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arXiv · 0910.1643

Covering Points by Disjoint Boxes with Outliers

Hee-Kap Ahn·Sang Won Bae·Erik D. Demaine·Martin L. Demaine·Sang-Sub Kim·Matias Korman·Iris Reinbacher·Wanbin Son
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Abstract

For a set of n points in the plane, we consider the axis--aligned (p,k)-Box Covering problem: Find p axis-aligned, pairwise-disjoint boxes that together contain n-k points. In this paper, we consider the boxes to be either squares or rectangles, and we want to minimize the area of the largest box. For general p we show that the problem is NP-hard for both squares and rectangles. For a small, fixed number p, we give algorithms that find the solution in the following running times: For squares we have O(n+k log k) time for p=1, and O(n log n+k^p log^p k time for p = 2,3. For rectangles we get O(n + k^3) for p = 1 and O(n log n+k^{2+p} log^{p-1} k) time for p = 2,3. In all cases, our algorithms use O(n) space.

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Hee-Kap Ahn, Sang Won Bae, Erik D. Demaine, Martin L. Demaine, Sang-Sub Kim, Matias Korman, Iris Reinbacher, Wanbin Son. 2010-07-27. Covering Points by Disjoint Boxes with Outliers. https://arxiv.org/abs/0910.1643

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