Budai-Balke, G.

maintenance planning problem production railway model heuristic schedule algorithm train solution period system station scheduling project number track possession opportunity activity execution stock inventory result process instance maintenance works ga opp maintenance activities method research figure failure value operation type t search time periods section maintenance scheduling problem infrastructure planning horizon maintenance costs memetic chapter planning period chromosome memetic algorithm maintenance work tabu search interval order input approach horizon operator constraint memetic algorithms optimization cycle article quality mutation phase stock schedule component composition time period paper policy inspection dekker decision execution times journal length population production process maintenance planning