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Table 1 The inputs and outputs of the DEA model

From: Investment performance measurement of new generation mobile communication networks based on dynamic DEA model

 I1 investment in wireless access network S1 mobile phone exchange capacity
 I2 investment in transmission network S2 size of carriers
 I3 investment in service networkADOPTION
 I4 investment in supporting network A1 customer size
 I5 investment in construction A2 customer size of cellular data service
  U1 calls duration per month
  U2 cellular data traffic per month
  R1 revenue per month
  R2 revenue of cellular data service per month