An improved online evacuation strategy from a convex region on grid networks

Guiqing Zhang (), Yongxi Cheng () and Lan Qin ()
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Guiqing Zhang: Xi’an Jiaotong University
Yongxi Cheng: Xi’an Jiaotong University
Lan Qin: Xi’an Jiaotong University

Journal of Combinatorial Optimization, 2018, vol. 36, issue 1, No 5, 44-54

Abstract: Abstract This study considers an evacuation problem where an evacuee tries to escape to the boundary of a convex affected area on a grid network. The boundary is unknown to the evacuee and cannot be identified until reaching an arbitrary point of it. We propose an online evacuation strategy with a competitive ratio less than 17.5, which improves the previously best result of 19.5.

Keywords: Evacuation strategy; Online algorithm; Competitive ratio; Grid networks (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s10878-018-0284-8

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