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We investigate methods for partitioning datasets into subgroups that maximize diversity within each subgroup while minimizing dissimilarity across subgroups. We introduce a novel partitioning method called the $\textit{Wasserstein…

机器学习 · 统计学 2024-10-04 Shizhou Xu , Thomas Strohmer

Consider $n$ items, each of which is characterised by one of $d+1$ possible features in $\{0, \ldots, d\}$. We study the inference task of learning these types by queries on subsets, or pools, of the items that only reveal a form of…

信息论 · 计算机科学 2022-02-10 Max Hahn-Klimroth , Noela Müller

We consider a novel group testing procedure, termed semi-quantitative group testing, motivated by a class of problems arising in genome sequence processing. Semi-quantitative group testing (SQGT) is a non-binary pooling scheme that may be…

信息论 · 计算机科学 2012-05-22 Amin Emad , Olgica Milenkovic

Given $d$ defective items in a population of $n$ items with $d \ll n$, in threshold group testing without gap, the outcome of a test on a subset of items is positive if the subset has at least $u$ defective items and negative otherwise,…

信息论 · 计算机科学 2024-05-10 Thach V. Bui , Yeow Meng Chee , Van Khu Vu

The motivation for this paper comes from the ongoing SARS-CoV-2 Pandemic. Its goal is to present a previously neglected approach to non-adaptive group testing and describes it in terms of residuated pairs on partially ordered sets. Our…

其他统计学 · 统计学 2022-02-15 Marcus Greferath , Cornelia Roessing

We consider the problem of non-adaptive noiseless group testing of $N$ items of which $K$ are defective. We describe four detection algorithms: the COMP algorithm of Chan et al.; two new algorithms, DD and SCOMP, which require stronger…

信息论 · 计算机科学 2014-05-20 Matthew Aldridge , Leonardo Baldassini , Oliver Johnson

We explore the problem of deriving a posteriori probabilities of being defective for the members of a population in the non-adaptive group testing framework. Both noiseless and noisy testing models are addressed. The technique, which relies…

信息论 · 计算机科学 2021-02-11 Gianluigi Liva , Enrico Paolini , Marco Chiani

We propose a novel infection spread model based on a random connection graph which represents connections between $n$ individuals. Infection spreads via connections between individuals and this results in a probabilistic cluster formation…

信息论 · 计算机科学 2022-03-30 Batuhan Arasli , Sennur Ulukus

In this letter we summarize some recent theoretical work on the design of collectives, i.e., of systems containing many agents, each of which can be viewed as trying to maximize an associated private utility, where there is also a world…

无序系统与神经网络 · 物理学 2007-05-23 Kagan Tumer , David Wolpert

This paper considers the noisy group testing problem where among a large population of items some are defective. The goal is to identify all defective items by testing groups of items, with the minimum possible number of tests. The focus of…

信息论 · 计算机科学 2021-10-20 Esmaeil Karimi , Anoosheh Heidarzadeh , Krishna R. Narayanan , Alex Sprintson

We consider the problem of non-adaptive group testing of $N$ items out of which $K$ or less items are known to be defective. We propose a testing scheme based on left-and-right-regular sparse-graph codes and a simple iterative decoder. We…

信息论 · 计算机科学 2017-01-27 Avinash Vem , Nagaraj T. Janakiraman , Krishna R. Narayanan

The usual problem for group testing is this: For a given number of individuals and a given prevalence, how many tests T* are required to find every infected individual? In real life, however, the problem is usually different: For a given…

应用统计 · 统计学 2021-07-21 Matthew Aldridge

This thesis aims to establish notions of symmetry for quantum states and channels as well as describe algorithms to test for these properties on quantum computers. Ideally, the work will serve as a self-contained overview of the subject. We…

量子物理 · 物理学 2023-05-25 Margarite L. LaBorde

Semiquantitative group testing (SQGT) is a pooling method in which the test outcomes represent bounded intervals for the number of defectives. Alternatively, it may be viewed as an adder channel with quantized outputs. SQGT represents a…

信息论 · 计算机科学 2021-02-10 Mahdi Cheraghchi , Ryan Gabrys , Olgica Milenkovic

We propose a novel group testing method, termed semi-quantitative group testing, motivated by a class of problems arising in genome screening experiments. Semi-quantitative group testing (SQGT) is a (possibly) non-binary pooling scheme that…

信息论 · 计算机科学 2015-05-28 Amin Emad , Olgica Milenkovic

Group testing can help maintain a widespread testing program using fewer resources amid a pandemic. In a group testing setup, we are given n samples, one per individual. Each individual is either infected or uninfected. These samples are…

信号处理 · 电气工程与系统科学 2023-07-19 Shu-Jie Cao , Ritesh Goenka , Chau-Wai Wong , Ajit Rajwade , Dror Baron

Bayesian optimization is an effective method for optimizing expensive-to-evaluate black-box functions. High-dimensional problems are particularly challenging as the surrogate model of the objective suffers from the curse of dimensionality,…

机器学习 · 计算机科学 2023-10-06 Erik Orm Hellsten , Carl Hvarfner , Leonard Papenmeier , Luigi Nardi

Pathogenic infections pose a significant threat to global health, affecting millions of people every year and presenting substantial challenges to healthcare systems worldwide. Efficient and timely testing plays a critical role in disease…

定量方法 · 定量生物学 2023-08-03 Ananthan Nambiar , Chao Pan , Vishal Rana , Mahdi Cheraghchi , João Ribeiro , Sergei Maslov , Olgica Milenkovic

When $k$ factors each taking one of $v$ levels may affect the correctness or performance of a complex system, a test is selected by setting each factor to one of its levels and determining whether the system functions as expected (passes…

组合数学 · 数学 2021-01-06 Charles J. Colbourn , Bingli Fan , Daniel Horsley

Up to date, only lower and upper bounds for the optimal configuration of a Square Array (A2) Group Testing (GT) algorithm are known. We establish exact analytical formulae and provide a couple of applications of our result. First, we…

统计理论 · 数学 2023-04-18 Ugnė Čižikovienė , Viktor Skorniakov