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A near-linear constant-factor approximation for euclidean bipartite matching?
Conference proceeding

A near-linear constant-factor approximation for euclidean bipartite matching?

Pankaj Agarwal and Kasturi Varadarajan
Proceedings of the twentieth annual symposium on computational geometry, pp.247-252
SCG '04
06/08/2004
DOI: 10.1145/997817.997856

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Abstract

In the Euclidean bipartite matching problem, we are given a set R of "red" points and a set B of "blue" points in 3 where | R | = | B | = n , and we want to pair up each red point with a distinct blue point so that the sum of distances between the paired points is minimized. We present an approximation algorithm that given any parameter 0 < ε < 1 runs in O ( n 1+ε ) expected time and returns a matching whose expected cost is within a multiplicative factor O (log (1/ ε )) of the optimal. The dimension d is considered to be a fixed constant.
approximation algorithms combinatorial optimization matching

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