Abstract
This study evaluates the efficiency of twenty one manufacturers of Light Emitting Diodes (LED) in Taiwan from 2003 to 2006 through three types of DEA models, BCC, Super-SBM, and Malmquist index. Due to the fact that the traditional DEA model can not address the problem of ranking when many DMUs have efficiency value of 1, Super-SBM-V model has been adopted. Furthermore, since the Taiwan LED manufacturers have depended on foreign trade, exchange rate gains or losses have a great influence on their operations. Reviewing both domestic and abroad studies show that the Malmquist productivity index has rarely been used to evaluate the influence of exchange rate gains or losses on LED manufacturers performances. This study adopted exchange rate gains or losses as a variable to examine the impact of these manufacturers’ productivity due to exchange rate gains or losses. Hopefully, the findings can serve as a reference for manufacturers to modify their developmental strategies. The findings of this study shows that exchange rate gains or losses in fact influenced performance. The connection between exchange rate gains or losses and operational efficiency has been strengthened on a yearly basis.
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