Results 31 to 40 of about 91,565 (275)

Robust Parameter Estimation of an Empirical Manoeuvring Model Using Free-Running Model Tests

open access: yesJournal of Marine Science and Engineering, 2021
The work presents the identification and validation of the hydrodynamic coefficients for the surge, sway, and yaw motion. This is performed in two ways: using simulated data and free-running test data.
Ana Catarina Costa   +2 more
doaj   +1 more source

Correlation kernels for sums and products of random matrices [PDF]

open access: yes, 2015
Let $X$ be a random matrix whose squared singular value density is a polynomial ensemble. We derive double contour integral formulas for the correlation kernels of the squared singular values of $GX$ and $TX$, where $G$ is a complex Ginibre matrix and $T$
Claeys, Tom   +2 more
core   +3 more sources

Research on the Spectral Reconstruction of a Low-Dimensional Filter Array Micro-Spectrometer Based on a Truncated Singular Value Decomposition-Convex Optimization Algorithm

open access: yesIEEE Photonics Journal, 2023
Currently, the engineering of miniature spectrometers mainly faces three problems: the mismatch between the number of filters at the front end of the detector and the spectral reconstruction accuracy; the lack of a stable spectral reconstruction ...
Jiakun Zhang   +3 more
doaj   +1 more source

Hybrid Threshold Denoising Framework Using Singular Value Decomposition for Side-Channel Analysis Preprocessing

open access: yesEntropy, 2023
The traces used in side-channel analysis are essential to breaking the key of encryption and the signal quality greatly affects the correct rate of key guessing.
Yuanzhen Wang   +7 more
doaj   +1 more source

Early stopping for statistical inverse problems via truncated SVD estimation [PDF]

open access: yes, 2018
We consider truncated SVD (or spectral cut-off, projection) estimators for a prototypical statistical inverse problem in dimension $D$. Since calculating the singular value decomposition (SVD) only for the largest singular values is much less costly than
Blanchard, Gilles   +2 more
core   +4 more sources

New Parametric Imaging Method with Fluorescein Angiograms for Detecting Areas of Capillary Nonperfusion [PDF]

open access: yesHealthcare Informatics Research, 2014
ObjectivesFluorescein angiography (FAG) is currently the most useful diagnostic modality for examining retinal circulation, and it is frequently used for the evaluation of patients with diabetic retinopathy, occlusive diseases, such as retinal venous and
Young Jae Kim   +5 more
doaj   +1 more source

Numerical investigations of linear least squares methods for derivative estimation [PDF]

open access: yes, 2009
The results of a numerical investigation into the errors for least squares estimates of function gradients are presented. The underlying algorithm is obtained by constructing a least squares problem using a truncated Taylor expansion.
Belward, John A.   +2 more
core   +3 more sources

OptShrink: An algorithm for improved low-rank signal matrix denoising by optimal, data-driven singular value shrinkage [PDF]

open access: yes, 2014
The truncated singular value decomposition (SVD) of the measurement matrix is the optimal solution to the_representation_ problem of how to best approximate a noisy measurement matrix using a low-rank matrix.
Nadakuditi, Raj Rao
core   +1 more source

Seismic Random Noise Attenuation in the Laplace Domain Using Singular Value Decomposition

open access: yesIEEE Access, 2021
We attenuated incoherent seismic noise using singular value decomposition in the Laplace domain. Laplace-domain wavefields are sensitive to small-amplitude noise contaminating the first-arrival signals due to damping in the Laplace transform; this noise ...
Wansoo Ha, Changsoo Shin
doaj   +1 more source

Finding structure with randomness: Probabilistic algorithms for constructing approximate matrix decompositions [PDF]

open access: yes, 2010
Low-rank matrix approximations, such as the truncated singular value decomposition and the rank-revealing QR decomposition, play a central role in data analysis and scientific computing.
Halko, Nathan   +2 more
core   +5 more sources

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