Journal of the Japan Society of Erosion Control Engineering, Vol.59,No.1,2006
Construction of the large scale problem adaptation system of DEA,
and a setup of the sediment]related disaster dangerous place ranking using
it
Yuuki INABA Hiroyuki OHISHI Shigemitsu SUGIHARA Hiroaki TAKEMOTO Kohei FURUKAWA
Abstract
Contrary to expectation, there has not been much progress to date as far as the
construction of countermeasures against sediment]related disasters is concerned.
In order to advance these construction projects efficiently, it is important to
examine the risk]ranking of dangerous spots for sediment]related disasters in
order to determine construction priorities. However, there is currently no unified
analytical technique to address this issue and this poses a problem to each self]governing
body. As a method to solve this problem, the risk]ranking determination method
for public works using Data Envelopment Analysis (DEA) is proposed. However, since
DEA is an analytical method that searches for the relative efficiency of data,
one of its drawbacks is the long computational time. In order to perform an investigation
involving a large number of data, such as in the analysis of dangerous spots for
sediment]related disasters, it is therefore necessary to examine the new calculation
model for the purpose of increasing its processing efficiency.
In this study, a distributed computational model that enabled the processing of
large amount of data by DEA was examined. Moreover, this computational model was
applied to the determination of ranking of dangerous spots within Yamaguchi Prefecture
regarding sediment]related disasters.
Key words: Data Envelopment Analysis, sediment]related disaster, calculation model
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