Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/63855
Title: An Improved Approximation Algorithm for the s-t Path Movement Problem
Authors: Wattana Jindaluang
Jakarin Chawachat
Varin Chouvatut
Jittat Fakcharoenpho
Sanpawat Kantabutra
Issue Date: 2017
Publisher: Science Faculty of Chiang Mai University
Abstract: This paper considers a movement problem that minimizes the maximum movement of pebbles on a graph to form a path from source vertex to destination vertex . The best known algorithm for this problem is a 7-approximation algorithm developed by Berman, Demaine, and Zadimoghaddam in 2011. We refine the analysis of Berman et al. to obtain an -approximation algorithm for any constant . This problem is a subroutine used by Berman et al. for finding a solution to the connectivity movement problem. Using our improved algorithm as a subroutine, the approximation ratio for the connectivity movement problem improves from 136 to .
URI: http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=7681
http://cmuir.cmu.ac.th/jspui/handle/6653943832/63855
ISSN: 0125-2526
Appears in Collections:CMUL: Journal Articles

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