home submit paper guide for authors contact us register search archive current issue journal info
   [Home ] [Archive]    
:: Volume 2, Issue 1 (3-2012) ::
2012, 2(1): 0-0 Back to browse issues page
A Vehicle Routing Problem with Inventory in a Hybrid Uncertain Environment
A. Malekly
Abstract:   (6352 Views)
Manufacturers, who re-supply a large number of customers, continually struggle with the question of how to formulate a replenishment strategy. The purpose of this paper is to determine the optimal set of routes for a group of vehicles in the transportation network under defined constraints – which is known as the Vehicle Routing Problem (VRP) – delivering new items, and resolving the inventory control decision problem simultaneously since the regular VRP does not. Both the vehicle routing decision for delivery and the inventory control decision affect each other and must be considered together. Hence, a mathematical model of vehicle routing problem with inventory is proposed whose demands are assumed to be hybrid variables (HVRPI) in which fuzziness and randomness are considered together. Then, the problem is transformed into its equivalent deterministic form and presented as a multi-objective mixed integer nonlinear programming. Since finding the optimal solution(s) for HVRPI is a NP-hard, a solution algorithm is presented composed of the constrained Nelder–Mead method and a Tabu search algorithm for the vehicle routing to solve the complex problem. The usefulness of the model is validated by experimental results. The findings indicate that the proposed model can provide a practical tool to significantly reduce the logistic cost. Keywords Vehicle Routing Problem, Hybrid Variable, Nelder–Mead Method, Tabu Search.
Full-Text [PDF 1002 kb]   (2056 Downloads)    
Type of Study: Research | Subject: General
Received: 2012/03/6 | Published: 2012/03/15
Send email to the article author

Add your comments about this article
Your username or Email:


XML     Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Malekly A. A Vehicle Routing Problem with Inventory in a Hybrid Uncertain Environment. International Journal of Applied Operational Research. 2012; 2 (1)
URL: http://ijorlu.liau.ac.ir/article-1-105-en.html

Volume 2, Issue 1 (3-2012) Back to browse issues page
ژورنال بین المللی پژوهش عملیاتی International Journal of Applied Operational Research - An Open Access Journal
Persian site map - English site map - Created in 0.06 seconds with 30 queries by YEKTAWEB 4227