Group Malmquist Productivity Index for Two Time Periods An Application for Ranking Departments of University

This paper introduces an investigate group Malmquist productivity index for two time periods, that find measuring, to enable the decision making units internal efficiencies from those associated with their group characteristics for two time periods. Like the conventional Malmquist productivity index, it can also be decomposed into two indices, first for the comparison of efficiency changing and another index for comparison of technological change. We construct a computational method for extension of the Malmquist index group A in relation to group B of time t to time t+1. The utilization of the proposed approach is demonstrated with an illustrative example with real data.