Our faculty and students established a model-based systems engineering approach for integrated product process design, including object-oriented models of system behavior and structure, and optimization-based tradeoff analysis. Have we found a guaranteed good one that is also fast? No. ISR is a recognized leader in decision making and operations research. But you would never be able to reach a good schedule with some rule-of-thumb.Īnd to iterate on a more familiar topic - the TSP (which in fact is a simpler problem than the real problem I discuss above) has had plenty of heuristics attached to it. I can assure you that the process works just fine - it takes a coffee break for the dedicated NP-hard production model to be ready with an almost optimal answer, and that's perfectly fine. Since time is crucial the actual model used provides a proven almost optimal ordering of tasks among many million possibilities, including some manual labour steps, and preventive maintenance actions while the process progresses. And since there are batches to be made, you get that lousy, time-consuming schedule over and over. A rule-of-thumb may take 1 second to reach a decision on the ordering of operations, but those will be extremely lousy, in the sense that the production cell would not be utilized well at all. City and state governments, companies and organizations, and even individual households all have to make decisions about how to respond. A global pandemic is also a local crisis. I have been part of a team that manufacture aircraft engine components. Edward Kaplan Brings Operations Research Tools to Local COVID-19 Decision Making. Using a sketchy model simply will not work, when decisions are complex. A rule-of-thumb can simply not be designed, as there are too many possible decisions that can be made, while only a handful are actually feasible as well as reasonable. Modestus: consider a model that is built to match organ donors and patients at a hospital, or a service company that wants to collaborate on the usage of freight trains or long-haul trucks.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |