From: A firm-specific Malmquist productivity index model for stochastic data envelopment analysis: an application to commercial banks
Period 1
Period 2
\({x}_{1}^{(1)}\)
\({y}_{1}^{(1)}\)
\({x}_{1}^{(2)}\)
\({y}_{1}^{(2)}\)
DMU1
0.2
0.3
0.1
DMU2
0.4