Results 101 to 110 of about 17,240 (299)

Using Extraneous Information and GMM to Estimate Threshold Parameters in TAR Models [PDF]

A prominent class of nonlinear time series models are threshold autoregressive models. Recently work by Kapetanios (2000) has shown in a Monte Carlo setting that the superconsistency property of the threshold parameter estimates does not translate to ...
George Kapetanios
core  

Maximizing a Family of Optimal Statistics over a Nuisance Parameter with Applications to Genetic Data Analysis

In this article, a simple algorithm is used to maximize a family of optimal statistics for hypothesis testing with a nuisance parameter not defined under the null hypothesis.
Gang Zheng
core   +1 more source

Placebo Effect in Levodopa‐Induced Dyskinesia: A Systematic Review and Meta‐Analysis

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Levodopa‐induced dyskinesia (LID) is a complication of Parkinson's disease (PD) treatment. While the placebo effect is a known component in PD clinical trials, its specific magnitude in the context of LID is not well characterized.
Luiz Vinicius Silva Correa, Alexandre Martins do Nascimento, Bruno Lopes Santos‐Lobato, Henry Mauricio Chaparro‐Solano, Ignacio Fernandez Mata, Vitor Tumas   +5 more
wiley   +1 more source

Confidence interval and test for the mean of a zero-inflated two-parameter negative binomial distribution

Research in Statistics
Zero-inflated over-dispersed count data arise in many applications, motivating the zero-inflated negative binomial family. We develop likelihood-based inference for the negative binomial two-parameter (NB2) component mean [Formula: see text] under a zero-
Md Mahadi Hasan, Md Monzur Murshed, Md Nahid Hasan   +2 more
doaj   +1 more source

Distinct Brain Drivers and Shared Cerebello–Cortical Input in ADCY5 and SGCE Hyperkinetic Movements

Movement Disorders, EarlyView.
Resting‐state fMRI and effective connectivity revealed distinct cerebellar–basal ganglia–cortical interactions in ADCY5 (MxMD‐ADCY5) and SGCE (MYC/DYT‐SGCE) related movement disorders. The cerebellum modulated cortex directly in MYC/DYT‐SGCE, but indirectly via basal ganglia‐cerebellar projections in MxMD‐ADCY5, which also showed reduced subthalamic ...
Clément Tarrano, Cécile Galléa, Asya Ekmen, Cécile Delorme, Eavan M. McGovern, Quentin Salardaine, Lina Daghsen, Manon Gomes, Vanessa Brochard, Eoin Mulroy, Kailash P. Bhatia, Carlo Fusco, Miryam Carecchio, Norbert Brüggemann, Alexander Münchau, Victoria Gonzalez, Diane Doummar, Christine Tranchant, Mathieu Anheim, Philippe Damier, Florence Riant, Mohamed Doulazmi, Agathe Roubertie, Caroline Dubacq, Oriane Trouillard, Romain Valabregue, Mélanie Didier, Benoit Beranger, Pierre Pouget, Marie Vidailhet, Sabine Meunier, Aurélie Méneret, Yulia Worbe, Emmanuel Roze   +33 more
wiley   +1 more source

R Package multiPIM: A Causal Inference Approach to Variable Importance Analysis

Journal of Statistical Software, 2014
We describe the R package multiPIM, including statistical background, functionality and user options. The package is for variable importance analysis, and is meant primarily for analyzing data from exploratory epidemiological studies, though it could ...
Stephan J Ritter, Nicholas P Jewell, Alan E Hubbard   +2 more
doaj   +1 more source

An Alternative Criterion to Likelihood for Parameter Estimation Accounting for Prior Information on Nuisance Parameter

, 2007
this paper we propose an alternative tool to marginal likelihood for parameter estimation when we want to account for some prior information on a nuisance parameter.
Ali Mohammad-Djafari, Adel Mohammadpour
core  

Gray Matter Microstructure Measured Using Diffusion Imaging as a Biomarker of Severity in Lewy Body Diseases

Movement Disorders, EarlyView.
Abstract Background Despite widespread cortical involvement in Lewy body diseases, conventional gray matter magnetic resonance imaging (MRI) shows limited sensitivity. Diffusion‐weighted MRI‐derived microstructural measures have shown utility in Alzheimer's disease, but their application across the Lewy body disease spectrum remains limited ...
Angeliki Zarkali, Ivelina Dobreva, Naomi Hannaway, Rohan Bhome, George E.C. Thomas, Steffani Carrera, Amanda J. Heslegrave, Elena Veleva, Henrik Zetterberg, Rimona S. Weil   +9 more
wiley   +1 more source

Growth Estimators and Confidence Intervals for the Mean of Negative Binomial Random Variables with Unknown Dispersion

Journal of Probability and Statistics, 2013
The negative binomial distribution becomes highly skewed under extreme dispersion. Even at moderately large sample sizes, the sample mean exhibits a heavy right tail.
David Shilane, Derek Bean
doaj   +1 more source

Statistical Characteristics of Signal Parameter Estimation by Normalized Correlation Function Maximization

Известия высших учебных заведений России: Радиоэлектроника, 2018
In this paper differences between Fisher Information Matrix (FIM) and inverse covariation matrix of normalized correlation estimations for white and colored noise are investigated.
I. V. Gogolev, G. Yu. Yashin
doaj   +1 more source