The Second Generation DEA

本研究分为两个部分：(1)生产经济学与DEA的边界区域；(2)博弈论与DEA。关于第一个研究目标，我们研究了规模经济和拥堵。为此，我们成功地在非参数框架中定义了规模经济的程度，并表明负的规模经济程度表明拥堵。所以，我们完全解决了这个问题。该研究结果发表在EJOR（2004）的论文中。此外，我们使用Tone (2001) JOR论文中开发的新成本效率模型调查了印度人寿保险公司的成本效率。研究结果发表在SEPS（2005）论文上。作为DEA和AHP的结合，我们将它们应用于日本政府机构迁出东京的比较选址评估研究，并确定了两个最有前景的地点。研究结果发表在《美国医学与社会科学杂志》（2003）上。这篇论文在SEPS最热的25篇文章中排名16^< >。作为第二个研究课题，我们将DEA的基本概念融入到合作博弈论中，创建了DEA博弈。该方案有助于在多标准环境下达成参与者之间的共识。研究结果将发表在Omega （International Journal of Management Science）杂志上。

This research consists of two parts : (i)boundary area between production economics and DEA, and (2)game theory and DEA. Regarding the first research objective, we studied scale economies and congestion. For this purpose, we succeeded in defining the degree of scale economies in the non-parametric framework and showed that a negative degree of scale economies indicates congestion. So, we completely solved this problem. This results were published in EJOR (2004) paper. Furthermore, we investigated cost efficiency of Life Insurance Corporation of India using the new cost efficiency model developed in Tone (2001) JOR paper. The results were published in SEPS (2005) paper. As a combination of DEA and AHP, we applied them for a comparative site evaluation study for relocating Japanese government agencies out of Tokyo and fixed two most promising sites. The results were published in SEPS (2003) paper. This paper raked as the 16^<th> in Top 25 Hottest Articles in SEPS.As the second research subject, we incorporated the basic concept of DEA into cooperative game theory and created DEA Game. This scheme can contribute to make a consensus among players under multiple criteria environment The results will be published in Omega (International Journal of Management Science).