[HTML][HTML] Generalized Bayesian shrinkage and wavelet estimation of location parameter for spherical distribution under balance-type loss: Minimaxity and admissibility

H Karamikabir, M Afshari - Journal of Multivariate Analysis, 2020 - Elsevier
One of the most important subject in multivariate analysis is parameters estimation. Among
different methods, the shrinkage estimation is of interest. In this paper we consider the …

Wavelet threshold based on Stein's unbiased risk estimators of restricted location parameter in multivariate normal

H Karamikabir, M Afshari, F Lak - Journal of Applied Statistics, 2021 - Taylor & Francis
In this paper, the problem of estimating the mean vector under non-negative constraints on
location vector of the multivariate normal distribution is investigated. The value of the …

Kinematic measures for recovery strategy identification following an obstacle-induced trip in gait

S Wang, T Bhatt - Journal of Motor Behavior, 2023 - Taylor & Francis
This study aimed to identify the kinematic measures determining balance outcome following
an over-ground trip perturbation. 117 healthy older adults who experienced laboratory …

[PDF][PDF] Comparison of some of estimation methods of stress-strength model: R= p (y< x< z)

SH Raheem, BA Kalaf, AN Salman - Baghdad Science Journal, 2021 - iasj.net
In this study, the stress-strength model 𝑅= 𝑃 (𝑌< 𝑋< 𝑍) is discussed as an important parts of
reliability system by assuming that the random variables follow Invers Rayleigh Distribution …

New wavelet SURE thresholds of elliptical distributions under the balance loss

H Karamikabir, M Afshari - Statistica Sinica, 2021 - JSTOR
In this paper, we introduce a new shrinkage soft-wavelet threshold estimator based on
Stein's unbiased risk estimate (SURE) for elliptical and spherical distributions under …

A Comparison for Some of the estimation methods of the Parallel Stress-Strength model In the case of Inverse Rayleigh Distribution

SH Raheem, HK Mansor, BA Kalaf… - 2019 First International …, 2019 - ieeexplore.ieee.org
In this study, we consider the system reliability of parallel stress-strength model as an
important part of system reliability by assuming the stress and the strengths random …

Two new Bayesian-wavelet thresholds estimations of elliptical distribution parameters under non-linear exponential balanced loss

Z Batvandi, M Afshari, H Karamikabir - … in Statistics-Simulation and …, 2025 - Taylor & Francis
The estimation of mean vector parameters is very important in elliptical and spherically
models. Among different methods, the Bayesian and shrinkage estimation are interesting. In …

Location parameter estimation for elliptical distribution under the balanced-LINEX loss

H Karamikabir, M Mohammadshahi… - Japanese Journal of …, 2024 - Springer
Location parameter estimation is an important problem in the point estimation for
multivariate distribution. In this paper, for an elliptical family of distributions with unknown …

Comparison of risk ratios of shrinkage estimators in high dimensions

A Hamdaoui, W Almutiry, M Terbeche, A Benkhaled - Mathematics, 2021 - mdpi.com
In this paper, we analyze the risk ratios of several shrinkage estimators using a balanced
loss function. The James–Stein estimator is one of a group of shrinkage estimators that has …

Polynomials shrinkage estimators of a multivariate normal mean

A Benkhaled, M Terbeche, A Hamdaoui - arXiv preprint arXiv:2107.14021, 2021 - arxiv.org
In this work, the estimation of the multivariate normal mean by different classes of shrinkage
estimators is investigated. The risk associated with the balanced loss function is used to …