August 28, 2016 to September 4, 2016
Europe/Athens timezone

Combination of measurements and the BLUE method

Sep 1, 2016, 2:30 PM
30m
Clio (Makedonia Palace)

Clio

Makedonia Palace

Speaker

Luca Lista (INFN Sezione di Napoli)

Description

The most accurate method to combine measurement is to build a combined likelihood function and use it to perform the desired inference. This is not always possible for various possible reasons, hence approximate methods are often convenient. Among those, the best linear unbiased estimator (BLUE) is the most popular, allowing to take into account individual uncertainties and their correlations. The method is unbiased by construction if the true uncertainties and their correlations are known, but it may exhibit a bias if uncertainty estimates are used in place of the true ones, in particular if those estimated uncertainties depend on measured values. In those cases, an iterative application of the BLUE method may reduce the bias of the combined measurement.

Primary author

Luca Lista (INFN Sezione di Napoli)

Presentation materials