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Improved Polynomial Time Approximation Scheme for Capacitated Vehicle Routing Problem with Time Windows

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Optimization and Applications (OPTIMA 2018)

Abstract

The Capacitated Vehicle Routing Problem with Time Windows is the well-known combinatorial optimization problem having numerous valuable applications in operations research. In this paper, following the famous framework by M. Haimovich and A. Rinnooy Kan and technique by T. Asano et al., we propose a novel approximation scheme for the planar Euclidean CVRPTW. For any fixed \(\varepsilon >0\), the proposed scheme finds a \((1+\varepsilon )\)-approximate solution of CVRPTW in time

$$TIME(\mathrm {TSP},\rho ,n)+O(n^2)+O\left( e^{O\left( q\,\left( \frac{q}{\varepsilon }\right) ^3(p\rho )^2\log (p\rho )\right) }\right) ,$$

where q is the given vehicle capacity bound, p is the number of time windows for servicing the customers, and \(TIME(\mathrm {TSP},\rho ,n)\) is the time needed to find a \(\rho \)-approximate solution for an auxiliary instance of the metric TSP.

This research was supported by Russian Science Foundation, grant no. 14-11-00109.

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Notes

  1. 1.

    By construction, \(Q\subset X[S]\).

  2. 2.

    As it follows from Lemma 1.

  3. 3.

    Also known as Ferrers board.

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Correspondence to Michael Khachay .

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Khachay, M., Ogorodnikov, Y. (2019). Improved Polynomial Time Approximation Scheme for Capacitated Vehicle Routing Problem with Time Windows. In: Evtushenko, Y., Jaćimović, M., Khachay, M., Kochetov, Y., Malkova, V., Posypkin, M. (eds) Optimization and Applications. OPTIMA 2018. Communications in Computer and Information Science, vol 974. Springer, Cham. https://doi.org/10.1007/978-3-030-10934-9_12

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  • DOI: https://doi.org/10.1007/978-3-030-10934-9_12

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