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A general setting for symmetric distributions and their relationship to general distributions

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Jupp_SymmetricDistributions_JoMA_AM.pdf (348.2Kb)
Date
06/2016
Author
Jupp, P.E.
Regoli, G.
Azzalini, A.
Keywords
Directional statistics
Skew-symmetric distribution
Symmetry-modulated distribution
Transformation
QA Mathematics
T-NDAS
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Abstract
A standard method of obtaining non-symmetrical distributions is that of modulating symmetrical distributions by multiplying the densities by a perturbation factor. This has been considered mainly for central symmetry of a Euclidean space in the origin. This paper enlarges the concept of modulation to the general setting of symmetry under the action of a compact topological group on the sample space. The main structural result relates the density of an arbitrary distribution to the density of the corresponding symmetrised distribution. Some general methods for constructing modulating functions are considered. The effect that transformations of the sample space have on symmetry of distributions is investigated. The results are illustrated by general examples, many of them in the setting of directional statistics.
Citation
Jupp , P E , Regoli , G & Azzalini , A 2016 , ' A general setting for symmetric distributions and their relationship to general distributions ' , Journal of Multivariate Analysis , vol. 148 , pp. 107-119 . https://doi.org/10.1016/j.jmva.2016.02.011
Publication
Journal of Multivariate Analysis
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.jmva.2016.02.011
ISSN
0047-259X
Type
Journal article
Rights
© 2016, Publisher / the Author(s). This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at www.sciencedirect.com / https://dx.doi.org/10.1016/j.jmva.2016.02.011
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10370

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