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3D Shape Histograms for Similarity Search and Classification in Spatial Databases. Mihael Ankerst,Ga... - page 35 / 44

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Optimal Multistep k- Nearest Neighbor Search

In order to achieve a good performance , the paradigm of mutlistep query processing is used

An index-based filter step produces a set of candidates

Refinement step performs the expensive exact evaluation of the candidates

Filter is responsible for completeness and refinement for correctness

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