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Understanding and modeling mortality patterns, especially differences in mortality rates between populations, is vital for demographic analysis and public health planning. We compare three statistical models within the age-period framework…

Applications · Statistics 2025-10-14 Giacomo Lanfiuti Baldi , Andrea Nigri , Han Lin Shang

Continuous-time multi-state survival models can be used to describe health-related processes over time. In the presence of interval-censored times for transitions between the living states, the likelihood is constructed using transition…

Methodology · Statistics 2017-03-24 Robson J. M. Machado , Ardo van den Hout

Recently, it has been shown that the transition rates of the illness-death model (IDM) for chronic conditions are related to the percentages of people in the states by a three-dimensional system of differential equations [Bri24]. The aim of…

Applications · Statistics 2025-02-05 Ralph Brinks

This paper aims to develop practical applications of the model for the highly technical measure-valued populations developed by the authors in \cite{FanEtal20}. We consider the problem of estimation of parameters in the general age and…

Statistics Theory · Mathematics 2025-06-30 Jie Yen Fan , Kais Hamza , Fima C. Klebaner , Ziwen Zhong

The use of artificial intelligence in clinical care to improve decision support systems is increasing. This is not surprising since, by its very nature, the practice of medicine consists of making decisions based on observations from…

Quantitative Methods · Quantitative Biology 2019-05-03 Isaac Mativo , Yelena Yesha , Michael Grasso , Tim Oates , Qian Zhu

We study a mathematical model describing the growth process of a population structured by age and a phenotypical trait, subject to aging, competition between individuals and rare mutations. Our goals are to describe the asymptotic behaviour…

Analysis of PDEs · Mathematics 2020-04-17 Samuel Nordmann , Benoît Perthame , Cécile Taing

Current work on speech-based dementia assessment focuses on either feature extraction to predict assessment scales, or on the automation of existing test procedures. Most research uses public data unquestioningly and rarely performs a…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-07 Franziska Braun , Christopher Witzl , Andreas Erzigkeit , Hartmut Lehfeld , Thomas Hillemacher , Tobias Bocklet , Korbinian Riedhammer

A conditional expectation function (CEF) can at best be partially identified when the conditioning variable is interval censored. When the number of bins is small, existing methods often yield minimally informative bounds. We propose three…

Econometrics · Economics 2018-03-01 Sam Asher , Paul Novosad , Charlie Rafkin

Genetic data are often used to infer demographic history and changes or detect genes under selection. Inferential methods are commonly based on models making various strong assumptions: demography and population structures are supposed…

Populations and Evolution · Quantitative Biology 2020-07-28 Clotilde Lepers , Sylvain Billiard , Matthieu Porte , Sylvie Méléard , Viet Chi Tran

Several approaches have been developed for forecasting mortality using the stochastic model. In particular, the Lee-Carter model has become widely used and there have been various extensions and modifications proposed to attain a broader…

Applications · Statistics 2011-08-04 Valeria D'Amato , Gabriella Piscopo , Maria Russolillo

The stochastic system approach to causality is applied to situations where the risk of death is not negligible. This approach grounds causality on physical laws, distinguishes system and observation and represents the system by multivariate…

Methodology · Statistics 2016-10-07 Daniel Commenges

The concept of random deaths in a computational model for population dynamics is critically examined. We claim that it is just an artifact, albeit useful, of computational models to limit the size of the populations and has no biological…

Statistical Mechanics · Physics 2007-05-23 J. S. Sa' Martins , S. Cebrat

Facial Expression Recognition (FER) systems based on deep learning have achieved impressive performance in recent years. However, these models often exhibit demographic biases, particularly with respect to age, which can compromise their…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 F. Xavier Gaya-Morey , Julia Sanchez-Perez , Cristina Manresa-Yee , Jose M. Buades-Rubio

Background: While deep learning technology, which has the capability of obtaining latent representations based on large-scale data, can be a potential solution for the discovery of a novel aging biomarker, existing deep learning methods for…

Machine Learning · Computer Science 2023-02-02 Seong-Eun Moon , Ji Won Yoon , Shinyoung Joo , Yoohyung Kim , Jae Hyun Bae , Seokho Yoon , Haanju Yoo , Young Min Cho

This research explores how total mortality figures relate to age-standardized death rates within the United States, using the complete historical record of national mortality statistics. Through a detailed investigation of both all-cause…

Other Quantitative Biology · Quantitative Biology 2026-01-21 Brandon Dunbar , Paramahansa Pramanik , Haley Kate Robinson

Aggregated health data such as claims data from health insurances become more and more available for research purposes. Estimates of excess mortality from prevalence and incidence of a chronic condition have only been possible for ages 50…

Populations and Evolution · Quantitative Biology 2019-08-13 Ralph Brinks

Motivated by improving mortality tables from human demography databases, we investigate statistical inference of a stochastic age-evolving density of a population alimented by time inhomogeneous mortality and fertility. Asymptotics are…

Statistics Theory · Mathematics 2019-03-05 Alexandre Boumezoued , Marc Hoffmann , Paulien Jeunesse

The Penna model is a model of evolutionary ageing through mutation accumulation where traditionally time and the age of an organism are treated as discrete variables and an organism's genome by a binary bit string. We reformulate the…

Populations and Evolution · Quantitative Biology 2007-05-23 J. B. Coe , Y. Mao

Cardiovascular diseases remain the leading global cause of mortality. Age is an important covariate whose effect is most easily investigated in a healthy cohort to properly distinguish the former from disease-related changes. Traditionally,…

Signal Processing · Electrical Eng. & Systems 2024-04-23 Gabriel Ott , Yannik Schaubelt , Juan Miguel Lopez Alcaraz , Wilhelm Haverkamp , Nils Strodthoff

The Gini coefficient of the life table is a concentration index that provides information on lifespan variation. Originally proposed by economists to measure income and wealth inequalities, it has been widely used in population studies to…

Populations and Evolution · Quantitative Biology 2022-09-28 José Manuel Aburto , Ugofilippo Basellini , Annette Baudisch , Francisco Villavicencio
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