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| : | Number of Starting Origins (STOs) |
| : | Number of Final Destinations (FDs) |
| : | Number of Supplementary Origins (SOs) at level, |
| : | Number of labels for origins |
| : | Availability of goods at origin of STO |
| : | Availability of goods at origin of level SO, |
| : | Demand at node of FD |
| : | Carrying capacity of a vehicle from STO to FD |
| : | Transportation cost per unit commodity from origin to destination from STO to FD |
| : | Transportation cost per unit commodity for transportation from origin to destination from SO of level to FD where |
| : | Transportation cost per unit commodity for transportation from origin to destination from STO to SO of level, |
| : | Transportation cost per unit commodity for transportation from node of TO of level to node of TO of level, ; with |
| : | Carrying capacity of vehicle from SO of level to FD |
| : | Carrying capacity of vehicle from SO of level, , to SO of label, |
| : | Objective function for minimizing the transportation cost to the final destination from STO and all SO |
| : | Objective function for minimizing the transportation cost to label destination points from STO and all SO of label, |
| : | Decision variable of transportation from origin of STO to destination of FD |
| : | Decision variable of transportation from origin to destination from SO of level to FD |
| : | Decision variable of transportation from origin to destination from STO to SO of level, |
| : | Decision variable of transportation from node of TO of level to node of TO of level, ; with |
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