In the sampling unit, where \(v_{i_{3}}\)is the weight on the input
variable\({\ x}_{i_{3}j}\left(i_{3}=1,\ldots,I_{3}\right)\) . We
adopt \(\eta_{d_{2}}\) as the weight associated with the intermediate
measures of sample unit to the test
unit\(\ z_{d_{2}j}\left(d_{2}=1,2,\ldots,D_{2}\right)\). At the end,
the weight \(u_{r_{3}}\) is assigned to the output
variable\(\text{\ y}_{r_{3}j}\left(r_{3}=1,\ldots,R_{3}\right)\). We
show the efficiency of the sampling unit
by\(\ \theta_{0}^{\text{Sampling}\ \text{unit}}\). The efficiency of the
sampling unit is calculated using Model 2.