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3D Shape Histograms for Similarity Search and Classification in Spatial Databases. Mihael Ankerst,Ga... - page 25 / 44

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Quadratic Form Distance Functions

The neighborhood of the bins can be represented as the similarity weights

Let d(i,j) represent the distance of the cells that correspond to bin i and j

For shells the bin distance is the difference in the corresponding radii

For sectors the bin distance is the difference in the angles of sector centers

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