Spring 2019

Optimization over the Hypercube via Sums of Nonnegative Circuit Polynomials

Wednesday, May 1, 2019 2:15 pm3:00 pm PDT

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Mareike Dressler (UC San Diego)

Various key problems from theoretical computer science can be expressed as polynomial optimization problems over the boolean hypercube H. One particularly successful way to prove complexity bounds for these types of problems are based on sums of squares (SOS) as nonnegativity certificates. We initiate optimization over H via a recent, alternative certificate called sums of nonnegative circuit polynomials (SONC). We show that key results for SOS based certificates remain valid: First, for polynomials, which are nonnegative over the n-variate boolean hypercube H with constraints of degree at most d there exists a SONC certificate of degree at most n+d. Second, if there exists a degree d SONC certificate for nonnegativity of a polynomial over H, then there also exists a short degree d SONC certificate, that includes at most n^O(d) nonnegative circuit polynomials.