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# Fast Spatial Decomposition and Closest Pair Computation for Limited Precision Input

@article{Reif2000FastSD, title={Fast Spatial Decomposition and Closest Pair Computation for Limited Precision Input}, author={John H. Reif}, journal={Algorithmica}, year={2000}, volume={28}, pages={271-287} }

- Published 2000 in Algorithmica
DOI:10.1007/s004530010040

In this paper we show that if the input points to the geometric closest pair problem are given with limited precision (each coordinate is specified with O( log n) bits), then we can compute the closest pair in O(n log log n) time. We also apply our spatial decomposition technique to the k -nearest neighbor and n -body problems, achieving similar improvements. To make use of the limited precision of the input points, we use a reasonable machine model that allows ``bit shifting'' in constant time… CONTINUE READING