An illustrative application of idea (imprecise Data Envelopment Analysis) to a Korean mobile telecommunication company
成果类型：
Article
署名作者：
Cooper, WW; Park, KS; Yu, G
署名单位：
University of Texas System; University of Texas Austin; University of Ulsan
刊物名称：
OPERATIONS RESEARCH
ISSN/ISSBN：
0030-364X
DOI：
10.1287/opre.49.6.807.10022
发表日期：
2001
页码：
807-820
关键词：
摘要：
Data Envelopment Analysis (DEA) models, as ordinarily employed, assume that the data for all inputs and outputs are known exactly. In some applications, however, a number of factors may involve imprecise data, which take forms such as ordinal rankings and knowledge only of bounds. Here we provide an example involving a Korean mobile telecommunication company. The Imprecise Data Envelopment Analysis (IDEA) method we use permits us to deal not only with imprecise data and exact data but also with weight restrictions as in the (now) widely used Assurance Region (AR) and cone-ratio envelopment approaches to DEA. We also show how to transform AR bounds on the variables, obtained from managerial assessments, for instance, into data adjustments. This involves an extended IDEA model, which we refer to as AR-IDEA. All these uses are illustrated by an example application directed to evaluate efficiencies of branch offices of a telecommunication company in Korea.