From chi^2 to Bayesian model comparison : the example of Levy-based fits to e+e- correlations
Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Proceedings of Science
Abstract
The usual χ2 method of fit quality assessment is a special case of the more general method of Bayesian model comparison which involves integrals of the likelihood and prior over all possible values of all parameters. We introduce new parametrisations based on systematic expansions around the stretched exponential or Fourier-transformed Lévy source distribution, and utilise the increased discriminating power of the Bayesian approach to evaluate the relative probability of
these models to be true representations of a recently measured Bose-Einstein correlation data in e +e− annihilations at LEP.
Description
CITATION: De Kock, M. B., Eggers, H. C. & Csorgo, T. 2012. From chi^2 to Bayesian model comparison : the example of Levy-based fits to e+e- correlations. In The Seventh Workshop on Particle Correlations and Femtoscopy, September 20th to 24th, 2011
The University of Tokyo, Japan.
The original publication is available at https://pos.sissa.it/154
The original publication is available at https://pos.sissa.it/154
Keywords
Bayesian statistical decision theory
Citation
De Kock, M. B., Eggers, H. C. & Csorgo, T. 2012. From chi^2 to Bayesian model comparison : the example of Levy-based fits to e+e- correlations. In The Seventh Workshop on Particle Correlations and Femtoscopy, September 20th to 24th, 2011
The University of Tokyo, Japan.