JACIII Vol.24 No.1 pp. 113-122
doi: 10.20965/jaciii.2020.p0113


Interval Data Envelopment Analysis for Inter-Group Data Usage

Tomoe Entani

University of Hyogo
7-1-28 Minatojima-Minamimachi, Chuo, Kobe 650-0047, Japan

March 20, 2019
October 16, 2019
January 20, 2020
interval efficiency, relative evaluation, efficient frontier, privacy concern

Organizations are interested in exploiting the data from the other organizations for better analyses. Therefore, the data related policies of organizations should be sensitive to the data privacy issue, which has been widely discussed recently. The present study is focused on inter-group data usage for a relative evaluation. This research is based on the data envelopment analysis (DEA), which is used to measure the efficiency of a decision making unit (DMU) relatively employed within a group. In DEA, establishing an efficient frontier consisting of efficient DMUs is essential. We can obtain the efficiency values of a DMU by projecting it to the efficient frontier, and including in the efficiency interval via the interval DEA. When the original data of multiple groups are not open to each other, the alternative is to exchange the information corresponding to the efficient frontiers to estimate the efficiency intervals of a DMU in such a manner that the alternative is in the other groups. Therefore, in this paper, we propose a method to replace the efficient frontier with a weight vector set, from which it is not possible to reconstruct the original data. Considering the weight vector sets of multiple groups, a DMU has three types of efficiency intervals: in its own group, in each of the other groups, and in the integrated group. They provide rich insights on the DMU from a broad perspective, and this encourages inter-group data usage. In this process, we focus on two types of information reduction: one is from the efficient frontier to the weight vector set, and the other is from a union of the groups to the integrated group.

Cite this article as:
T. Entani, “Interval Data Envelopment Analysis for Inter-Group Data Usage,” J. Adv. Comput. Intell. Intell. Inform., Vol.24 No.1, pp. 113-122, 2020.
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