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Publication Citation: Comments on 'Bayesian evaluation of comparison data' by Ignacio Lira

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Author(s): Raghu N. Kacker; Blaza Toman;
Title: Comments on 'Bayesian evaluation of comparison data' by Ignacio Lira
Published: January 01, 2007
Abstract: A recent paper by Ignacio Lira in Metrologia 43 (2006) S231-S234 addresses a well-known problem in combining information from interlaboratory evaluations. Lira presents an expression, which he claims to be the kernel of a Bayesian posterior probability density function (pdf) concerning the value of the common measurand. Lira claims that his expression encodes the collective state of knowledge irrespective of whether or not the data are consistent. We note that the expression claimed by Lira as a pdf for the value of the measurand is baseless.
Citation: Metrologia
Volume: 44
Pages: pp. L57 - L61
Keywords: Bayesian statistics,interlaboratory evaluations,key comparisons
Research Areas: Math, Statistics
PDF version: PDF Document Click here to retrieve PDF version of paper (108KB)