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DTSTART:20200308T070000
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DTSTART;TZID=America/Toronto:20210212T153000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/tutte-colloq
 uium-robert-hildebrand
SUMMARY:Tutte Colloquium - Robert Hildebrand
CLASS:PUBLIC
DESCRIPTION:TITLE: Mixed Integer Programming - Strength of adding integer\
 nvariables\n\nSpeaker:\n Robert Hildebrand\n\nAffliation:\n Virginia Tech\
 n\nZoom:\n Please email Emma Watson\n\nABSTRACT:\n\nMixed Integer Program
 ming is the problem of optimizing a multi-variate\nfunction over some doma
 in constraints where some variables are\nrequired to take integer values.
  From a complexity-theoretic\nperspective\,  problems with fewer 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 context of co
 nverting\nlifting integer and continuous variables to more variables.  We
  will\nconclude with recent work on mixed-integer quadratic programming a
 nd\nmention some computational results.
DTSTAMP:20260406T204509Z
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