Results 1 to 10 of about 127,725 (148)

An Improved Self-Born Weighted Least Square Method for Cylindricity Error Evaluation

open access: yesApplied Sciences, 2022
In order to improve the stability of the evaluation results and the gross error resistance of the algorithm in view of the widespread gross errors in geometric error evaluation, an improved self-born weighted least square method (ISWLS) is proposed in ...
Yunhan Yao, Ke Zhang
doaj   +1 more source

The Odd Log-Logistic Burr-X Family of Distributions: Properties and Applications

open access: yesJournal of Statistical Theory and Applications (JSTA), 2021
In this paper, a new class of distributions called the odd log-logistic Burr-X family with two extra positive parameters is introduced and studied. The new generator extends the odd log-logistic and Burr X distributions among several other well-known ...
Hamid Karamikabir   +3 more
doaj   +1 more source

Wide area measurement systems based Power System State Estimation using a Robust Linear-Weighted Least Square method

open access: yesEnergy Reports, 2023
The accuracy and robustness of Power System State Estimation (PSSE) are paramount for monitoring and surveillance of Energy Management Systems (EMS). To enhance the PSSE accuracy, phasor measurement units (PMUs) are widely used in Wide-area measurement ...
Sravan Kumar Kotha   +3 more
doaj   +1 more source

A Modified Iterative Weighted Least Squares Method [PDF]

open access: yesBritish Journal of Mathematics & Computer Science, 2014
The Iterative Weighted Least Squares (IWLS) method is one of the estimation procedures in logistic regression modeling. In consideration of the strategic role played by this model, especially in biometrics, the need to source for alternative logistic regression estimators has continued to resurface in the literature.
Nja M. E. , Nduka E. C. , Ogoke U. P.
openaire   +1 more source

Optimal weighted least-squares methods [PDF]

open access: yesThe SMAI Journal of computational mathematics, 2017
We consider the problem of reconstructing an unknown bounded function u defined on a domain X⊂ℝ d from noiseless or noisy samples of u at n points (x i ) i=1,⋯,n . We measure the reconstruction error in a norm L 2 (X,dρ) for some given probability measure dρ.
Cohen, Albert, Migliorati, Giovanni
openaire   +4 more sources

A Novel Weighted Localization Method in Wireless Sensor Networks Based on Hybrid RSS/AoA Measurements

open access: yesIEEE Access, 2021
A hybrid RSS/AOA indoor localization method based on error variance and measurement noise weighted least squares (ENWLS) is proposed. This method is based on three-dimensional wireless sensor networks, and achieves high-precision indoor positioning ...
Weizhong Ding, Shengming Chang, Jun Li
doaj   +1 more source

Locally weighted PCA regression to recover missing markers in human motion data.

open access: yesPLoS ONE, 2022
"Missing markers problem", that is, missing markers during a motion capture session, has been raised for many years in Motion Capture field. We propose the locally weighted principal component analysis (PCA) regression method to deal with this challenge.
Hai Dang Kieu   +3 more
doaj   +1 more source

Ridge Shrinkage Estimators in Finite Mixture of Generalized Estimating Equations. [PDF]

open access: yesMathematics and Modeling in Finance, 2022
The paper considers the problem of estimation of the parameters in  nite mixture models.In this article, a new method is proposed for of estimation of the parameters in  nite mixture models. Traditionally, the parameter estimation in  nite mixture models
Sajad Nezamdoust, Farzad Eskandari
doaj   +1 more source

The Least Square and the Weighted Least Square Methods for Estimating the Weibull Distribution Parameters - A Comparative Study

open access: yesCommunications, 2012
In this paper we study the performance of the least square method and the weighted least square method for estimating the Weibull distribution parameters. In engineering practice these methods are commonly used due to their simplicity.
Ivana Pobocikova, Zuzana Sedliackova
doaj   +1 more source

Application of K-PSO Clustering Algorithm and Game Theory in Rock Mass Quality Evaluation of Maji Hydropower Station

open access: yesApplied Sciences, 2023
In this study, the K-means algorithm based on particle swarm optimization (K-PSO) and game theory are introduced to establish the quality evaluation model of a rock mass.
Yunkai Ruan   +9 more
doaj   +1 more source

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