Results 81 to 90 of about 1,921,865 (309)

Bayesian Extreme Value Mixture Modelling for Estimating VaR [PDF]

A new extreme value mixture modelling approach for estimating Value-at-Risk (VaR) is proposed, overcoming the key issues of determining the threshold which defines the distribution tail and accounts for uncertainty due to threshold choice.
Les Oxley, Xin Zhao, Carl John Scarrott, Marco Reale   +3 more
core  

Predictive Ability of Plasma p‐tau217 for β‐Amyloid Status: A Prospective Multicenter Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma tau phosphorylated at threonine 217 (p‐tau217) measured with fully automated platforms has shown high accuracy for Alzheimer's disease (AD) diagnosis, but real‐world multicenter data remain limited. We aimed to validate the diagnostic performance of p‐tau217 for identifying AD pathology in a real‐world multicenter cohort ...
Miquel Massons, Nuria Guillen, Jordi Sarto, Neus Falgàs, Sergi Borrego‐Écija, Diana Esteller‐Gauxax, Magda Castellví, Adrià Tort‐Merino, Agnès Pérez‐Millan, Anna Antonell, Josep M. Augè Fradera, Gerard Piñol, Iolanda Riba, Anna Carnes‐Vendrell, Marta Cullell, Maria Teresa Osuna, Lorena Bajo, Teresa Romero, Eva Bonjoch, Joan Bello, Susana Fernández, Marta Balagué, Isabel Gómez‐Ruiz, Anuncia Boltes, Claustre Pont, Raquel Cuevas, Sara Carrillo, Laura Iglesias, Teresa Maria Casadevall Codina, Lorena Grau Guinea, Fernando Jose Espada, Raquel Sánchez‐Valle, Mircea Balasa, Albert Lladó   +33 more
wiley   +1 more source

Modeling Extreme Rainfall Using the Generalized Extreme Value Distribution and Exceedance Analysis in Colima, Mexico

Sensors
This study develops a statistical and technological framework to analyze extreme rainfall in Colima, Mexico, by integrating historical precipitation records, probabilistic modeling, and spatial visualization.
Raúl Renteria, Raúl Aquino, Mayrén Polanco   +2 more
doaj   +1 more source

Conditional normal extreme-value copulas

, 2020
We propose a new class of extreme-value copulas which are extreme-value limits of conditional normal models. Conditional normal models are generalizations of conditional independence models, where the dependence among observed variables is modeled using ...
Krupskii, Pavel, Genton, Marc G.
core   +1 more source

Remarkable Recovery After Delayed High‐Dose Methylprednisolone in a Rare Case of Penetrating Spinal Cord Injury

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Traumatic spinal cord injury (TSCI) caused by sharp‐force penetration is exceptionally rare, and the use of high‐dose methylprednisolone (MP) remains highly controversial, especially beyond the conventional 8‐h treatment window. This case report describes a 30‐year‐old male with acute incomplete TSCI following a knife stab wound to the right ...
Honghong Wang, Shuang Liu, Jiale Wang, Kaiyang Xue, Shenwei Li, Zhongheng Du   +5 more
wiley   +1 more source

An extreme value analysis of daily new cases of COVID-19 for sixteen countries in west Africa. [PDF]

Sci Rep, 2023
Nadarajah S, Ojo OO.
europepmc   +1 more source

Movement Disorders in Aicardi–Goutières Syndrome and Response to Immunomodulation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT This study characterizes movement disorders and treatment responses in seven children with Aicardi–Goutières syndrome (AGS). We retrospectively evaluated motor phenotypes, neuroimaging, and interferon signatures in patients treated with baricitinib or anifrolumab. Spasticity affected all patients, while dystonia was present in 4/7.
Enrique Gonzalez Saez‐Diez, Monica Ferrer Socorro, Kathryn Yang, Nicole Battaglia, Zainab Zaman, Mariko Bennett, Adeline Vanderver, Pui Y. Lee, Lauren A. Henderson, Milena M. Andzelm, Darius Ebrahimi‐Fakhari   +10 more
wiley   +1 more source

Data-driven upper bounds and event attribution for unprecedented heatwaves

Weather and Climate Extremes
The last decade has seen numerous record-shattering heatwaves in all corners of the globe. In the aftermath of these devastating events, there is interest in identifying worst-case thresholds or upper bounds that quantify just how hot temperatures can ...
Mark D. Risser, Likun Zhang, Michael F. Wehner   +2 more
doaj   +1 more source

BlackSheep: A Bioconductor and Bioconda Package for Differential Extreme Value Analysis. [PDF]

J Proteome Res, 2021
Blumenberg L, Kawaler EA, Cornwell M, Smith S, Ruggles KV, Fenyö D.   +5 more
europepmc   +1 more source

Predicting extreme VaR: Nonparametric quantile regression with refinements from extreme value theory [PDF]

This paper studies the performance of nonparametric quantile regression as a tool to predict Value at Risk (VaR). The approach is flexible as it requires no assumptions on the form of return distributions.
Julia Schaumburg
core