Results 101 to 110 of about 231,426 (276)

Estimating Semiparametric ARCH (8) Models by Kernel Smoothing Methods [PDF]

open access: yes
We investigate a class of semiparametric ARCH(8) models that includes as a special case the partially nonparametric (PNP) model introduced by Engle and Ng (1993) and which allows for both flexible dynamics and flexible function form with regard to the ...
Enno Mammen, Oliver Linton
core  

Nonparametric curve estimation with bernstein estimates

open access: yesMetrika, 1997
For the estimation of the regression function in a random design model a Bernstein type estimator is proposed. The author studies various local and global asymptotic properties of this estimator: Consistency and asymptotic normality at a fixed point are proved and an asymptotic expression for the expectation of the estimator is derived.
openaire   +1 more source

The Microbiota Shapes Central Nervous System Myelination in Early Life

open access: yesAdvanced Science, EarlyView.
Gut microbiota shapes brain development by regulating myelination and glial cell maturation in early life. Using germ‐free (GF) mice and zebrafish, this study reveals sex‐ and age‐dependent effects on myelin growth, integrity, and related gene expression.
Caoimhe M. K. Lynch   +13 more
wiley   +1 more source

SNM Guide [PDF]

open access: yes
This is a guide that explains how to use software that implements the simulated nonparametric moments (SNM) estimator proposed by Creel and Kristensen (2009). The guide shows how results of that paper may easily be replicated, and explains how to install
Dennis Kristensen, Michael Creel
core  

Mendelian Randomization and Double Machine Learning Modeling Reveal Brain Imaging‐Derived Phenotypes as Functional Contributors to 18 Autoimmune Inflammatory Diseases

open access: yesAdvanced Science, EarlyView.
This schematic integrates the eight statistically significant causal relationships identified between 1,366 brain imaging‐derived phenotypes (IDPs) and 18 autoimmune inflammatory diseases (AIDs). Arrows indicate the direction of causality inferred from bidirectional two‐sample MR analyses.
Jinbin Chen   +8 more
wiley   +1 more source

Nonparametric Functions Estimation Using Biased Data

open access: yesMathematics
Biased or weighted sampling frequently arises in reliability testing, biomedical survival analysis, and quality-control studies, where the observed data deviate systematically from the target population.
Abdel-Salam G. Abdel-Salam   +1 more
doaj   +1 more source

The econometrics of auctions with asymmetric anonymous bidders [PDF]

open access: yes
We consider standard auction models when bidders' identities are not observed by the econometrician. First, we adapt the definition of identifiability to a framework with anonymous bids and we explore the extent to which anonymity reduces the possibility
Laurent Lamy
core  

A Scalable Framework for Comprehensive Typing of Polymorphic Immune Genes from Long‐Read Data

open access: yesAdvanced Science, EarlyView.
SpecImmune introduces a unified computational framework optimized for long‐read sequencing to resolve over 400 highly polymorphic immune genes. This scalable approach achieves high‐resolution typing, enabling the discovery of cross‐family co‐evolutionary networks and population‐specific diversity.
Shuai Wang   +5 more
wiley   +1 more source

Integral Least-Squares Inferences for Semiparametric Models with Functional Data

open access: yesJournal of Applied Mathematics, 2014
The inferences for semiparametric models with functional data are investigated. We propose an integral least-squares technique for estimating the parametric components, and the asymptotic normality of the resulting integral least-squares estimator is ...
Limian Zhao, Peixin Zhao
doaj   +1 more source

Characterization of the asymptotic distribution of semiparametric M-estimators [PDF]

open access: yes
This paper develops a concrete formula for the asymptotic distribution of two-step, possibly non-smooth semiparametric M-estimators under general misspecification.
Hidehiko Ichimura, Sokbae 'Simon' Lee
core  

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