arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.01376cs.ITcs.DMmath.IT
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每项常数次测试的含噪分组测试的改进界

Improved bounds for noisy group testing with constant tests per item

Oliver Gebhard, Oliver Johnson, Philipp Loick, Maurice Rolvien

AI总结:

本文研究含噪分组测试问题,通过为每个个体分配固定数量测试的设计,为两种推断算法推导出显式算法界,提供了目前已知最强的性能保证。

摘要:

分组测试问题关注在庞大群体中识别少量感染者。我们可用的测试程序允许将多个个体放在一起测试。在理想化设定下,当且仅当至少包含一名感染者时测试为阳性,否则为阴性。近年来,人们对理解这种无噪设定下的信息论和算法性质取得了重大进展。在本文中,我们考虑了分组测试的一种含噪变体,其中测试结果以特定概率被翻转,包括敏感性和特异性可取任意值的现实场景。使用每个个体被分配到固定数量测试的测试设计,我们为两种常被考虑的推断算法推导出显式的算法界,从而自然地扩展了Scarlett & Cevher (2016) 和 Scarlett & Johnson (2020) 的结果。我们为这些含噪分组测试模型中的高效算法提供了改进的性能保证——实际上,对于大范围的参数选择,本文提供的界是目前已证明的最强界。

英文摘要:

The group testing problem is concerned with identifying a small set of infected individuals in a large population. At our disposal is a testing procedure that allows us to test several individuals together. In an idealized setting, a test is positive if and only if at least one infected individual is included and negative otherwise. Significant progress was made in recent years towards understanding the information-theoretic and algorithmic properties in this noiseless setting. In this paper, we consider a noisy variant of group testing where test results are flipped with certain probability, including the realistic scenario where sensitivity and specificity can take arbitrary values. Using a test design where each individual is assigned to a fixed number of tests, we derive explicit algorithmic bounds for two commonly considered inference algorithms and thereby naturally extend the results of Scarlett \& Cevher (2016) and Scarlett \& Johnson (2020). We provide improved performance guarantees for the efficient algorithms in these noisy group testing models -- indeed, for a large set of parameter choices the bounds provided in the paper are the strongest currently proved.

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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