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DTSTART:20200308T070000
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DTSTART;TZID=America/Toronto:20210212T153000
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URL:/combinatorics-and-optimization/events/tutte-colloq
 uium-robert-hildebrand
SUMMARY:Tutte Colloquium - Robert Hildebrand
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Mixed Integer Programming - Strength of add
 ing integer\nvariables\n\nSpeaker:\n Robert Hildebrand\n\nAffliation:\n Vi
 rginia Tech\n\nZoom:\n Please email Emma Watson\n\nABSTRACT:\n\nMixed Int
 eger Programming is the problem of optimizing a multi-variate\nfunction ov
 er some domain constraints where some variables are\nrequired to take int
 eger values. From a complexity-theoretic\nperspective\,  problems with f
 ewer integer variables are easier to\nsolve. However\, this is not always
  the case in practice.  We will\ndiscuss how performance can be improved 
 when adding integer variables\nin the context of cutting planes and branch
  and bound. We will compare\nseveral frameworks for doing so in both the c
 ontext of converting\nlifting integer and continuous variables to more var
 iables.  We will\nconclude with recent work on mixed-integer quadratic pr
 ogramming and\nmention some computational results.\n 
DTSTAMP:20250525T074658Z
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