Orthogonal parametrisations of Extreme-Value distributions
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915803956248576 |
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| author | Huet, Nathan Prosdocimi, Ilaria |
| author_facet | Huet, Nathan Prosdocimi, Ilaria |
| contents | Extreme value distributions are routinely employed to assess risks connected to extreme events in a large number of applications. They typically are two- or three- parameter distributions: the inference can be unstable, which is particularly problematic given the fact that often times these distributions are fitted to small samples. Furthermore, the distribution's parameters are generally not directly interpretable and not the key aim of the estimation. We present several orthogonal reparametrisations of the main extreme-value distributions, key in the modelling of rare events. In particular, we apply the theory developed in Cox and Reid (1987) to the Generalised Extreme-Value, Generalised Pareto, and Gumbel distributions. We illustrate the principal advantage of these reparametrisations in a simulation study. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_16283 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Orthogonal parametrisations of Extreme-Value distributions Huet, Nathan Prosdocimi, Ilaria Statistics Theory Other Statistics 60G70, 62G32, 62F99 Extreme value distributions are routinely employed to assess risks connected to extreme events in a large number of applications. They typically are two- or three- parameter distributions: the inference can be unstable, which is particularly problematic given the fact that often times these distributions are fitted to small samples. Furthermore, the distribution's parameters are generally not directly interpretable and not the key aim of the estimation. We present several orthogonal reparametrisations of the main extreme-value distributions, key in the modelling of rare events. In particular, we apply the theory developed in Cox and Reid (1987) to the Generalised Extreme-Value, Generalised Pareto, and Gumbel distributions. We illustrate the principal advantage of these reparametrisations in a simulation study. |
| title | Orthogonal parametrisations of Extreme-Value distributions |
| topic | Statistics Theory Other Statistics 60G70, 62G32, 62F99 |
| url | https://arxiv.org/abs/2602.16283 |