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A DefaultMultiEchelonCostFormulation whose cost rates vary by node. Every calculator uses the CostParams override registered for its owning node (keyed by node name), falling back to defaultParams for nodes without an override and for the external supplier's own outbound.
"Owning node" follows the same attribution the base formulation uses: an inventory's / backlog's / load-builder's holder, an outbound edge's supplier, and an inbound edge's customer. So, for example, raising a single retailer's carryingRate lifts only that retailer's holding cost; raising a warehouse's unloadingCost lifts only the cost of unloading shipments into that warehouse.
The override map is threaded into the base constructor as a resolver (rather than an overridden method) so it is already available when the base init block builds the calculators — avoiding the open-call-from-constructor initialization-order trap.
Like the base formulation, this attaches itself to network and must be constructed after the topology is final (the ordering / coverage guards enforce it).
Parameters
the network whose calculators this formulation manages
the fallback parameter bundle
per-node parameter overrides, keyed by node name
optional ModelElement name