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MIP Lifting Techniques for Mixed Integer Nonlinear Programs Jean-Philippe P. Richard* School of Industrial Engineering, Purdue University Mohit Tawarmalani Krannert School of Management, Purdue University *Supported by NSF DMI0348611
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MIP 2006, Thursday June 8th 2006 2 Structure of the Talk
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MIP 2006, Thursday June 8th 2006 3
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4 A Motivation in Integer Programming
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MIP 2006, Thursday June 8th 2006 5 A Motivation in Integer Programming
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MIP 2006, Thursday June 8th 2006 6 What is MIP Lifting?
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MIP 2006, Thursday June 8th 2006 7 Some Literature on MIP lifting
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MIP 2006, Thursday June 8th 2006 8 What is Hard about MINLP Lifting?
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MIP 2006, Thursday June 8th 2006 9 Overview & Goal of Our Work
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MIP 2006, Thursday June 8th 2006 10 Some Nice Features of MINLP Lifting
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MIP 2006, Thursday June 8th 2006 11
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MIP 2006, Thursday June 8th 2006 12 Goal of Part II
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MIP 2006, Thursday June 8th 2006 13
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MIP 2006, Thursday June 8th 2006 14 Mixed Integer Nonlinear Knapsack
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MIP 2006, Thursday June 8th 2006 15 Mixed Integer Nonlinear Knapsack
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MIP 2006, Thursday June 8th 2006 16 Generating Valid Inequalities for PS
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MIP 2006, Thursday June 8th 2006 17 A General Lifting Result for PS
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MIP 2006, Thursday June 8th 2006 18 Advantages and Limitations of the Lifting Scheme
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MIP 2006, Thursday June 8th 2006 19 A Superadditive Lifting Result for PS
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MIP 2006, Thursday June 8th 2006 20 A Superadditive Lifting Result for PS
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MIP 2006, Thursday June 8th 2006 21 A Superadditive Lifting Result for PS
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MIP 2006, Thursday June 8th 2006 22
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MIP 2006, Thursday June 8th 2006 23 Application: Bilinear Mixed Integer Knapsack Problem (BMIKP)
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MIP 2006, Thursday June 8th 2006 24 BMIKP: Comments
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MIP 2006, Thursday June 8th 2006 25 The Convex Hull of PT’ is a Polyhedron
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MIP 2006, Thursday June 8th 2006 26 Obtaining Facets of PT using Superadditive Lifting
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MIP 2006, Thursday June 8th 2006 27 Obtaining Facets of PT using Superadditive Lifting
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MIP 2006, Thursday June 8th 2006 28 Example
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MIP 2006, Thursday June 8th 2006 29 Obtaining Facets of PT using Superadditive Lifting
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MIP 2006, Thursday June 8th 2006 30 Another Family of Strong Inequalities for PT
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MIP 2006, Thursday June 8th 2006 31 Another Family of Strong Inequalities for PT
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MIP 2006, Thursday June 8th 2006 32 Example
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MIP 2006, Thursday June 8th 2006 33
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MIP 2006, Thursday June 8th 2006 34
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MIP 2006, Thursday June 8th 2006 35 An Equivalent Integer Programming Formulation for PT
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MIP 2006, Thursday June 8th 2006 36 An Equivalent Integer Programming Formulation for PT
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MIP 2006, Thursday June 8th 2006 37 Strong Rank-1 Inequalities
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MIP 2006, Thursday June 8th 2006 38 High Rank Certificate
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MIP 2006, Thursday June 8th 2006 39 Lifted Cover Cuts for BMIKP are not Strong Rank-1
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MIP 2006, Thursday June 8th 2006 40 Towards the Next Step…
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MIP 2006, Thursday June 8th 2006 41
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MIP 2006, Thursday June 8th 2006 42 Goal of Part III
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MIP 2006, Thursday June 8th 2006 43 A General Procedure
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MIP 2006, Thursday June 8th 2006 44 Deriving Nonlinear Cuts for Mixed Integer Programs: Applications
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MIP 2006, Thursday June 8th 2006 45 Obtaining the Convex Hull of a Simple Bilinear Knapsack Set
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MIP 2006, Thursday June 8th 2006 46 Obtaining the Convex hull of a Simple Bilinear Knapsack Set
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MIP 2006, Thursday June 8th 2006 47 Obtaining the Convex hull of a Simple Bilinear Knapsack Set
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MIP 2006, Thursday June 8th 2006 48 Obtaining the Convex hull of a Simple Bilinear Knapsack Set
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MIP 2006, Thursday June 8th 2006 49 Obtaining Convex Hulls of Disjunctive Sets: An Example
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MIP 2006, Thursday June 8th 2006 50 Obtaining Convex Hulls of Disjunctive Sets: An Example
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MIP 2006, Thursday June 8th 2006 51 Obtaining Convex Hulls of Disjunctive Sets: An Example
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MIP 2006, Thursday June 8th 2006 52 Obtaining the Convex Hull of Disjunctive Sets: A Result
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MIP 2006, Thursday June 8th 2006 53 Obtaining the Convex Hull of Disjunctive Sets: An Example
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MIP 2006, Thursday June 8th 2006 54 Obtaining the Convex Hull of Disjunctive Sets: An Example
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MIP 2006, Thursday June 8th 2006 55 Some Comments
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MIP 2006, Thursday June 8th 2006 56
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MIP 2006, Thursday June 8th 2006 57 Goal of Part IV
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MIP 2006, Thursday June 8th 2006 58 Generalizing the Theory…
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MIP 2006, Thursday June 8th 2006 59 Generalizing the Superadditive Lifting Theory…
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MIP 2006, Thursday June 8th 2006 60 Application: Sequence Independent lifting for single-constraint problems
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MIP 2006, Thursday June 8th 2006 61 Application: Sequence Independent lifting for single-constraint problems
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MIP 2006, Thursday June 8th 2006 62
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MIP 2006, Thursday June 8th 2006 63 Conclusion & Future Work
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