Results 41 to 50 of about 6,008 (306)

Bias Reduction of Maximum Likelihood Estimates for an Asymmetric Class of Power Models with Applications

open access: yesRevstat Statistical Journal, 2023
In this paper we study some methods to reduce the bias for maximum likelihood estimation in the general class of alpha power models, specifically for the shape parameter. We find the modified maximum likelihood estimator using Firth's method and we show
Yolanda M. Gómez   +4 more
doaj  

Estimating Renyi Entropy of Several Exponential Distributions Under an Asymmetric Loss Function

open access: yesRevstat Statistical Journal, 2017
The present paper takes into account the estimation of the Renyi entropy of several exponential distributions under a linex loss function. The models under study are (i) several exponential distributions with a common scale parameter and unknown but ...
Suchandan Kayal , Somesh Kumar
doaj   +1 more source

An analytical study of equity derivatives traded on the NSE of India

open access: yesCogent Business & Management, 2022
To analyze day trading dynamics for Nifty Index futures and options contracts, a detailed study is steered to understand the quantum of volume traded and how volume traded affects the underlying volatility.
Parizad Phiroze Dungore   +2 more
doaj   +1 more source

Minimum Variance Unbiased Estimation for the Truncated Poisson Distribution

open access: yesThe Annals of Mathematical Statistics, 1958
1. Summary. A minimum variance unbiased estimator is provided for the parameter of a truncated Poisson distribution in the case of truncation on the left. In this connection the distribution is obtained for the sum of n independent identically distributed truncated Poisson random variables, and then well-known properties of sufficient statistics are ...
Tate, R. F., Goen, R. L.
openaire   +3 more sources

Annual 12‐Week Dosing Gap of Natalizumab: Clinical Efficacy, Blood Biomarkers, and CSF Cell Composition

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Natalizumab (NTZ) is a highly effective therapy for multiple sclerosis (MS); however, its use is limited by the risk of a rare potentially severe opportunistic brain infection, progressive multifocal leukoencephalopathy (PML). Alternative dosing strategies are evaluated to reduce PML risk while still maintaining efficacy, which ...
Regina Berkovich   +10 more
wiley   +1 more source

Efficient estimation of the density and distribution functions of Weibull-Burr XII distribution

open access: yesAlexandria Engineering Journal
This study takes into account the efficient estimation of the probability density function (PDF) of the Weibull-Burr XII distribution and the cumulative distribution function (CDF), which allows for greater flexibility than many other generalized ...
Amulya Kumar Mahto   +4 more
doaj   +1 more source

Multiple Comparisons for Exponential Median Lifetimes with the Control Based on Doubly Censored Samples

open access: yesMathematics, 2020
Under doubly censoring, the one-stage multiple comparison procedures with the control in terms of exponential median lifetimes are presented. The uniformly minimum variance unbiased estimator for median lifetime is found.
Shu-Fei Wu
doaj   +1 more source

Exosome Proteomics of SOD1D90A Mutation Suggest Early Disease Mechanisms, and FN1 as a Biomarker

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Amyotrophic lateral sclerosis (ALS) is a neuromuscular disease. Super oxide dismutase 1 (SOD1) gene mutations cause ALS, and the D90A mutation is associated with primarily upper motor neuron (UMN) loss. Objective Our goal is to reveal the early cellular events in ALS pathology and identify potential pharmacokinetic biomarkers, using well ...
Mukesh Gautam   +6 more
wiley   +1 more source

Area disease estimation based on sentinel hospital records. [PDF]

open access: yesPLoS ONE, 2011
BackgroundPopulation health attributes (such as disease incidence and prevalence) are often estimated using sentinel hospital records, which are subject to multiple sources of uncertainty.
Jin-Feng Wang   +10 more
doaj   +1 more source

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