Boolean Unateness Testing with $\widetilde{O}(n^{3/4})$ Adaptive Queries

Xi Chen; Erik Waingarten; Jinyu Xie

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arXiv · 1708.05786

Boolean Unateness Testing with $\widetilde{O}(n^{3/4})$ Adaptive Queries

Xi Chen·Erik Waingarten·Jinyu Xie

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Abstract

We give an adaptive algorithm which tests whether an unknown Boolean function $f\colon \{0, 1\}^n \to\{0, 1\}$ is unate, i.e. every variable of $f$ is either non-decreasing or non-increasing, or $\epsilon$-far from unate with one-sided error using $\widetilde{O}(n^{3/4}/\epsilon^2)$ queries. This improves on the best adaptive $O(n/\epsilon)$-query algorithm from Baleshzar, Chakrabarty, Pallavoor, Raskhodnikova and Seshadhri when $1/\epsilon \ll n^{1/4}$. Combined with the $\widetilde{\Omega}(n)$-query lower bound for non-adaptive algorithms with one-sided error of [CWX17, BCPRS17], we conclude that adaptivity helps for the testing of unateness with one-sided error. A crucial component of our algorithm is a new subroutine for finding bi-chromatic edges in the Boolean hypercube called adaptive edge search.

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BibTeX RIS

Xi Chen, Erik Waingarten, Jinyu Xie. 2017-08-19. Boolean Unateness Testing with $\widetilde{O}(n^{3/4})$ Adaptive Queries. https://arxiv.org/abs/1708.05786

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