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Mathematics > Optimization and Control

arXiv:1812.00664 (math)
[Submitted on 3 Dec 2018]

Title:Stochastic project management: Multiple projects with multi-skilled human resources

Authors:Thomas Felberbauer, Walter Gutjahr, Karl Doerner
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Abstract:This paper presents two stochastic optimization approaches for simultaneous project scheduling and personnel planning, extending a deterministic model previously developed by Heimerl and Kolisch. For the problem of assigning work packages to multi-skilled human resources with heterogeneous skills, the uncertainty on work package processing times is addressed. In the case where the required capacity exceeds the available capacity of internal resources, external human resources are used. The objective is to minimize the expected external costs. The first solution approach is a 'matheuristic' based on a decomposition of the problem into a project scheduling subproblem and a staffing subproblem. An iterated local search procedure determines the project schedules, while the staffing subproblem is solved by means of the Frank-Wolfe algorithm for convex optimization. The second solution approach is Sample Average Approximation where, based on sampled scenarios, the deterministic equivalent problem is solved through mixed integer programming. Experimental results for synthetically generated test instances inspired by a real-world situation are provided, and some managerial insights are derived.
Comments: Stochastic optimization, Project scheduling, Personnel planning, Heterogeneous skills, Iterated local search
Subjects: Optimization and Control (math.OC)
MSC classes: 90B36
Cite as: arXiv:1812.00664 [math.OC]
  (or arXiv:1812.00664v1 [math.OC] for this version)
  https://doi.org/10.48550/arXiv.1812.00664
Related DOI: https://doi.org/10.1007/s10951-018-0592-y

Submission history

From: Thomas Felberbauer [view email]
[v1] Mon, 3 Dec 2018 11:06:59 UTC (666 KB)
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