1998, it has been known as one of the oldest and most popular affiliate networks.
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'ZDNET Recommends': What exactly does it mean?
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.