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This paper shows how scale efficiency can be measured from an arbitrary parametric hyperbolic distance function with multiple outputs and multiple inputs. It extends the methods introduced by Ray (J Product Anal 11:183–194, 1998), and Balk (J Product Anal 15:159–183, 2001) and Ray (2003) that measure scale efficiency from a single-output multi-input distance function and from a multi-output and multi-input...
This paper investigates the cost efficiency of the Vietnamese banking industry. To obtain an appropriate estimate of cost efficiency, monotonicity and concavity constraints are incorporated in the estimation of the cost frontier using the Bayesian approach. Overall, the level of cost efficiency of Vietnam's banking sector is relatively high, around 87 percent. The findings reveal minor and insignificant...
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