Kybernetika 58 no. 5, 816-841, 2022

Minimizing maximum lateness in two-stage projects by tropical optimization

Nikolai Krivulin and Sergeĭ SergeevDOI: 10.14736/kyb-2022-5-0816

Abstract:

%Abstract of the paper (not exceeding 250 words) summarizing the principle %technique and conclusions. Because the abstract must be able to stand independently, mathematical formulas and bibliographical references %should be kept to a minimum. We are considering a two-stage optimal scheduling problem, which involves two similar projects with the same starting times for workers and the same deadlines for tasks. It is required that the starting times for workers and deadlines for tasks should be optimal for the first-stage project and, under this condition, also for the second-stage project. Optimality is measured with respect to the maximal lateness (or maximal delay) of tasks, which has to be minimized. We represent this problem as a problem of tropical pseudoquadratic optimization and show how the existing methods of tropical optimization and tropical linear algebra yield a full and explicit solution for this problem.

Keywords:

tropical optimization, tropical linear algebra, minimax optimization problem, project scheduling, maximum lateness

Classification:

90C24, 15A80, 90C47, 90B50, 90B35

paper.pdf

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