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Bayesian inference of a negative quantity from positive measurement results

D Calonico, F Levi, L Lorini and G Mana

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In this paper Bayesian analysis is applied to assign a probability density to the value of a quantity having a definite sign. This analysis is logically consistent with the results, positive or negative, of repeated measurements. Results are used to estimate the atom density shift in a caesium fountain clock. A comparison with the classical statistical analysis is also reported and the advantages of the Bayesian approach for the realization of the time unit are discussed.


PACS

06.30.Ft Time and frequency

06.20.Dk Measurement and error theory

Subjects

Instrumentation and measurement

Dates

Issue 3 (June 2009)

Received 15 December 2008, in final form 17 February 2009

Published 6 April 2009



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