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Determining Plurality

Identifieur interne : 006A29 ( Hal/Corpus ); précédent : 006A28; suivant : 006A30

Determining Plurality

Auteurs : Laurent Alonso ; Edward M. Reingold

Source :

RBID : Hal:inria-00169184

Abstract

Given a set of $n$ elements, each of which is colored one of $c$ colors, we must determine an element of the plurality (most frequently occurring) color by pairwise equal/unequal color comparisons of elements. We prove that $(c-1)(n-c)/2$ color comparisons are necessary in the worst case to determine the plurality color and give an algorithm requiring $(0.775 c + 5.9)n + O(c^2)$ color comparisons for $c \geq 9$.

Url:
DOI: 10.1145/1367064.1367066

Links to Exploration step

Hal:inria-00169184

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