Huisman, D.

problem train solution number vehicle model scheduling approach algorithm constraint movie railway station delay schedule depot column instance stock passenger timetable network result generation driver management heuristic table section research value column generation planning event train units lagrangian method example crew scheduling disruption figure process system arrival minute track operation paper transportation crew scheduling problem formulation computation time variable netherland decision departure stock circulation optimization objective route iteration piece period location computation maintenance huisman platform connection scenario capacity point core problem length movie j shunt circulation fi rst travel subproblem