Results 11 to 20 of about 95,197 (267)

M-estimators for isotonic regression [PDF]

open access: yesJournal of Statistical Planning and Inference, 2012
In this paper we propose a family of robust estimates for isotonic regression: isotonic M-estimators. We show that their asymptotic distribution is, up to an scalar factor, the same as that of Brunk's classical isotonic estimator. We also derive the influence function and the breakdown point of these estimates.
Alvarez, Enrique Ernesto   +1 more
openaire   +4 more sources

M Robust Weighted Ridge Estimator in Linear Regression Model

open access: yesAfrican Scientific Reports, 2023
Correlated regressors are a major threat to the performance of the conventional ordinary least squares (OLS) estimator. The ridge estimator provides more stable estimates in this circumstance.
Taiwo Stephen Fayose   +2 more
doaj   +1 more source

Improved regression in ratio type estimators based on robust M-estimation.

open access: yesPLoS ONE, 2022
In this article, a new robust ratio type estimator using the Uk's redescending M-estimator is proposed for the estimation of the finite population mean in the simple random sampling (SRS) when there are outliers in the dataset. The mean square error (MSE)
Khalid Ul Islam Rather   +3 more
doaj   +1 more source

Robust weighted ridge regression based on S – estimator

open access: yesAfrican Scientific Reports, 2023
Ordinary least squares (OLS) estimator performance is seriously threatened by correlated regressors often called multicollinearity. Multicollinearity is a situation when there is strong relationship between any two exogenous variables.
Taiwo Stephen Fayose   +3 more
doaj   +1 more source

On Inconsistent $M$-Estimators

open access: yesThe Annals of Statistics, 1982
If $M$ is not convex, and the underlying density is multi-modal, $M$-estimators can be inconsistent. Examples are given, as well as some positive results.
Freedman, D. A., Diaconis, P.
openaire   +3 more sources

An Improved Robust Fractal Image Compression Based on M-Estimator

open access: yesApplied Sciences, 2022
In this paper, a robust fractal image compression method based on M-estimator is presented. The proposed method applies the M-estimator to the parameter estimation in the fractal encoding procedure using Huber and Tukey’s robust statistics.
Penghe Huang, Dongyan Li, Huimin Zhao
doaj   +1 more source

Regularity and Uniqueness for Constrained M-Estimates and Redescending M-Estimates

open access: yesThe Annals of Statistics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kent, John T., Tyler, David E.
openaire   +3 more sources

A Method of m-Point Sinusoidal Signal Amplitude Estimation

open access: yesMeasurement Science Review, 2016
The paper presents a new and original method of m-point estimation of sinusoidal signal amplitude. In this method, an m-point estimator is calculated on the basis of m initial signal samples. The way the estimator is constructed is explained. It is shown
Sienkowski Sergiusz
doaj   +1 more source

Two Stage Robust Dawoud – Kibria Estimator for Handling multicollinearity and outliers in the linear Regression model. [PDF]

open access: yesMaǧallaẗ Al-Buḥūṯ Al-Tiǧāriyyaẗ
In the linear regression model, the least-squares (LS) estimator is commonly used to estimate regression parameters. However, LS becomes unreliable and unfavorable when the model is affected by multicollinearity and outliers simultaneously.
Enas Goda Mohamed
doaj   +1 more source

On Asymptotic Efficiency of the M2M4 Signal-to-Noise Estimator for Deterministic Complex Sinusoids

open access: yesSensors, 2021
The moment-based M2M4 signal-to-noise (SNR) estimator was proposed for a complex sinusoidal signal with a deterministic but unknown phase corrupted by additive Gaussian noise by Sekhar and Sreenivas.
Gianmarco Romano
doaj   +1 more source

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