A deterministic algorithm for fitting a step function to a weighted point-set

Details A deterministic algorithm for fitting a step function to a weighted point-set A deterministic algorithm for fitting a step function to a weighted point-set

2011-09-06

arxiv.org/abs/1109.1152v1

Computer Science

Data Structures and Algorithms

5 pages, 2 figures

Scientific paper

Given a set of n points in the plane, each point having a positive weight, and an integer k>0, we present an optimal O(n \log n)-time deterministic algorithm to compute a step function with k steps that minimizes the maximum weighted vertical distance to the input points. It matches the expected time bound of the best known randomized algorithm for this problem. Our approach relies on Cole's improved parametric searching technique.

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