arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.10256cs.ITmath.IT
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广义群测试

Generalized Group Testing

Xiwei Cheng, Sidharth Jaggi, Qiaoqiao Zhou

摘要:

在经典的群体测试问题中,人们的目标是在一个大的群体(大小为$n$)中识别一个小的子集(大小为$d$)患病个体/缺陷项目。这个过程是基于最小数量的适当设计的小组测试的项目的子集,其中测试结果是积极的,如果给定的测试包含至少一个有缺陷的项目。出于物理上的考虑,我们考虑一个广义的设置,包括作为特殊情况下,在文献中的多个其他组测试样模型。在我们的设置,其中包括作为特殊情况下的各种无噪声和噪声组测试模型在文献中,测试结果是积极的概率$f(x)$,其中$x$是在池中测试的缺陷的数量,和$f(\cdot)$是一个任意的单调递增(随机)的测试功能。我们的主要贡献如下。1.我们提出了一个非自适应的计划,概率$1-\varepsilon$识别所有的缺陷项目。我们的方案最多需要${\cal O}( H(f) d\log\left(\frac{n}{\varepsilon}\right))$测试,其中$H(f)$是$f(\cdot)$的适当定义的“敏感性参数”,并且永远不会大于${\cal O}\left(d^{1+o(1)}\right)$,但对于许多$f(\cdot)$可能会小得多。2.我们认为,任何非自适应组测试计划至少需要$Ω\left((1-\varepsilon)h(f) d\log\left(\frac n d\right)\right)$测试,以确保可靠的恢复。这里,$h(f) \geq 1$是$f(\cdot)$的适当定义的“浓度参数”。3.我们证明了$\frac{H(f)}{h(f)}\inΘ(1)$的各种稀疏恢复组测试模型在文献中,和$\frac {H(f)} {h(f)} \in {\cal O}\left(d^{1+o(1)}\right)$的任何其他测试功能。

英文摘要:

In the problem of classical group testing one aims to identify a small subset (of size $d$) diseased individuals/defective items in a large population (of size $n$). This process is based on a minimal number of suitably-designed group tests on subsets of items, where the test outcome is positive iff the given test contains at least one defective item. Motivated by physical considerations, we consider a generalized setting that includes as special cases multiple other group-testing-like models in the literature. In our setting, which subsumes as special cases a variety of noiseless and noisy group-testing models in the literature, the test outcome is positive with probability $f(x)$, where $x$ is the number of defectives tested in a pool, and $f(\cdot)$ is an arbitrary monotonically increasing (stochastic) test function. Our main contributions are as follows. 1. We present a non-adaptive scheme that with probability $1-\varepsilon$ identifies all defective items. Our scheme requires at most ${\cal O}( H(f) d\log\left(\frac{n}{\varepsilon}\right))$ tests, where $H(f)$ is a suitably defined "sensitivity parameter" of $f(\cdot)$, and is never larger than ${\cal O}\left(d^{1+o(1)}\right)$, but may be substantially smaller for many $f(\cdot)$. 2. We argue that any non-adaptive group testing scheme needs at least $Ω\left((1-\varepsilon)h(f) d\log\left(\frac n d\right)\right)$ tests to ensure reliable recovery. Here $h(f) \geq 1$ is a suitably defined "concentration parameter" of $f(\cdot)$. 3. We prove that $\frac{H(f)}{h(f)}\inΘ(1)$ for a variety of sparse-recovery group-testing models in the literature, and $\frac {H(f)} {h(f)} \in {\cal O}\left(d^{1+o(1)}\right)$ for any other test function.

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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