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arXiv 1502.04169cs.ITmath.IT
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从大总体中寻找无缺陷产品子集的计算易处理算法

Computationally Tractable Algorithms for Finding a Subset of Non-defective Items from a Large Population

Abhay Sharma, Chandra R. Murthy

摘要:

在经典的非自适应组测试设置中,项目池被一起测试,并且恢复算法的主要目标是在给定不同组测试的结果的情况下识别“完全缺陷集”。相比之下,“无缺陷子集恢复”算法的主要目标是在给定测试结果的情况下识别无缺陷项目的“子集”。在本文中,我们提出了一套计算效率和分析易处理的非亏损子集恢复算法。通过分析算法的错误概率,我们得到了在任意小的错误概率下,恢复无缺陷子集所需的测试次数的界。我们的分析考虑了加性噪声(假阳性)和稀释噪声(假阴性)的影响。通过与信息论下界的比较,我们证明了测试次数的上界是有序紧的直到一个$\log^2K$因子,其中$K$是缺陷项的数目.我们还提供了模拟结果,比较不同算法的相对性能,并提供进一步的见解,其实际效用。所提出的算法显着优于测试项目一个接一个的直接的方法,首先确定有缺陷的集合,然后从互补集合中选择无缺陷的项目,在测量所需的数量,以确保给定的成功率。

英文摘要:

In the classical non-adaptive group testing setup, pools of items are tested together, and the main goal of a recovery algorithm is to identify the "complete defective set" given the outcomes of different group tests. In contrast, the main goal of a "non-defective subset recovery" algorithm is to identify a "subset" of non-defective items given the test outcomes. In this paper, we present a suite of computationally efficient and analytically tractable non-defective subset recovery algorithms. By analyzing the probability of error of the algorithms, we obtain bounds on the number of tests required for non-defective subset recovery with arbitrarily small probability of error. Our analysis accounts for the impact of both the additive noise (false positives) and dilution noise (false negatives). By comparing with the information theoretic lower bounds, we show that the upper bounds on the number of tests are order-wise tight up to a $\log^2K$ factor, where $K$ is the number of defective items. We also provide simulation results that compare the relative performance of the different algorithms and provide further insights into their practical utility. The proposed algorithms significantly outperform the straightforward approaches of testing items one-by-one, and of first identifying the defective set and then choosing the non-defective items from the complement set, in terms of the number of measurements required to ensure a given success rate.

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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