739656.fig.002a
(a) The optimal travel cost of the SODNDP-RC1
739656.fig.002b
(b) The optimal travel cost of the SODNDP-AARC1
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(c) The relative improvement of the optimal objective value of the SODNDP-RC1 against SODNDP-AARC1
Figure 2: The optimal objective value of the SODNDP-RC1 and SODNDP-AARC1 models, and the relative improvement of the optimal objective value of the SODNDP-RC1 against SODNDP-AARC1 under different available budgets and uncertainty levels.