Traditional Data Envelope Analysis (DEA) neglects uncertainty for the input-output variables by treating the observations as if they were the true input-output variables to select reference units for efficiency estimation and performance benchmarking. In stochastic environments, the traditional...

The high frequency of mobile phone users affect the competitive conditions of telecommunication services operators. Mobile phone users tend to search for telecommunication operators that provide price/tariff economically in accordance with demands they want. As one of telecommunication...