SC&L SEMINAR SERIES :: Minimizing Multi-zone Orders in the Correlated Storage Assignment Problem

Event Details
  • Date/Time:
    • Wednesday April 13, 2005
      4:30 pm - 12:00 am
  • Location: Executive Classroom (Room 228 Main Building)
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    N/A
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Contact
Barbara Christopher
Industrial and Systems Engineering
Contact Barbara Christopher
404.385.3102
Summaries

Summary Sentence: SC&L SEMINAR SERIES :: Minimizing Multi-zone Orders in the Correlated Storage Assignment Problem

Full Summary: SC&L SEMINAR SERIES :: Minimizing Multi-zone Orders in the Correlated Storage Assignment Problem

In the correlated storage assignment problem, products are assigned to storage/pick zones in a warehouse to minimize picking effort. Unlike previous work which has focused on minimizing travel distance, our objective is to minimize the number of zones that must be visited to fill the orders. This problem is NP-Complete so heuristic methods are developed to find solutions. We present a Lagrangian relaxation approach as well as several other construction heuristics. Improvement methods discussed include 2-exchanges and cyclic exchanges. We also consider problem variations such as different product sizes, stock splitting, and rewarehousing. Computational results are presented for problems containing up to 10664 products and 40 zones. In particular, our results show that cyclic exchanges are very powerful and can be used to obtain solutions 15% better than those from using popularity, a standard approach.

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School of Industrial and Systems Engineering (ISYE)

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Status
  • Created By: Barbara Christopher
  • Workflow Status: Published
  • Created On: Oct 8, 2010 - 7:38am
  • Last Updated: Oct 7, 2016 - 9:52pm