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Nonparametric estimates of age misclassification from paired readings

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With a large enough sample, age misclassification probabilities can be estimated nonparametrically by fitting the observed distribution of differences between paired readings. Application of this procedure to Pacific halibut data reveals that the unsigned deviations of single readings from the mode follow a geometric distribution, leading to a simple specification of misclassification probabilities. The potential for bias in this and other published procedures is discussed.

Dans un échantillon assez grand, on peut estimer par des méthodes non paramétriques les probabilités de classification erronée des âges en ajustant les distributions observées des différences entre des lectures appariées. L'application de cette procédure à des données sur le flétan du Pacifique indique que les déviations (sans signe) de lectures uniques tirées du mode suivent une distribution géométrique, ce qui mène à une simple spécification des probabilités de classification erronée. Les probabilités d'erreur dans cette procédure et dans d'autres présentées dans la littérature font l'objet d'une discussion.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: October 1, 2004

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  • Published continuously since 1901 (under various titles), this monthly journal is the primary publishing vehicle for the multidisciplinary field of aquatic sciences. It publishes perspectives (syntheses, critiques, and re-evaluations), discussions (comments and replies), articles, and rapid communications, relating to current research on cells, organisms, populations, ecosystems, or processes that affect aquatic systems. The journal seeks to amplify, modify, question, or redirect accumulated knowledge in the field of fisheries and aquatic science. Occasional supplements are dedicated to single topics or to proceedings of international symposia.
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