Results 41 to 50 of about 45,005 (294)

Traffic Data Restoration Method Based on Tensor Weighting and Truncated Nuclear Norm [PDF]

open access: yesJisuanji kexue, 2023
The problem of missing data seriously affects a series of activities in intelligent transportation systems,such as monitoring traffic dynamics,predicting traffic flow,and deploying traffic planning through data.Therefore,a traffic flow data ...
WU Jiangnan, ZHANG Hongmei, ZHAO Yongmei, ZENG Hang, HU Gang
doaj   +1 more source

Observation and Inversion of Aerosol Particle Size Distribution over Yinchuan Area

open access: yesAtmosphere, 2021
Particle size distribution is one of the important microphysical parameters to characterize the aerosol properties. The aerosol optical depth is used as the function of wavelength to study the particle size distribution of whole atmospheric column ...
Jiandong Mao   +4 more
doaj   +1 more source

DEBLURRING STUDY OF DMSP/OLS NIGHTTIME LIGHT DATA BY RTSVD [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
DMSP/OLS, as the earliest Nighttime light remote sensing data, has great application value and can greatly improve the data quality by solving the blurring problem existing in the data.
C. Ren   +4 more
doaj   +1 more source

Difference-based Methods for Truncating the Singular Value Decomposition [PDF]

open access: yesCommunications in Statistics - Simulation and Computation, 2015
Given a noisy time series (or signal), one may wish to remove the noise from the observed series. Assuming that the noise-free series lies in some low dimensional subspace of rank r, a common approach is to embed the noisy time series into a Hankel trajectory matrix.
Dafydd Evans, Jonathan Gillard 0002
openaire   +2 more sources

A New Algorithm for Ill-Posed Problem of GNSS-Based Ionospheric Tomography

open access: yesRemote Sensing, 2023
Ill-posedness of GNSS-based ionospheric tomography affects the stability and the accuracy of the inversion results. Truncated singular value decomposition (TSVD) is a common algorithm of ionospheric tomography reconstruction.
Debao Wen   +5 more
doaj   +1 more source

An Improved Tikhonov-Regularized Variable Projection Algorithm for Separable Nonlinear Least Squares

open access: yesAxioms, 2021
In this work, we investigate the ill-conditioned problem of a separable, nonlinear least squares model by using the variable projection method. Based on the truncated singular value decomposition method and the Tikhonov regularization method, we propose ...
Hua Guo, Guolin Liu, Luyao Wang
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

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