首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Efficiency decomposition in two-stage data envelopment analysis: An application to non-life insurance companies in Taiwan
Authors:Chiang Kao  Shiuh-Nan Hwang
Institution:1. Department of Industrial and Information Management, National Cheng Kung University, Tainan, Taiwan, ROC;2. Graduate School of Management, Ming Chuan University, Taipei, Taiwan, ROC
Abstract:The efficiency of decision processes which can be divided into two stages has been measured for the whole process as well as for each stage independently by using the conventional data envelopment analysis (DEA) methodology in order to identify the causes of inefficiency. This paper modifies the conventional DEA model by taking into account the series relationship of the two sub-processes within the whole process. Under this framework, the efficiency of the whole process can be decomposed into the product of the efficiencies of the two sub-processes. In addition to this sound mathematical property, the case of Taiwanese non-life insurance companies shows that some unusual results which have appeared in the independent model do not exist in the relational model. In other words, the relational model developed in this paper is more reliable in measuring the efficiencies and consequently is capable of identifying the causes of inefficiency more accurately. Based on the structure of the model, the idea of efficiency decomposition can be extended to systems composed of multiple stages connected in series.
Keywords:Data envelopment analysis  Efficiency  Decomposition  Tandem system
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号