Some easy optimization problems have the overlap-gap property

November 04, 2024 ยท The Ethereal ยท ๐Ÿ› Annual Conference Computational Learning Theory

๐Ÿ”ฎ THE ETHEREAL: The Ethereal
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Authors Shuangping Li, Tselil Schramm arXiv ID 2411.01836 Category cs.CC: Computational Complexity Cross-listed cs.DS, math.CO, math.PR Citations 12 Venue Annual Conference Computational Learning Theory Last Checked 2 months ago
Abstract
We show that the shortest $s$-$t$ path problem has the overlap-gap property in (i) sparse $\mathbf{G}(n,p)$ graphs and (ii) complete graphs with i.i.d. Exponential edge weights. Furthermore, we demonstrate that in sparse $\mathbf{G}(n,p)$ graphs, shortest path is solved by $O(\log n)$-degree polynomial estimators, and a uniform approximate shortest path can be sampled in polynomial time. This constitutes the first example in which the overlap-gap property is not predictive of algorithmic intractability for a (non-algebraic) average-case optimization problem.
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