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Covering Array Bounds Using Analytical Techniques
Combinatorics · Submitted 12 May 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We will show how a combination of the Lov\'asz local lemma; combinatorial analysis; Stirling's formula; and Calculus enables one to find better asymptotic bounds for the minimum size of $t$-covering arrays, notably for $t = 3, 4$.
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The abstract, sentence by sentence
A $t$-covering array with entries from the alphabet ${\cal Q}=\{0,1,\ldots,q-1\}$ is a $k\times n$ stack, so that for any choice of $t$ (typically non-consecutive) columns, each of the $q^{t}$ possible $t$-letter words over ${\cal Q}$ appear at least once among the rows of the selected columns. We will show how a combination of the Lov\'asz local lemma; combinatorial analysis; Stirling's formula; and Calculus enables one to find better asymptotic bounds for the minimum size of $t$-covering arrays, notably for $t = 3, 4$. Here size is measured in the number of rows, as expressed in terms of the number of columns.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | A $t$-covering array with entries from the alphabet ${\cal Q}=\{0,1,\ldots,q-1\}$ is a $k\times n$ stack, so that for any choice of $t$ (typically non-consecutive) columns, each of the $q^{t}$ possible $t$-letter words over ${\cal Q}$ appear at least once among the rows of the selected columns. | background 1.00 | 0.05 | 0.03 | asserted 1.00 |
| s1 | We will show how a combination of the Lov\'asz local lemma; combinatorial analysis; Stirling's formula; and Calculus enables one to find better asymptotic bounds for the minimum size of $t$-covering arrays, notably for $t = 3, 4$. | contribution 0.78 | 0.89 | 0.76 | asserted 0.98 |
| s2 | Here size is measured in the number of rows, as expressed in terms of the number of columns. | background 0.81 | 0.28 | 0.04 | asserted 1.00 |
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The paper
Original abstract
A $t$-covering array with entries from the alphabet ${\cal Q}=\{0,1,\ldots,q-1\}$ is a $k\times n$ stack, so that for any choice of $t$ (typically non-consecutive) columns, each of the $q^{t}$ possible $t$-letter words over ${\cal Q}$ appear at least once among the rows of the selected columns. We will show how a combination of the Lov\'asz local lemma; combinatorial analysis; Stirling's formula; and Calculus enables one to find better asymptotic bounds for the minimum size of $t$-covering arrays, notably for $t = 3, 4$. Here size is measured in the number of rows, as expressed in terms of the number of columns.
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