Abstract
ABSTRACT This study is an extension of the Joint Replenishment Problem (JRP) that takes into accounts warehouse-space restrictions. The focus of this study is to determine the lot size of each product under power-of-two policy to minimize the total cost per unit time and to generate a feasible replenishment schedule of multiple products without exceeding the available warehouse-space. In order to solve this problem, we propose a hybrid genetic algorithm (HGA). We utilize the ability of multi-dimensional search of GA to obtain candidates in the solution space, and test the feasibility of any candidate using the proposed heuristics. By our numerical experiments, we demonstrate that the proposed HGA could effectively solve the JRP with warehouse-space restrictions. Therefore, it could serve as an effective decision-support tool for the logistic managers.
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