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Information Processing Letters
Volume 89, Issue 3, 14 February 2004, Pages 137-139
 
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doi:10.1016/j.ipl.2003.07.008    How to Cite or Link Using DOI (Opens New Window)
Copyright © 2003 Elsevier B.V. All rights reserved.

Computing all large sums-of-pairs in Image and the discrete planar two-watchtower problem*1

Boaz Ben-MosheE-mail The Corresponding Author, Paz CarmiE-mail The Corresponding Author and Matthew J. KatzCorresponding Author Contact Information, E-mail The Corresponding Author

Department of Computer Science, Ben-Gurion University, Beer-Sheva 84105, Israel

Received 29 May 2003; 
revised 15 July 2003. 
Communicated by P.M.B. Vitányi 
Available online 16 December 2003.

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Abstract

We observe that MatouImage ek's algorithm for computing all dominances for a set Image of n points in Image can be employed for computing all pairs of points in such a set whose sum is greater or equal to a given point Image . We apply this observation to the decision problem of the discrete planar two-watchtower problem and obtain an improved solution.

Author Keywords: Algorithms; Computational geometry; Facility location


Information Processing Letters
Volume 89, Issue 3, 14 February 2004, Pages 137-139
 
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