Column generation solves a lexicographic multi-objective technician routing problem for electric utilities, proving optimality on more small instances and outperforming compact MILP on larger real-life cases.
The big-M method with the numerical infi- nite M.Optim Lett, 15(7):2455–2468
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A column-generation approach for an electricity technician routing and scheduling problem with a lexicographic objective
Column generation solves a lexicographic multi-objective technician routing problem for electric utilities, proving optimality on more small instances and outperforming compact MILP on larger real-life cases.