Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 431550
Title Constraint-based Local Search for Inventory Control Under Stochastic Demand and Lead Time
Author(s) Rossi, R.; Tarim, S.A.; Bollapragada, R.
Source INFORMS journal on computing 24 (2012)1. - ISSN 1091-9856 - p. 66 - 80.
Department(s) WASS
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) service-level constraints - lot-sizing problem - management - policies - systems - model
Abstract In this paper, we address the general multiperiod production/inventory problem with nonstationary stochastic demand and supplier lead time under service-level constraints. A replenishment cycle policy is modeled. We propose two hybrid algorithms that blend constraint programming and local search for computing near-optimal policy parameters. Both algorithms rely on a coordinate descent local search strategy; what differs is the way this strategy interacts with the constraint programming solver. These two heuristics are first, compared for small instances against an existing optimal solution method. Second, they are tested and compared with each other in terms of solution quality and run time on a set of larger instances that are intractable for the exact approach. Our numerical experiments show the effectiveness of our methods.
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