Results 41 to 50 of about 106,270 (318)

Alternative Asymptotics and the Partially Linear Model with Many Regressors [PDF]

open access: yes, 2015
Non-standard distributional approximations have received considerable attention in recent years. They often provide more accurate approximations in small samples, and theoretical improvements in some cases.
Cattaneo, Matias D.   +2 more
core   +1 more source

Enumeration of shifting U-shaped standard Young tableaux

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2023
This paper studies the enumeration problem of the standard Young tableaux in the shifted U-shaped semiclosed model, which is obtained by folding the first cell of the U-shaped in the southwest corner to the northeast corner.
FU Yao; SUN Ping; JIANG Songshui
doaj   +1 more source

Moments and central limit theorems for some multivariate Poisson functionals

open access: yes, 2014
This paper deals with Poisson processes on an arbitrary measurable space. Using a direct approach, we derive formulae for moments and cumulants of a vector of multiple Wiener-It\^o integrals with respect to the compensated Poisson process.
Billingsley   +7 more
core   +1 more source

Estimation of Distribution Overlap of Urn Models [PDF]

open access: yes, 2012
A classical problem in statistics is estimating the expected coverage of a sample, which has had applications in gene expression, microbial ecology, optimization, and even numismatics.
Hampton, Jerrad, Lladser, Manuel E.
core   +4 more sources

Clinical Correlates of Anxiety and Depression After Diagnosis of a Pediatric Brain Tumor

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The prevalence and clinical correlates of symptoms of anxiety and depression in pediatric patients with brain tumors are not well described. We aimed to identify clinical characteristics that are correlated with elevated symptoms of anxiety and depression following initial diagnosis.
Bryony J. Lucas   +16 more
wiley   +1 more source

Instrumental variable regression via kernel maximum moment loss

open access: yesJournal of Causal Inference, 2023
We investigate a simple objective for nonlinear instrumental variable (IV) regression based on a kernelized conditional moment restriction known as a maximum moment restriction (MMR).
Zhang Rui   +3 more
doaj   +1 more source

La somme des rangs de Wilcoxon, ses moments, sa distribution nulle,avec illustration et compléments [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2020
This paper delves into Wilcoxon's sum-of-ranks $R$ statistic (and Mann-Whitney's translated equivalent $U$) for testing the difference between two groups.
Laurencelle, Louis
doaj   +1 more source

Concordance Probability and Discriminatory Power in Proportional Hazards Regression [PDF]

open access: yes, 2005
The concordance probability is used to evaluate the discriminatory power and the predictive accuracy of nonlinear statistical models. We derive an analytic expression for the concordance probability in the Cox proportional hazards model.
Gonen, Mithat, Heller, Glenn
core   +2 more sources

Preoperative Cytopenia in Patients Affected by High‐Risk Neuroblastoma: Just a Matter of Platelets?

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background and Aims In patients affected by high‐risk neuroblastoma (HR‐NB), complete macroscopic resection (CMR) is associated with better outcomes. These patients are often cytopenic due to intensive induction regimens. The aim of the present study is to assess the impact of preoperative cytopenia on surgical outcome in patients with HR‐NB ...
Giorgio Persano   +13 more
wiley   +1 more source

Lyapunov-based analysis and worm extinction in wireless networks using stochastic SVEIR model

open access: yesAlexandria Engineering Journal
In this study, we present a novel stochastic SVEIR (Susceptible–Vaccinated–Exposed–Infectious–Recovered) model specifically designed to analyze worm propagation in wireless sensor networks (WSNs) influenced by both white and Lévy noises, along with a ...
Abdulwasea Alkhazzan   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy