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JDR Vol.12 No.2 pp. 347-354
(2017)
doi: 10.20965/jdr.2017.p0347

Paper:

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Difference Operators in Simulation Data Warehouses

Jing Zhao†, Yoshiharu Ishikawa, Yukiko Wakita, and Kento Sugiura

Graduate School of Information Science, Nagoya University
Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan

†Corresponding author

Received:
October 16, 2016
Accepted:
March 3, 2017
Online released:
March 16, 2017
Published:
March 20, 2017
Keywords:
data warehouse, difference operator, spatio-temporal databases, disaster information, simulation data
Abstract

In analyzing observation data and simulation results, there are frequent demands for comparing more than one data on the same subject to detect any differences between them. For example, comparison of observation data for an object in a certain spatial domain at different times or comparison of spatial simulation data with different parameters. Therefore, this paper proposes the difference operator in spatio-temporal data warehouses, which store temporal and spatial observation data and simulation data. The requirements for the difference operator are summarized, and the approaches to implement them are presented. In addition, the proposed approach is applied to the mass evacuation of simulation data in a tsunami disaster, and its effectiveness is verified. Extensions of the difference operator and their applications are also discussed.

Cite this article as:
J. Zhao, Y. Ishikawa, Y. Wakita, and K. Sugiura, “Difference Operators in Simulation Data Warehouses,” J. Disaster Res., Vol.12, No.2, pp. 347-354, 2017.
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