Classes Testable with $O(1/ε)$ Queries for Small $ε$ Independent of the Number of Variables

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Auteurs principaux: Bshouty, Nader H., Haddad, George
Format: Preprint
Publié: 2026
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author Bshouty, Nader H.
Haddad, George
author_facet Bshouty, Nader H.
Haddad, George
contents In this paper, we study classes of Boolean functions that are testable with $O(ψ+1/ε)$ queries, where $ψ$ depends on the parameters of the class (e.g., the number of terms, the number of relevant variables, etc.) but not on the total number of variables $n$. In particular, when $ε\le 1/ψ$, the query complexity is $O(1/ε)$, matching the known tight bound $Ω(1/ε)$. This result was previously known for classes of terms of size at most $k$ and exclusive OR functions of at most $k$ variables. In this paper, we extend this list to include the classes: $k$-junta, functions with Fourier degree at most $d$, $s$-sparse polynomials of degree at most $d$, and $s$-sparse polynomials. Additionally, we show that for any class $C$ of Boolean functions that depend on at most $k$ variables, if $C$ is properly exactly learnable, then it is testable with $O(1/ε)$ queries for $ε<1/ψ$, where $ψ$ depends on $k$ and independent of the total number of variables $n$.
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id arxiv_https___arxiv_org_abs_2604_05615
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Classes Testable with $O(1/ε)$ Queries for Small $ε$ Independent of the Number of Variables
Bshouty, Nader H.
Haddad, George
Data Structures and Algorithms
In this paper, we study classes of Boolean functions that are testable with $O(ψ+1/ε)$ queries, where $ψ$ depends on the parameters of the class (e.g., the number of terms, the number of relevant variables, etc.) but not on the total number of variables $n$. In particular, when $ε\le 1/ψ$, the query complexity is $O(1/ε)$, matching the known tight bound $Ω(1/ε)$. This result was previously known for classes of terms of size at most $k$ and exclusive OR functions of at most $k$ variables. In this paper, we extend this list to include the classes: $k$-junta, functions with Fourier degree at most $d$, $s$-sparse polynomials of degree at most $d$, and $s$-sparse polynomials. Additionally, we show that for any class $C$ of Boolean functions that depend on at most $k$ variables, if $C$ is properly exactly learnable, then it is testable with $O(1/ε)$ queries for $ε<1/ψ$, where $ψ$ depends on $k$ and independent of the total number of variables $n$.
title Classes Testable with $O(1/ε)$ Queries for Small $ε$ Independent of the Number of Variables
topic Data Structures and Algorithms
url https://arxiv.org/abs/2604.05615