2000 Fiscal Year Final Research Report Summary
Non-radial Measures of Efficiency and their Applications in Data Envelopment Analysis
| Project/Area Number |
11680445
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
社会システム工学
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| Research Institution | National Graduate Institute for Policy Studies |
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Principal Investigator |
TONE Kaoru Dept. of Policy Studies, National Graduate Institute for Policy Studies, Professor, 政策研究科, 教授 (00051235)
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| Project Period (FY) |
1999 – 2000
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| Keywords | DEA / Non-radial measure of efficiency / Super-efficiency / Adjusted projection / Site selection / Price-cap setting / 上限価格 |
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| Research Abstract |
I have completed five papers in this term of project. In the first paper, I demonstrated that the status of returns to scale in the BCC model is affected by adding weight restrictions and developed a new algorithm for identifying the RTS status. In the second paper, I discussed the issues of projection onto the frontiers in DEA.This task needs care when organizations with several different characteristics are involved. This paper discusses such situations and proposes a simple and practical method for coping with target setting in such mixed business environments. A method of "adjusted projection" is proposed which synthesizes a global view with local conditions. The third paper deals with the "super-efficiency" issue in DEA.I approached to this problem by using the slacks-based measure of efficiency (SBM) which I have proposed in my previous paper. This method differs from the traditional one based on the radial measure of efficiency, in that the former deals directly with slacks in inputs/outputs, while the latter does not take account of the existence of slacks. In the fourth paper, a national project of Japan, plans for the relocation of several government agencies out of Tokyo was discussed concentrating on the site selection problem. For this purpose, I proposed a consensus-making method for reaching a group decision, based on a combination of the AHP and the assurance region model of DEA.The last paper deals with the price-cap setting of NTT.Price-settings of public utilities are crucial societal matters. This paper describes how the cap was determined by referring to the cost efficiency model of DEA.
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