New lower and upper bounds for on-line scheduling

Autor: Gerhard J. Woeginger, Bo Chen, André van Vliet
Jazyk: angličtina
Rok vydání: 1994
Předmět:
Zdroj: Operations Research Letters, 16(4), 221-230. Elsevier
ISSN: 0167-6377
DOI: 10.1016/0167-6377(94)90071-x
Popis: We investigate the problem of on-line scheduling a set of independent jobs on m parallel and identical machines with the objective of minimizing the overall finishing time. In this note, we are mainly interested in the cases where m is small. We derive results on the inevitable worst-case deviations from the optimum as encountered by any on-line algorithm. For m = 2 and m = 3, Graham's List Scheduling heuristic is known to be best possible. For m = 4, we will derive almost matching upper and lower bounds on the best possible worst-case guarantee for any on-line algorithm.
Databáze: OpenAIRE