Research Article
Multigraph Modeling for Urban Distribution of Emergency Commodities with Semisoft Time Windows under Uncertainty
Table 3
Definition of performance metrics.
| | Measure | Definition | Criterion | Formula |
| | NOS | Indicates the number of achieved solution in the Pareto front | L | — |
| | Spacing metric (SM) | Shows that whether the achieved solutions in the Pareto front are distributed evenly | S | |
| | Mean ideal distance (MID) | Presents the mean distance among the solutions of Pareto set from the ideal solution | S | |
| | Quality metric (QM) | Presents the contribution of the algorithm regarding to all nondominated solutions | L | |
| | Solving time (CPU time) | Running time of the algorithm | S | — |
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S: smaller value is better; L: larger value is better.
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