本文以資料包絡分析法衡量2004年第一季至2008年第三季台灣商業銀行之效率與生產力，並以其代表銀行之經營績效。不同於過去文獻之處在於本文以前瞻之觀點（沈中華，2005）求出放款預期損失以衡量放款風險，作為放款過程中的非意欲產出。本文並利用Ray and Desli（1997）架構拆解Malmquist總要素生產力指數，探討銀行績效變動之來源，此外，亦將該拆解結果與Färe et al.（1994）拆解方式比較，發現在技術變動部分有明顯不同。本文並探討影響銀行效率之因素以及檢定不同類型銀行之生產力表現是否有顯著差異。

The purpose of this paper is to examine the efficiency and productivity change of Taiwan’s banks over 2004Q1-2008Q3 using data envelopment analysis. Unlike the literature of the past, this paper uses the forward-looking viewpoint to derive expected losses from loans to measure the credit risk. In addition, the loan expected loss is thought of as an undesirable output in the estimation of efficiency and productivity. On the other hand, this paper uses a VRS frontier benchmark (Ray and Desli, 1997) to analyze the sources of productivity change. This paper also compares this result with that of Färe et al.（1994）decomposition, and finds that the estimated technical changes of two approaches are significantly different. Further, this paper analyzes the factors influencing banks’ efficiency, and investigates the productivity differences between different ownerships.

1. 中文文獻
沈中華（2005）, 「銀行評比: 推估品質一致的盈餘」, 《金融風險管理季刊》, 1, 89–105。
沈中華與陳庭萱（2008）, 「台灣商業銀行修正呆帳提列後的成本效率實證研究」,《經濟論文》, 36, 221–247。
邱永和與陳玉涓（2007）, 「風險性資本與銀行效率之分析」,《管理與系統》, 14, 519–543。
高強, 黃旭男與Toshiyuki Sueyoshi（2003）, 《管理績效評估: 資料包絡分析法》, 華泰文化: 台北市。
莊忠柱與吳振國（2006）, 「台灣區農會信用部經營效率評估: 非意欲因素資料包絡分析法的應用」, 《東吳經濟商學學報》, 52, 1–26。
黃台心, 陳盈秀與陳珮欣（2007）, 「台灣地區本國銀行業長期效率的動態分析」,《經濟論文》, 35, 83–114。
曾昭玲, 陳世能與林俊宏（2005）, 「逾放比對銀行經營績效影響之多期性研究」,《台灣金融財務季刊》, 6, 41–68。
詹維玲與劉景中（2006）, 「金融自由化後台灣銀行的效率及生產力」, 《經濟論文》, 34, 251–300。
鄭秀玲與周群新（1998）, 「調整風險後之銀行效率分析: 台灣銀行業的實證研究」,《經濟論文叢刊》, 26, 337–366。

2. 英文文獻
Altunbas, Y., M. H. Liu, P. Molyneux, and R. Seth（2000）, “Efficiency and Risk in Japanese Banking,” Journal of Banking and Finance, 24, 1605–1628.
Balk, B. M.（2001）, “Scale Efficiency and Productivity Change,” Journal of Productivity Analysis, 15, 159–183.
Banker, R. D., A. Charnes, and W. W. Cooper（1984）, “Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis,” Management Science, 30, 1078–1092.
Berger, A. N. and R. DeYoung（1997）, “Problem Loans and Cost Efficiency in Commercial Banks,” Journal of Banking and Finance, 21, 849–870.
Berger, A. N. and D. B. Humphrey（1997）, “Efficiency of Financial Institutions: International Survey and Directions for Future Research,” European Journal of Operational Research, 98, 175–212.
Caves, D. W., L. R. Christensen, and W. E. Diewert（1982）, “The Economic Theory of Index Numbers and the Measurement of Input, Output, and Productivity,” Econometrica, 50, 1393–1414.
Chang, C. C.（1999）, “The Nonparametric Risk-Adjusted Efficiency Measurement: An Application to Taiwan’s Major Rural Financial Intermediaries,” American Journal of Agricultural Economics, 81, 902–913.
Chang, T. C. and Y. H. Chiu （2006）, “Affecting Factors on Risk-Adjusted Efficiency in Taiwan's Banking Industry,” Contemporary Economic Policy, 24, 634–648.
Charnes, A., W. W. Cooper, and E. Rhodes（1978）, “Measuring the Efficiency of Decision Making Units,” European Journal of Operational Research, 2, 429–444.
Chiu, Y. H. and Y. C. Chen（2009）, “The Analysis of Taiwanese Bank Efficiency: Incorporating Both External Environment Risk and Internal Risk,” Economic Modelling, 26, 456–463.
Farrell, M. J.（1957）, “The Measurement of Productive Efficiency,” Journal of the Royal Statistical Society. Series A（General）, 120, 253–290.
Färe, R., S. Grosskopf, M. Norris, and Z. Zhang（1994）, “Productivity Growth, Technical Progress, and Efficiency Change in Industrialized Countries,” American Economic Review, 84, 66–83.
Färe, R. and S. Grosskopf（2004）, “Modeling Undesirable Factors in Efficiency Evaluation: Comment,” European Journal of Operational Research, 157, 242–245.
Färe, R., S. Grosskopf and W. L. Weber（2004）, “The Effect of Risk-Based Capital Requirements on Profit Efficiency in Banking,” Applied Economics, 36, 1731–1743.
Fukuyama, H. and W. L. Weber（2008）, “Japanese Banking Inefficiency and Shadow Pricing,” Mathematical and Computer Modelling, 48, 1854–1867.
Girardone, C., P. Molyneux, and E. P. M. Gardener（2004）, “Analysing the Determinants of Bank Efficiency: the Case of Italian Banks,” Applied Economics, 36, 215–227.
Kao, C. and S. T. Liu（2004）, “Predicting Bank Performance with Financial Forecasts: A Case of Taiwan Commercial Banks,” Journal of Banking and Finance, 28, 2353–2368.
Liang, C. J. and M. L. Yao（2008）, “The Impact of Non-Performing Loans on Bank’s Operating Efficiency for Taiwan Banking Industry,” Review of Pacific Basin Financial Markets and Policies, 11, 287–304.
Lozano-Vivas, A., J. T. Pastor, and J. M. Pastor（2002）, “An Efficiency Comparison of European Banking Systems Operating under Different Environmental Conditions,” Journal of Productivity Analysis, 18, 59–77.
Matthews, K. and N. Zhang（2008）, “The Productivity Growth of Chinese Banks: 1997-2006,” Paper Presented at 2008 Asia-Pacific Productivity Conference.
Mukherjee, K., S. C. Ray, and S. M. Miller（2001）, “Productivity Growth in Large US Commercial Banks: The Initial Post-Deregulation Experience,” Journal of Banking and Finance, 25, 913–939.
Park, K. H. and W. L. Weber（2006）, “A Note on Efficiency and Productivity Growth in the Korean Banking Industry, 1992–2002,” Journal of Banking and Finance, 30, 2371–2386.
Ray, S.C. and E. Desli（1997）, “Productivity Growth, Technical Progress, and Efficiency Change in Industrialized Countries: Comment,” American Economic Review, 87, 1033–1039.
Seiford, L. M. and J. Zhu（2002）, “Modeling Undesirable Factors in Efficiency Evaluation,” European Journal of Operational Research, 142, 16–20.
Shephard, R.W.（1970）, Theory of Cost and Production Functions, Princeton University Press, Princeton.
Tortosa-Ausina, E., E. Grifell-Tatjé , C. Armero, and D. Conesa（2008）, “Sensitivity Analysis of Efficiency and Malmquist Productivity Indices: An Application to Spanish Savings Banks,” European Journal of Operational Research, 184, 1062–1084.
Xue, M. and P. T. Harker（2002）, “Note: Ranking DMUs with Infeasible Super-Efficiency DEA Models,” Management Science, 48, 705–710.