Research Article
A Data-Driven and Knowledge-Driven Method towards the IRP of Modern Logistics
Table 2
Relations employed in the domain ontology.
| Relationship | Explanation | Instance |
| Extension | A class is a subclass of another class. | Owl:thing←(drugstore, LDC, delivery center) deliveryMode←(daily_truck, express) | Aggregation | A class consists of more than one class. | DeliveryCost←(transportcost, Inventorycost, customer_satisfication_cost) | Dependency | A class needs to use another class. | Dailysell is affected by the weather. |
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