Results 41 to 50 of about 296,448 (209)

A new covariance intersection based integrated SLAM framework for 3D outdoor agricultural applications

open access: yesElectronics Letters
This letter introduces a novel integrated framework for simultaneous localization and mapping (SLAM) tailored for general agricultural applications.
Hann‐Gyoo Kim   +2 more
doaj   +1 more source

High-Dimensional Quadratic Discriminant Analysis Under Spiked Covariance Model

open access: yesIEEE Access, 2020
Quadratic discriminant analysis (QDA) is a widely used classification technique that generalizes the linear discriminant analysis (LDA) classifier to the case of distinct covariance matrices among classes.
Houssem Sifaou   +2 more
doaj   +1 more source

A New Approach for Nonlinear Transformation of Means and Covariances in Direct Statistical Analysis of Nonlinear Systems

open access: yesIEEE Access, 2021
Covariance analysis describing function technique is a conventional method to solve the performance analysis of the nonlinear missile guidance system. Aiming at the faultiness of covariance analysis describing function technique and its improved method ...
Quancheng Li   +4 more
doaj   +1 more source

General balance, combination of information and the analysis of covariance [PDF]

open access: yes, 1992
A resume is given of the conditions and underlying theory for general balance of an experimental design, paying particular attention to their relationships to the usual linear models for analysis of variance and the marginality relationships between the ...
Tobias, R. D., Payne, R. W.
core  

Knowledge-Aided Structured Covariance Matrix Estimator Applied for Radar Sensor Signal Detection

open access: yesSensors, 2019
This study deals with the problem of covariance matrix estimation for radar sensor signal detection applications with insufficient secondary data in non-Gaussian clutter. According to the Euclidean mean, the authors combined an available prior covariance
Naixin Kang, Zheran Shang, Qinglei Du
doaj   +1 more source

Permutation Variation and Alternative Hyper-Sphere Decomposition

open access: yesMathematics, 2022
Current covariance modeling methods work well in longitudinal data analysis. In the analysis of data with no nature order, a common covariance modeling method would be inadequate.
Qingze Li, Jianxin Pan
doaj   +1 more source

The analysis of very small samples of repeated measurements I: an adjusted sandwich estimator [PDF]

open access: yes, 2010
The statistical analysis of repeated measures or longitudinal data always requires the accommodation of the covariance structure of the repeated measurements at some stage in the analysis. The general linear mixed model is often used for such analyses,
Skene, S.S.   +9 more
core   +1 more source

Analysis of a Rigid-Body Pose Estimator for Relative Spacecraft Navigation

open access: yesAerospace
This study presents a rigorous error analysis of a previously published estimator that determines the single-frame relative pose of two rigid bodies from batches of point and unit vector measurements.
Caitong Peng, Daniel Choukroun
doaj   +1 more source

Flexible Bayesian Dynamic Modeling of Correlation and Covariance Matrices [PDF]

open access: yes, 2020
Modeling correlation (and covariance) matrices can be challenging due to the positive-definiteness constraint and potential high-dimensionality. Our approach is to decompose the covariance matrix into the correlation and variance matrices and propose a ...
Shahbaba, Babak   +7 more
core   +1 more source

An anisotropic formulation of the parametric Kalman filter assimilation

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2021
In geophysics, the direct application of covariance matrix dynamics described by the Kalman filter (KF) is limited by the high dimension of such problems. The parametric Kalman filter (PKF) is a recent alternative to the ensemble Kalman filter, where the
Olivier Pannekoucke
doaj   +1 more source

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