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Decentralized subcontractor scheduling with divisible jobs

Hezarkhni, Behzad; Kubiak, Wieslaw


Behzad Hezarkhni

Wieslaw Kubiak


Subcontracting allows manufacturer agents to reduce completion times of their jobs and thus obtain savings. This paper addresses the coordination of decentralized scheduling systems with a single subcontractor and several agents having divisible jobs. Assuming complete information, we design parametric pricing schemes that strongly coordinate this decentralized system, i.e., the agents’ choices of subcontracting intervals always result in efficient schedules. The subcontractor’s revenue under the pricing schemes depends on a single parameter which can be chosen to make the revenue as close to the total savings as required. Also, we give a lower bound on the subcontractor’s revenue for any coordinating pricing scheme. Allowing private information about processing times, we prove that the pivotal mechanism is coordinating, i.e., agents are better off by reporting their true processing times, and by participating in the subcontracting. We show that the subcontractor’s maximum revenue with any coordinating mechanism under private information equals the lower bound of that with coordinating pricing schemes under complete information. Finally, we address the asymmetric case where agents obtain savings at different rates per unit reduction in completion times. We show that coordinating pricing schemes do not always exist in this case.


Hezarkhni, B., & Kubiak, W. (2015). Decentralized subcontractor scheduling with divisible jobs. Journal of Scheduling, 18(5), doi:10.1007/s10951-015-0432-2

Journal Article Type Article
Publication Date Jun 2, 2015
Deposit Date Dec 23, 2015
Publicly Available Date Dec 23, 2015
Journal Journal of Scheduling
Print ISSN 1094-6136
Electronic ISSN 1099-1425
Publisher Humana Press
Peer Reviewed Peer Reviewed
Volume 18
Issue 5
Keywords Scheduling, Divisible jobs, Subcontracting, Coordination, Mechanism design
Public URL
Publisher URL
Copyright Statement Copyright information regarding this work can be found at the following address:


art%3A10.1007%2Fs10951-015-0432-2.pdf (751 Kb)

Copyright Statement
Copyright information regarding this work can be found at the following address:

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