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What happens if/when shipments miss their ready times?
by mint2 7y ago
What happens if/when shipments miss their ready times?
- kragen 7y agoTypically you model this kind of thing in linear optimization as a hard constraint rather than a penalty, but you can model it as a penalty in mixed integer linear programming. It costs you two extra decision variables, one of which is binary.
- atak1 7y ago^ yes, penalties in the solver. Above post is correct. IRL they just get rolled and we treat it as a new problem with a different set of schedules.
- rkangel 7y agoPresumably there are contractual penalties associated with missing delivery times, that then map to the cost of doing things. In the real world if you can miss the deadline on one delivery, and that allows everything else to work much more simply and cheaply then that's probably the right call.