Browsing by Author "Huang, L-C"

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Multiple lot-sizing decisions in a two-stage production with an interrupted geometric yield and non-rigid demand
(2011-06-01)
Wu, M-C
;
Huang, L-C
;
Hsu, H-M
;
Su, T-S
;
工業工程與管理學系
In a production system with random yield, it may be more cost effective to release lots multiple times towards fulfilling a customer order. Such a decision, called the multiple lot-sizing problem, has been investigated in various contexts. This paper proposes an efficient algorithm for solving a new multiple lot-sizing problem defined in the context of a two-stage production system with non-rigid demand when its process yields are governed by interrupted geometric distributions. We formulate this problem as a dynamic program (DP) and develop lemmas to solve it. However, solving such a DP may be computationally extensive, particularly for large-scale cases with a high yield. Therefore, this study proposes an efficient algorithm for resolving computational issues. This algorithm is designed to reduce the DP network into a much simpler algorithm by combining a group of DP branches into a single one. Extensive experiments were carried out. Results indicate that the proposed reduction algorithm is quite helpful for practitioners dealing with large-scale cases characterized by high-yield. Journal of the Operational Research Society (2011) 62, 1075-1084. doi: 10.1057/jors.2010.39 Published online 19 May 2010