Robust Storage Assignment in Unit-Load Warehouses

Assigning products to and retrieving them from proper storage locations are crucial in minimizing the operating cost of a unit-load warehouse. The problem becomes intractable when the warehouse faces variable supply and uncertain demand in a multi-period setting. We assume a factor-based demand mode...

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Main Authors: ANG, Marcus, LIM, Yun Fong, SIM, Melvyn
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語言:English
出版: Institutional Knowledge at Singapore Management University 2012
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https://ink.library.smu.edu.sg/context/lkcsb_research/article/4193/viewcontent/mnsc_E1120_E1543_2012.pdf
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spelling sg-smu-ink.lkcsb_research-41932023-12-06T01:17:57Z Robust Storage Assignment in Unit-Load Warehouses ANG, Marcus LIM, Yun Fong SIM, Melvyn Assigning products to and retrieving them from proper storage locations are crucial in minimizing the operating cost of a unit-load warehouse. The problem becomes intractable when the warehouse faces variable supply and uncertain demand in a multi-period setting. We assume a factor-based demand model in which demand for each product in each period is affinely dependent on some uncertain factors. The distributions of these factors are only partially characterized. We introduce a robust optimization model that minimizes the worst-case expected total travel in the warehouse with distributional ambiguity of demand. Under a linear decision rule, we obtain a storage and retrieval policy by solving a moderate-size linear optimization problem. Surprisingly, despite imprecise specification of demand distributions, our computational studies suggest that the linear policy achieves close to the expected value given perfect information, and significantly outperforms existing heuristics in the literature. 2012-11-01T07:00:00Z text application/pdf https://ink.library.smu.edu.sg/lkcsb_research/3194 info:doi/10.1287/mnsc.1120.1543 https://ink.library.smu.edu.sg/context/lkcsb_research/article/4193/viewcontent/mnsc_E1120_E1543_2012.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection Lee Kong Chian School Of Business eng Institutional Knowledge at Singapore Management University inventory production uncertainty programming linear large scale systems transportation materials handling Operations and Supply Chain Management
institution Singapore Management University
building SMU Libraries
continent Asia
country Singapore
Singapore
content_provider SMU Libraries
collection InK@SMU
language English
topic inventory
production
uncertainty
programming
linear
large scale systems
transportation
materials handling
Operations and Supply Chain Management
spellingShingle inventory
production
uncertainty
programming
linear
large scale systems
transportation
materials handling
Operations and Supply Chain Management
ANG, Marcus
LIM, Yun Fong
SIM, Melvyn
Robust Storage Assignment in Unit-Load Warehouses
description Assigning products to and retrieving them from proper storage locations are crucial in minimizing the operating cost of a unit-load warehouse. The problem becomes intractable when the warehouse faces variable supply and uncertain demand in a multi-period setting. We assume a factor-based demand model in which demand for each product in each period is affinely dependent on some uncertain factors. The distributions of these factors are only partially characterized. We introduce a robust optimization model that minimizes the worst-case expected total travel in the warehouse with distributional ambiguity of demand. Under a linear decision rule, we obtain a storage and retrieval policy by solving a moderate-size linear optimization problem. Surprisingly, despite imprecise specification of demand distributions, our computational studies suggest that the linear policy achieves close to the expected value given perfect information, and significantly outperforms existing heuristics in the literature.
format text
author ANG, Marcus
LIM, Yun Fong
SIM, Melvyn
author_facet ANG, Marcus
LIM, Yun Fong
SIM, Melvyn
author_sort ANG, Marcus
title Robust Storage Assignment in Unit-Load Warehouses
title_short Robust Storage Assignment in Unit-Load Warehouses
title_full Robust Storage Assignment in Unit-Load Warehouses
title_fullStr Robust Storage Assignment in Unit-Load Warehouses
title_full_unstemmed Robust Storage Assignment in Unit-Load Warehouses
title_sort robust storage assignment in unit-load warehouses
publisher Institutional Knowledge at Singapore Management University
publishDate 2012
url https://ink.library.smu.edu.sg/lkcsb_research/3194
https://ink.library.smu.edu.sg/context/lkcsb_research/article/4193/viewcontent/mnsc_E1120_E1543_2012.pdf
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