After their initial degree and the mandatory two years of post-graduate foundation training, many choose to specialise in a particular area of medicine or surgery.
Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
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63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54