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2020 | OriginalPaper | Buchkapitel

Efficient Algorithms for the Routing Open Shop with Unrelated Travel Times on Cacti

verfasst von : Ilya Chernykh, Olga Krivonogova

Erschienen in: Optimization and Applications

Verlag: Springer International Publishing

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Abstract

The object of investigation is the routing open shop problem, in which a fleet of machines have to visit all the nodes of a given transportation network to perform operations on some jobs located at those nodes. Each machine has to visit each node, to process each job and to return back to the common initial location—the depot. Operations of each job can be processed in an arbitrary sequence, any machine may perform at most one operation at a time. The goal is to construct a feasible schedule to minimize the makespan. The routing open shop problem is known to be NP-hard even in the simplest two-machine case with the transportation network consisting of just two nodes (including the depot). We consider a certain generalization of this problem in which travel times are individual for each of the two machines and the structure of the transportation network is an arbitrary cactus. We generalize an instance reduction algorithm known for the problem on a tree with identical travel times, and use it to describe new polynomially solvable cases for the problem, as well as an efficient approximation algorithm for another special case with a tight approximation ratio guarantee.

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Literatur
1.
Zurück zum Zitat Aksyonov, V.: An approximation polynomial time algorithm for one scheduling problem. Upravlyaemye systemy 28, 8–11 (1988). (in Russian) Aksyonov, V.: An approximation polynomial time algorithm for one scheduling problem. Upravlyaemye systemy 28, 8–11 (1988). (in Russian)
6.
Zurück zum Zitat Chernykh, I., Krivonogiva, O.: Optima localization for the two-machine routing open shop on a tree (2019). (in Russian), submitted to Diskretnyj Analiz i Issledovanie Operacij Chernykh, I., Krivonogiva, O.: Optima localization for the two-machine routing open shop on a tree (2019). (in Russian), submitted to Diskretnyj Analiz i Issledovanie Operacij
9.
Zurück zum Zitat Chernykh, I., Lgotina, E.: Two-machine routing open shop on a tree: instance reduction and efficiently solvable subclass (2019), submitted to Optimization Methods and Software Chernykh, I., Lgotina, E.: Two-machine routing open shop on a tree: instance reduction and efficiently solvable subclass (2019), submitted to Optimization Methods and Software
10.
Zurück zum Zitat Chernykh, I., Pyatkin, A.: Irreducible bin packing: complexity, solvability and application to the routing open shop. LNCS (2019, to appear) Chernykh, I., Pyatkin, A.: Irreducible bin packing: complexity, solvability and application to the routing open shop. LNCS (2019, to appear)
18.
Metadaten
Titel
Efficient Algorithms for the Routing Open Shop with Unrelated Travel Times on Cacti
verfasst von
Ilya Chernykh
Olga Krivonogova
Copyright-Jahr
2020
DOI
https://doi.org/10.1007/978-3-030-38603-0_1