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Title: A note on Tukey's polyefficiency
Authors: Yatracos, Yannis G. 
Keywords: Dimensional analysis
Issue Date: 1991
Publisher: Oxford University Press
Source: Biometrika, 1991, Volume 78, Issue 3, Pages 702-703
Abstract: The efficiency of an estimate Sn is usually computed at some underlying distribution. Because it is rare that a real situation can be represented by a single assumed model, Tukey proposed to compute instead the polyefficiency of Sn, that is the infimum of the efficiencies of Sn at a reasonable collection of distributions called corners. It is shown that high polyefficiency over a finite number of corners, seen as possible distributions of the n dimensional sample, implies at least as high an efficiency at any convex combination of these corners.
ISSN: 0006-3444 (print)
1464-3510 (online)
DOI: http:/
Rights: © 1991 Biometrika Trust.
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