Modelling a multi-period production process: Evidence from the Japanese regional banks

This paper applies the additive relational network DEA model to examine multi-period efficiency and productivity of Regional Banks I II in Japan between 2002 2017. The examined timeframe covers two turbulent periods; Global Financial Crisis economic recession aftermath Great East Earthquake. We extend into a structure order evaluate overall for time period question, as well annual efficiencies. show that can be expressed weighted average In addition, we implications different returns scale assumptions. newly proposed is able calculate common-weight Malmquist Productivity Indices. results reveal dispersion inefficiency levels Japanese general, difference particular. Furthermore, caused significant negative effect on growth technical progress Banks, while Earthquake had change.