Results 31 to 40 of about 714 (114)

Generalized distributions of order k associated with success runs in Bernoulli trials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 13, Page 801-815, 2003., 2003
In a sequence of independent Bernoulli trials, by counting multidimensional lattice paths in order to compute the probability of a first‐passage event, we derive and study a generalized negative binomial distribution of order k, type I, which extends to distributions of order k, the generalized negative binomial distribution of Jain and Consul (1971 ...
Gregory A. Tripsiannis   +2 more
wiley   +1 more source

A practical illustration of the importance of realistic individualized treatment rules in causal inference

open access: yes, 2007
The effect of vigorous physical activity on mortality in the elderly is difficult to estimate using conventional approaches to causal inference that define this effect by comparing the mortality risks corresponding to hypothetical scenarios in which all ...
Bembom, Oliver, van der Laan, Mark J.
core   +1 more source

Asymptotic Behaviour of a Supercritical Galton-Watson Process with Controlled Binomial Migration [PDF]

open access: yes, 2000
AMS subject classification: 60J80, 62F12, 62P10.This paper considers a branching process generated by an offspring ...
Jacob, Christine
core  

Multiple testing procedures under confounding

open access: yes, 2008
While multiple testing procedures have been the focus of much statistical research, an important facet of the problem is how to deal with possible confounding. Procedures have been developed by authors in genetics and statistics.
Ghosh, Debashis
core   +1 more source

Concatenación temporal de modelos espaciales y su aplicación al estudio de la meningitis en España [PDF]

open access: yes, 2001
La cartografía de enfermedades infecciosas en periodos sucesivos plantea la necesidad de su extensión al caso dinámico. En este trabajo proponemos la concatenación temporal de modelos auto-regresivos espaciales para abordar el análisis de mortalidad por ...
Ferrándiz, J.   +2 more
core   +5 more sources

Tree-based conditional copula estimation

open access: yesDependence Modeling
This article proposes a regression tree procedure to estimate conditional copulas. The associated algorithm determines classes of observations based on covariate values and fits a simple parametric copula model on each class.
Bonacina Francesco   +2 more
doaj   +1 more source

Relative frequencies in multitype branching processes

open access: yes, 2009
This paper considers the relative frequencies of distinct types of individuals in multitype branching processes. We prove that the frequencies are asymptotically multivariate normal when the initial number of ancestors is large and the time of ...
Yakovlev, Andrei Y., Yanev, Nikolay M.
core   +2 more sources

Simulation study on the impact of measurement errors in hierarchical Bayesian semi-parametric models

open access: yesComputational and Mathematical Biophysics
This study examines the impact of measurement errors on parameter estimates within hierarchical Bayesian semiparametric (HBS) models, with a focus on the Lotka–Volterra predator–prey model as a case study.
Langat Amos Kipkorir   +2 more
doaj   +1 more source

Optimal precision of coarse structural nested mean models to estimate the effect of initiating ART in early and acute HIV infection

open access: yesJournal of Causal Inference
Time-dependent coarse structural nested mean models (coarse SNMMs) were developed to estimate treatment effects from longitudinal observational data. Coarse SNMMs estimate the combined effect of multiple treatment dosages and are thus useful to estimate ...
Lok Judith J.
doaj   +1 more source

Statistical, machine learning, and deep learning models for COVID-19 forecasting in Kenya

open access: yesComputational and Mathematical Biophysics
This study aims to enhance coronavirus disease 2019 forecasting in Kenya by comparing the predictive performance of statistical, machine learning, and deep learning (DL) models for total cases, critical cases, severe cases, and total deaths, using data ...
Kiarie Joyce   +4 more
doaj   +1 more source

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