A.G. Chentsov, A.A. Chentsov, A.N. Sesekin. On the problem of sequential traversal of megalopolises with precedence conditions and cost functions depending on a list of tasks ... P. 235-248

A constrained routing problem with complicated cost functions is studied. The construction of the cost functions can be difficult, and therefore the stages of this construction are elements of the solution of the problem. This situation arises, in particular, in studying the engineering problem of dismantling radiation hazardous elements, where, in the framework of a problem statement traditional for discrete optimization, it takes an unacceptably long time to construct a cost matrix whose entries characterize the radiation doses received by performers at the stage of displacement and dismantling. It is assumed that, at the stage of the computational implementation of the resulting optimal algorithm, the corresponding “parts” of the matrix may be not fed to the computer’s memory but calculated as needed. Possible applications of the developed methods may be related to the problem of dismantling a decommissioned generator unit of an NPP.

Keywords: dynamic programming, route, Bellman function

Received June 21, 2020

Revised July 21, 2020

Accepted August 10, 2020

Funding Agency:  This work was supported by the Russian Foundation for Basic Research (project no. 19-01-00573) and is a part of the research carried out at the Ural Mathematical Center.

Alexander Georgievich Chentsov, Dr. Phys.-Math. Sci., Prof., Corresponding Member RAS. Krasovskii Institute of Mathematics and Mechanics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, 620108 Russia; Ural Federal University Yekaterinburg, 620002 Russia, e-mail: chentsov@imm.uran.ru

Aleksei Aleksandrovich Chentsov, Candidate of Phys.-Math. Sci. Krasovskii Institute of Mathematics and Mechanics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, 620108 Russia, e-mail: chentsov.a@binsys.ru

Alexander Nikolaevich Sesekin, Dr. Phys.-Math. Sci., Prof., Head of the Department of Applied Mathematics and Mechanics — Ural Federal University, Yekaterinburg, 620002 Russia.; Krasovskii Institute of Mathematics and Mechanics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, 620108 Russia, e-mail: a.n.sesekin@urfu.ru

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Cite this article as: A.G. Chentsov, A.A. Chentsov, A.N. Sesekin. On the problem of sequential traversal of megalopolises with precedence conditions and cost functions depending on a list of tasks, Trudy Instituta Matematiki i Mekhaniki URO RAN, 2020, vol. 26, no. 3, pp. 219–234.