Title
Minimizing value-at-risk in single-machine scheduling
Abstract
The vast majority of the machine scheduling literature focuses on deterministic problems in which all data is known with certainty a priori. In practice, this assumption implies that the random parameters in the problem are represented by their point estimates in the scheduling model. The resulting schedules may perform well if the variability in the problem parameters is low. However, as variability increases accounting for this randomness explicitly in the model becomes crucial in order to counteract the ill effects of the variability on the system performance. In this paper, we consider single-machine scheduling problems in the presence of uncertain parameters. We impose a probabilistic constraint on the random performance measure of interest, such as the total weighted completion time or the total weighted tardiness, and introduce a generic risk-averse stochastic programming model. In particular, the objective of the proposed model is to find a non-preemptive static job processing sequence that minimizes the value-at-risk (VaR) of the random performance measure at a specified confidence level. We propose a Lagrangian relaxation-based scenario decomposition method to obtain lower bounds on the optimal VaR and provide a stabilized cut generation algorithm to solve the Lagrangian dual problem. Furthermore, we identify promising schedules for the original problem by a simple primal heuristic. An extensive computational study on two selected performance measures is presented to demonstrate the value of the proposed model and the effectiveness of our solution method.
Year
DOI
Venue
2017
https://doi.org/10.1007/s10479-016-2251-z
Annals of Operations Research
Keywords
Field
DocType
Single-machine scheduling,Stochastic scheduling,Value-at-risk,Probabilistic constraint,Stochastic programming,Scenario decomposition,Cut generation,Dual stabilization,K,-assignment problem
Mathematical optimization,Single-machine scheduling,Fair-share scheduling,Nurse scheduling problem,Decomposition method (constraint satisfaction),Rate-monotonic scheduling,Lagrangian relaxation,Dynamic priority scheduling,Stochastic programming,Mathematics
Journal
Volume
Issue
ISSN
248
1
0254-5330
Citations 
PageRank 
References 
4
0.43
33
Authors
3
Name
Order
Citations
PageRank
semih atakan1171.07
Kerem Bulbul2719.69
Nilay Noyan318413.93