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arXiv 1402.2175cs.CC
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利用分解定理刻画局部可测仿射不变性质

A Characterization of Locally Testable Affine-Invariant Properties via Decomposition Theorems

Yuichi Yoshida

摘要:

设$\mathcal{P}$是函数$\mathbb{F}_p^n \to \{0,1\}$的一个性质,其中$p$是固定素数。如果给定对输入函数$f$的查询访问,当$f$满足$\mathcal{P}$时,该算法以高概率接受,当$f$“远”不满足$\mathcal{P}$时,该算法拒绝,则该算法被称为$\mathcal{P}$的测试器。在本文中,我们给出了一个仿射不变的性质,是(双边错误)测试与一个常数数量的查询的一个特征。的特征是在分解定理,其中大致声称,任何功能可以被分解成一个结构化的部分,这是一个常数的多项式的函数,和一个伪随机部分,其Gowers规范是小的。我们首先给出一个算法,该算法测试输入函数的结构化部分是否具有特定的形式。然后,我们证明了一个仿射不变的属性是可测试的,当且仅当它可以减少到一个恒定数量的查询的问题,测试是否输入函数的结构化部分接近一个恒定数量的候选人。

英文摘要:

Let $\mathcal{P}$ be a property of function $\mathbb{F}_p^n \to \{0,1\}$ for a fixed prime $p$. An algorithm is called a tester for $\mathcal{P}$ if, given a query access to the input function $f$, with high probability, it accepts when $f$ satisfies $\mathcal{P}$ and rejects when $f$ is "far" from satisfying $\mathcal{P}$. In this paper, we give a characterization of affine-invariant properties that are (two-sided error) testable with a constant number of queries. The characterization is stated in terms of decomposition theorems, which roughly claim that any function can be decomposed into a structured part that is a function of a constant number of polynomials, and a pseudo-random part whose Gowers norm is small. We first give an algorithm that tests whether the structured part of the input function has a specific form. Then we show that an affine-invariant property is testable with a constant number of queries if and only if it can be reduced to the problem of testing whether the structured part of the input function is close to one of a constant number of candidates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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