bei Google ScholarTitelangaben
Heinz, Stefan ; Krumke, Sven O. ; Megow, Nicole ; Rambau, Jörg ; Tuchscherer, Andreas ; Vredeveld, Tjark:
The Online Target Date Assignment Problem.
In:
Erlebach, Thomas ; Persinao, Giuseppe (Hrsg.): Approximation and Online Algorithms. -
Berlin ; Heidelberg
: Springer
,
2006
. - S. 230-243
. - (Lecture Notes in Computer Science
; 3879
)
ISBN 978-3-540-32207-8
Abstract
Many online problems encountered in real-life involve a two-stage decision process: upon arrival of a new request, an irrevocable first-stage decision (the assignment of a specific resource to the request) must be made immediately, while in a second stage process, certain “subinstances” (that is, the instances of all requests assigned to a particular resource) can be solved to optimality (offline) later.
We introduce the novel concept of an Online Target Date Assignment Problem (OnlineTDAP) as a general framework for online problems with this nature. Requests for the OnlineTDAP become known at certain dates. An online algorithm has to assign a target date to each request, specifying on which date the request should be processed (e. g., an appointment with a customer for a washing machine repair). The cost at a target date is given by the downstream cost, the optimal cost of processing all requests at that date w. r. t. some fixed downstream offline optimization problem (e. g., the cost of an optimal dispatch for service technicians). We provide general competitive algorithms for the OnlineTDAP independently of the particular downstream problem, when the overall objective is to minimize either the sum or the maximum of all downstream costs. As the first basic examples, we analyze the competitive ratios of our algorithms for the particular academic downstream problems of bin-packing, nonpreemptive scheduling on identical parallel machines, and routing a traveling salesman.
Weitere Angaben
| Publikationsform: | Aufsatz in einem Buch |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Mathematisches Institut Fakultäten > Fakultät für Mathematik, Physik und Informatik > Mathematisches Institut > Lehrstuhl Wirtschaftsmathematik > Lehrstuhl Wirtschaftsmathematik - Univ.-Prof. Dr. Jörg Rambau Fakultäten > Fakultät für Mathematik, Physik und Informatik > Mathematisches Institut > Lehrstuhl Wirtschaftsmathematik |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 510 Mathematik |
| Eingestellt am: | 04 Jun 2014 08:52 |
| Letzte Änderung: | 07 Jun 2016 11:29 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/748 |