Results 21 to 30 of about 1,552,349 (289)

Non-Gaussianity in the Weak Lensing Correlation Function Likelihood -- Implications for Cosmological Parameter Biases

open access: yes, 2020
We study the significance of non-Gaussianity in the likelihood of weak lensing shear two-point correlation functions, detecting significantly non-zero skewness and kurtosis in one-dimensional marginal distributions of shear two-point correlation ...
Eifler, Tim   +6 more
core   +1 more source

Testable likelihoods for beyond-the-standard model fits

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Studying potential BSM effects at the precision frontier requires accurate transfer of information from low-energy measurements to high-energy BSM models.
Anja Beck, Méril Reboud, Danny van Dyk
doaj   +1 more source

Jeffreys-prior penalty, finiteness and shrinkage in binomial-response generalized linear models [PDF]

open access: yes, 2020
Penalization of the likelihood by Jeffreys' invariant prior, or by a positive power thereof, is shown to produce finite-valued maximum penalized likelihood estimates in a broad class of binomial generalized linear models.
Firth, David, Kosmidis, Ioannis
core   +2 more sources

Composite Likelihood Inference by Nonparametric Saddlepoint Tests [PDF]

open access: yes, 2013
The class of composite likelihood functions provides a flexible and powerful toolkit to carry out approximate inference for complex statistical models when the full likelihood is either impossible to specify or unfeasible to compute.
Lunardon, Nicola, Ronchetti, Elvezio
core   +4 more sources

Renormalization group computation of likelihood functions for cosmological data sets [PDF]

open access: yes, 2018
I show how a renormalization group (RG) method can be used to incrementally integrate the information in cosmological large-scale structure data sets (including CMB, galaxy redshift surveys, etc.).
McDonald, Patrick
core   +2 more sources

The Analysis of Ranking Data Using Score Functions and Penalized Likelihood

open access: yesAustrian Journal of Statistics, 2017
In this paper, we consider different score functions in order summarize certain characteristics for one and two sample ranking data sets. Our approach is flexible and is based on embedding the nonparametric problem in a parametric framework.
Mayer Alvo, Hang Xu
doaj   +1 more source

Copula cosmology: Constructing a likelihood function [PDF]

open access: yesPhysical Review D, 2011
To estimate cosmological parameters from a given dataset, we need to construct a likelihood function, which sometimes has a complicated functional form. We introduce the copula, a mathematical tool to construct an arbitrary multivariate distribution function from one-dimensional marginal distribution functions with any given dependence structure. It is
Sato, Masanori   +2 more
openaire   +2 more sources

New developments in the ROOT fitting classes [PDF]

open access: yesEPJ Web of Conferences, 2019
The ROOT Mathematical and Statistical libraries have been recently improved both to increase their performance and to facilitate the modelling of parametric functions that can be used for performing maximum likelihood fits to data sets to estimate ...
Valls Xavier   +3 more
doaj   +1 more source

Quasi-Likelihood Functions

open access: yesThe Annals of Statistics, 1983
The connection between quasi-likelihood functions, exponential family models and nonlinear weighted least squares is examined. Consistency and asymptotic normality of the parameter estimates are discussed under second moment assumptions. The parameter estimates are shown to satisfy a property of asymptotic optimality similar in spirit to, but more ...
openaire   +3 more sources

Occupational stress and body composition of hospital workers: a follow-up study

open access: yesFrontiers in Public Health
This study sought to analyze the influence of occupational stress on the body composition of hospital workers after one year of follow-up. This prospective cohort study included 218 workers from one of the leading private hospitals in the municipality of
Carlos Rodrigo Nascimento de Lira   +4 more
doaj   +1 more source

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