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Events by date

Friday, October 23, 2020

Friday, October 23, 2020 — 3:30 PM EDT

Title: Semidefinite Programming Relaxations of the Traveling Salesman Problem

Speaker: David P. Williamson Affiliation: Cornell University Zoom: Please email Emma Watson

Abstract:

Finding a polynomial-time solvable relaxation of the traveling salesman problem whose integrality gap better matches what is seen in practice has been an outstanding open problem in combinatorial optimization for some time.  We study several semidefinite programming relaxations of the traveling salesman problem proposed in the literature and show that all known relaxations have an unbounded integrality gap.

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