MIP Models for Production/Distribution and Production/Sequencing

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Event Details
  • Date/Time:
    • Tuesday April 5, 2011 - Wednesday April 6, 2011
      11:00 am - 11:59 am
  • Location: ISyE Executive classroom
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Summary Sentence: MIP Models for Production/Distribution and Production/Sequencing

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TITLE: MIP Models for Production/Distribution and Production/Sequencing

SPEAKER:  Dr. Laurence Wolsey

ABSTRACT:

After a brief introduction on single item lot-sizing, we present tight or tighter formulations for a couple of single and multi-item constant capacity lot-sizing variants.

We then examinehow reformulation resultsforbasic(typically) single-itemprob­lems can be used or extended to tackle realistic multi-item, multi-site problems. As a first application we consider a two-level supply chain, namely a multi-item n-period model with production sites and sales areas with production at the sites and transportation to the areas. We demonstrate the effectiveness of a multi-commodity reformulation combined with the use of inequalities for family set-ups when there are capacities at the transportation level..

The second application is a multi-item parallel machine model with start-up and/orsequencedependent changeovercosts. Hereweshowhowtoextend exist­ing valid inequalities and formulations to deal with identical parallel machines. Some limited computational results are presented.

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School of Industrial and Systems Engineering (ISYE)

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Status
  • Created By: Anita Race
  • Workflow Status: Published
  • Created On: Mar 31, 2011 - 4:04am
  • Last Updated: Oct 7, 2016 - 9:54pm