
This thesis puts forth an algorithm for solving the flexible job shop scheduling problem. The algorithm consist of a subgradient search and of a list scheduling heuristic, which is designed to generate feasible solutions deriving from the infeasible solutions we obtain from the subgradient search. Several methods for so-called price discrimination are introduced and their effects on the subgradient search are examined. The list scheduling heuristic uses a priority function to rank operations and creates a schedule that does not violate any constraints. Implementation in Java was written to test the method. The results of testing the algorithm on realistic industrial data are shown, compared to results from other programs and interpreted.
Diese Masterarbeit legt einen Algorithmus zum Lösen des flexiblen job shop scheduling Problems mit Transportzeiten vor. Dieser Algorithmus besteht aus einem Subgradientenverfahren und einer List Scheduling Heuristic, welche das Ergebnis des Subgradientenverfahrens in einen zulässigen Ablaufplan verändert. Es werden drei Methoden zur sogenannten Preis Diskriminierung vorgestellt und ihr Einfluss auf die Qualität der Ergebnisse untersucht. Außerdem wurde der Algorithmus in Java programmiert und an realitätsnahen Probleminstanzen getestet. Die Ergebnisse werden interpretiert und mit den Ergebnissen anderer Algorithmen verglichen.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
