Results 21 to 30 of about 450,020 (291)

Bearing-only target localization with uncertainties in observer position [PDF]

open access: yes, 2010
In this paper, the bearing-only target localization problem when the observer positions are subject to error is investigated. In this problem, the angle of arrival of the transmitted signal between target and observer are used to estimate the target ...
Gholami, Mohammad Reza   +2 more
core   +1 more source

Development of Douglas fir merchantable stem volume model in the conditions of the Czech Republic

open access: yesJournal of Forest Science, 2023
A precise merchantable stem volume model of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] is missing in the Czech Republic. The aim of this study was to fit a new model through the reparametrization of volume equations (used in the Czech Republic or
Radoslav Hlavica, Zdeněk Adamec
doaj   +1 more source

RSS-based sensor localization with unknown transmit power [PDF]

open access: yes, 2011
Received signal strength (RSS)-based single source localization when there is not a prior knowledge about the transmit power of the source is investigated.
Gholami, Mohammad Reza   +2 more
core   +1 more source

Bias Correction in Logarithmic Regression and Comparison with Weighted Regression for Nonlinear Models [PDF]

open access: yes, 2011
Non-linear models with heteroscedasticity are commonly used in ecological and forestry modeling, and logarithmic regression and weighted regression are usually employed to estimate the parameters. Using the single-tree biomass data of three large samples,
Shou Zheng Tang, Wei Sheng Zeng
core   +2 more sources

Soil radium, soil gas radon and indoor radon empirical relationships to assist in post-closure impact assessment related to near-surface radioactive waste disposal [PDF]

open access: yes, 2009
Least squares (LS), Theil’s (TS) and weighted total least squares (WTLS) regression analysis methods are used to develop empirical relationships between radium in the ground, radon in soil and radon in dwellings to assist in the post-closure assessment ...
J.D. Appleton   +32 more
core   +4 more sources

On a Problem of Weighted Low-Rank Approximation of Matrices

open access: yes, 2017
We study a weighted low rank approximation that is inspired by a problem of constrained low rank approximation of matrices as initiated by the work of Golub, Hoffman, and Stewart (Linear Algebra and Its Applications, 88-89(1987), 317-327).
Dutta, Aritra, Li, Xin
core   +1 more source

An adapted version of the element-wise weighted total least squares method for applications in chemometrics

open access: yes, 2007
The Maximum Likelihood PCA (MLPCA) method has been devised in chemometrics as a generalization of the well-known PCA method in order to derive consistent estimators in the presence of errors with known error distribution.
Markovsky, Ivan   +2 more
core   +1 more source

Algorithms and statistical analysis for linear structured weighted total least squares problem

open access: yesGeodesy and Geodynamics
Weighted total least squares (WTLS) have been regarded as the standard tool for the errors-in-variables (EIV) model in which all the elements in the observation vector and the coefficient matrix are contaminated with random errors.
Jian Xie   +4 more
doaj   +1 more source

Analysing the spatial context of the altimetric error pattern of a digital elevation model using multiscale geographically weighted regression

open access: yesEuropean Journal of Remote Sensing, 2023
Many freely available Digital Elevation Models (DEM) have increasingly been used worldwide due to the difficulty in acquiring accurate elevation data in some regions, emphasizing the need to investigate their accuracy and the factors that may influence ...
Zuleide Ferreira   +2 more
doaj   +1 more source

Sparsity-Cognizant Total Least-Squares for Perturbed Compressive Sampling [PDF]

open access: yes, 2010
Solving linear regression problems based on the total least-squares (TLS) criterion has well-documented merits in various applications, where perturbations appear both in the data vector as well as in the regression matrix.
Geert Leus   +4 more
core   +1 more source

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