The Noisy Quantitative Group Testing Problem

Tenghao Li, Neha Sangwan, Xiaxin Li, Arya Mazumdar

Published: 2026, Last Modified: 07 May 2026CoRR 2026EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: In this paper, we study the problem of quantitative group testing (QGT) and analyze the performance of three models: the noiseless model, the additive Gaussian noise model, and the noisy Z-channel model. For each model, we analyze two algorithmic approaches: a linear estimator based on correlation scores, and a least squares estimator (LSE). We derive upper bounds on the number of tests required for exact recovery with vanishing error probability, and complement these results with information-theoretic lower bounds. In the additive Gaussian noise setting, our lower and upper bounds match in order.
Loading