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Erschienen in: Designs, Codes and Cryptography 10/2021

09.09.2021

Egalitarian Steiner triple systems for data popularity

verfasst von: Charles J. Colbourn

Erschienen in: Designs, Codes and Cryptography | Ausgabe 10/2021

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Abstract

For an ordering of the blocks of a design, the point sum of an element is the sum of the indices of blocks containing that element. Block labelling for popularity asks for the point sums to be as equal as possible. For Steiner systems of order v and strength t in general, the average point sum is \(O(v^{2t-1})\); under various restrictions on block partitions of the Steiner system, the difference between the largest and smallest point sums is shown to be \(O(v^{(t+1)/2}\log v)\). Indeed for Steiner triple systems, direct and recursive constructions are given to establish that systems exist with all point sums equal for more than two thirds of the admissible orders.
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Metadaten
Titel
Egalitarian Steiner triple systems for data popularity
verfasst von
Charles J. Colbourn
Publikationsdatum
09.09.2021
Verlag
Springer US
Erschienen in
Designs, Codes and Cryptography / Ausgabe 10/2021
Print ISSN: 0925-1022
Elektronische ISSN: 1573-7586
DOI
https://doi.org/10.1007/s10623-021-00925-0

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