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- W2962706095 abstract "The group testing problem is to identify a population of K defective items from a set of n items by pooling groups of items. The result of a test for a group of items is positive if any of the items in the group is defective and negative otherwise. The goal is to judiciously group subsets of items such that defective items can be reliably recovered using the minimum number of tests, while also having a low-complexity decoder. We describe SAFFRON (sparse-graph codes framework for group testing), a non-adaptive group testing scheme that recovers at least a (1 - ε)-fraction (for any arbitrarily small ε > 0) of K defective items with high probability with m = 6C(ε)K log <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> n tests, where C(ε) is a precisely characterized constant that depends only on o. For instance, it can provably recover at least (1 - 10 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>-6</sup> )K defective items with m ≃ 68K log <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> n tests. The computational complexity of the decoding algorithm is O(K log n), which is order-optimal. Further, we describe a systematic methodology to robustify SAFFRON such that it can reliably recover the set of K defective items even in the presence of erroneous or noisy test results. We also propose Singleton-Only-SAFFRON, a variant of SAFFRON, that recovers all the K defective items with m = 2e(1+α)K log K log <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> n tests with probability 1 - O(1/K <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>α</sup> ), where α > 0 is a constant. Our key intellectual contribution involves the pioneering use of powerful density-evolution methods of modern coding theory (e.g. sparse-graph codes) for efficient group testing design and performance analysis." @default.
- W2962706095 created "2019-07-30" @default.
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- W2962706095 date "2016-07-01" @default.
- W2962706095 modified "2023-09-24" @default.
- W2962706095 title "SAFFRON: A fast, efficient, and robust framework for group testing based on sparse-graph codes" @default.
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- W2962706095 doi "https://doi.org/10.1109/isit.2016.7541824" @default.
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