This paper analyzes productivity with a directional distance function model by investigating convexity and non …-convexity in the Chinese banking sector. Two primary findings are summarized. First, there is a distinct change in productivity … experience local versus global technological change is small, indicating that productivity changes are driven by national rather …

To insure a proper and meaningful productivity assessment of DMUs with different production technologies, this article … develops a difference-based profit metafrontier Luenberger productivity indicator. Adopting the proposed model, we empirically … measure the profit inefficiency and examine the profit productivity convergence for samples banks consisting of 31 Taiwanese …