NDLI: Capacitated Refuge Assignment for Speedy and Reliable Evacuation

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Capacitated Refuge Assignment for Speedy and Reliable Evacuation

Content Provider	MDPI
Author	Hara, Takanori Sasabe, Masahiro Matsuda, Taiki Kasahara, Shoji
Copyright Year	2020
Description	When a large-scale disaster occurs, each evacuee should move to an appropriate refuge in a speedy and safe manner. Most of the existing studies on the refuge assignment consider the speediness of evacuation and refuge capacity while the safety of evacuation is not taken into account. In this paper, we propose a refuge assignment scheme that considers both the speediness and safety of evacuation under the refuge capacity constraint. We first formulate the refuge assignment problem as a two-step integer linear program (ILP). Since the two-step ILP requires route candidates between evacuees and their possible refuges, we further propose a speedy and reliable route selection scheme as an extension of the existing route selection scheme. Through numerical results using the actual data of Arako district of Nagoya city in Japan, we show that the proposed scheme can improve the average route reliability among evacuees by 13.6% while suppressing the increase of the average route length among evacuees by 7.3%, compared with the distance-based route selection and refuge assignment. In addition, we also reveal that the current refuge capacity is not enough to support speedy and reliable evacuation for the residents.
Starting Page	442
e-ISSN	22209964
DOI	10.3390/ijgi9070442
Journal	ISPRS International Journal of Geo-Information
Issue Number	7
Volume Number	9
Language	English
Publisher	MDPI
Publisher Date	2020-07-16
Access Restriction	Open
Subject Keyword	ISPRS International Journal of Geo-Information Isprs International Journal of Geo-information Transportation Transportation Science and Technology Capacitated Refuge Assignment Speedy and Reliable Evacuation Route Selection Integer Linear Programming (ilp)
Content Type	Text
Resource Type	Article

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