以隨機成本邊界函數分析本國銀行的規模與多元經濟

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Title:	以隨機成本邊界函數分析本國銀行的規模與多元經濟
Other Titles:	Estimating Scale and Scope Economics in Taiwan's Banking Sector Using a Stochastic Frontier Cost Function
Authors:	黃台心
Contributors:	淡江大學經濟學系
Keywords:	經濟效率;規模經濟;多元經濟;Economic efficiency;Scale economy;Scope economy
Date:	1998-06
Issue Date:	2009-11-30 18:38:57 (UTC+8)
Publisher:	臺灣大學經濟學系
Abstract:	過去研究銀行廠商成本效率（包括規模與多元經濟）者，皆未考量廠商的經濟無效率（包括技術與配置無效率二種），簡稱x效率。換言之，這些研究者假設廠商已達效率邊界，在此效率邊界上衡量成本效率。如此，成本效率與x效率兩種因素相互混淆，使估計結果產生偏誤。本研究使用隨機成本邊界模型，同時將成本效率與x效率包含進來，使成本效率的估計結果不受x效率的影響。研究結果顯示，我國銀行廠商具有規模與多元經濟；若模型中不包含x效率，將會低估規模與多元經濟，其中以後者所受影響較大。 Most studies on the economies of scale and scope in banking assume no x-inefficiencies, that is, banks are always on their efficient frontier. This could confound scale and scope efficiencies with x-efficiencies. The current paper employs a stochastic frontier cost function incorporating technical and allocative inefficiencies as well as a system of share equations to estimate scale and scope efficiencies. Using data from Taiwan`s banking sector, evidence is found that the assumption of no x-inefficiencies results in underestimating scale and scope economies.
Relation:	經濟論文叢刊 26(2)，頁 209-241
Appears in Collections:	[Graduate Institute & Department of Economics] Journal Article

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