Results 31 to 40 of about 239,604 (162)

On the Estimation of the Second Order Parameter for Heavy-Tailed Distributions

Revstat Statistical Journal, 2013
The extreme-value index γ is an important parameter in extreme-value theory since it controls the first order behavior of the distribution tail. In the literature, numerous estimators of this parameter have been proposed especially in the case of heavy ...
El hadji Deme , Laurent Gardes , Stéphane Girard   +2 more
doaj   +1 more source

Analysis of extreme rainfall in Oti River Basin (West Africa)

Journal of Water and Climate Change, 2021
Understanding how extreme rainfall is changing locally is a useful step in the implementation of efficient adaptation strategies to negative impacts of climate change. This study aims to analyze extreme rainfall over the middle Oti River Basin.
Komi S. Klassou, Kossi Komi
doaj   +1 more source

Latent model extreme value index estimation

Journal of Multivariate Analysis
47 pages, 8 ...
Joni Virta, Niko Lietzén, Lauri Viitasaari, Pauliina Ilmonen   +3 more
openaire   +4 more sources

Characterizing Extreme Geomagnetic Storms Using Extreme Value Analysis: A Discussion on the Representativeness of Short Data Sets

Space Weather, 2020
One of the main goals when studying Space Weather is to characterize extreme events occurrences and related characteristics. To do so, dedicated statistical methods from the so‐called extreme value analysis (EVA) field have been developed.
G. Bernoux, V. Maget
doaj   +1 more source

Analysis of extreme rainfall and drought events using statistical and fractal methods: A case study of Mauritius

South African Journal of Science, 2021
Due to climate change, extreme rainfall and drought events are becoming more and more frequent in several regions of the globe. We investigated the suitability of employing statistical and fractal (or scaling) methods to characterise extreme ...
Reena H. Seebocus, Michel R. Lollchund, Miloud Bessafi   +2 more
doaj   +1 more source

Extreme Body Condition Index Values in Small Mammals

Life
The body condition index (BCI) values in small mammals are important in understanding their survival and reproduction. The upper values could be related to the Chitty effect (presence of very heavy individuals), while the minimum ones are little known.
Linas Balčiauskas, Laima Balčiauskienė   +1 more
openaire   +4 more sources

Maximum lq-likelihood estimator of the heavy-tailed distribution parameter

Croatian Review of Economic, Business and Social Statistics
Studying the extreme value theory (EVT) involves multiple main objectives, among them the estimation of the tail index parameter. Some estimation methods are used to estimate the tail index parameter like maximum likelihood estimation (MLE). Additionally,
Mohammed Ridha Kouider, Nesrine Idiou, Samia Toumi, Fatah Benatia   +3 more
doaj   +1 more source

Analysis of maximum air temperature distribution

Lietuvos Matematikos Rinkinys, 2015
The article authors detected distribution estimates of maximum air temperature. Also estimated ultimate temperature record and found quality of temperature record.
Arvydas Jokimaitis, Darius Petronaitis
doaj   +1 more source

On the Maximum Likelihood Estimation of Extreme Value Index Based on k-Record Values

Journal of Probability and Statistics, 2020
In this paper, we study the existence and consistency of the maximum likelihood estimator of the extreme value index based on k-record values. Following the method used by Drees et al.
Abderrahim Louzaoui, Mohamed El Arrouchi
doaj   +1 more source

The first high spatial resolution multi-scale daily SPI and SPEI raster dataset for drought monitoring and evaluating over China from 1979 to 2018

Big Earth Data, 2023
Standardized Precipitation Index (SPI) and Standardized Precipitation Evapotranspiration Index (SPEI), traditionally derived at a monthly scale, are widely used drought indices.
Rongrong Zhang, Virgílio A. Bento, Junyu Qi, Feng Xu, Jianjun Wu, Jianxiu Qiu, Jianwei Li, Wei Shui, Qianfeng Wang   +8 more
doaj   +1 more source