We present a new Lagrangian-based heuristic for solving large-scale set-covering problems arising from crew-scheduling at the Italian Railways (Ferrovie dello Stato). Our heuristic obtained impressive results when compared to state-of-the-art codes on a test-bed provided by the company, which includes instances with sizes ranging from 50,000 variables and 500 constraints to 1,000,000 variables and 5000 constraints.
Titolo: | A Lagrangian-based Heuristic for Large-scale Set Covering Problems |
Autori: | |
Data di pubblicazione: | 1998 |
Rivista: | |
Abstract: | We present a new Lagrangian-based heuristic for solving large-scale set-covering problems arising from crew-scheduling at the Italian Railways (Ferrovie dello Stato). Our heuristic obtained impressive results when compared to state-of-the-art codes on a test-bed provided by the company, which includes instances with sizes ranging from 50,000 variables and 500 constraints to 1,000,000 variables and 5000 constraints. |
Handle: | http://hdl.handle.net/11587/107186 |
Appare nelle tipologie: | Articolo pubblicato su Rivista |
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