Results 301 to 310 of about 234,218 (345)

Chebyshev Accelerated Spectral Clustering

Proceedings of the 14th ACM International Conference on Web Search and Data Mining, 2021
Spectral clustering is widely used in modern data analysis. Spectral clustering methods speed up the computation and keep useful information by reducing dimensionality. Recently, graph signal filtering (GSF) has been introduced to further speed up the dimensionality reduction process by avoiding solving eigenvectors.
Tianyu Yu, Yonghua Zhao, Rongfeng Huang, Shifang Liu, Xinyin Zhang   +4 more
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Accelerating ptychography with spectral initializations

Quantitative Phase Imaging VII, 2021
Combining synthetic aperture approaches with reference-less setups, ptychography is a promising phase retrieval technique for label-free quantitative phase imaging. Within the phase retrieval community, spectral methods are known to accelerate gradient descent schemes, however their positive effect on experimental ptychographic datasets has not been ...
Lorenzo Valzania, Jonathan Dong, Sylvain Gigan   +2 more
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Empirical Correlations between the Spectral Input Energy and Spectral Acceleration

Journal of Earthquake Engineering, 2022
Correlating different intensity measures (IMs) enables the joint consideration of multiple IMs in various performance-based earthquake engineering applications, such as ground motion selection. The correlations between the spectral input energy and spectral accelerations have not been previously examined.
Yin Cheng, Jianfeng Wang, Yingbin Zhang, Fabrizio Mollaioli   +3 more
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Accelerated Spectral Analysis of Compact Operators

SIAM Journal on Numerical Analysis, 1984
Let K be a linear compact operator in a Banach space. The eigenvalues and eigenelements of K are to be approximated. Let \(\tilde K\) be an operator of a finite rank such that \(r(\Delta)
Dellwo, David R., Friedman, Morton B.
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Which Spectral Acceleration are you Using?

Earthquake Spectra, 2006
Analysis of the seismic risk to a structure requires assessment of both the rate of occurrence of future earthquake ground motions (hazard) and the effect of these ground motions on the structure (response). These two pieces are often linked using an intensity measure such as spectral acceleration. However, earth scientists typically use the geometric
Jack W. Baker, C. Allin Cornell
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Estimate of spectral and pseudo-spectral acceleration proximity

Engineering Structures, 2008
Abstract This paper deals with the deterministic relationship between spectral and pseudo-spectral acceleration, S A ( ξ , ω 0 ) and PS A ( ξ , ω 0 ) respectively, and gives the reason for their proximity on theoretical basis.
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Recovery of spectral absolute acceleration and spectral relative velocity from their pseudo-spectral counterparts

Earthquakes and Structures, 2013
Design spectra for damping ratios higher than 5% have several important applications in the design of earthquake-resistant structures. These highly damped spectra are usually derived from a 5%-damped reference pseudo-acceleration spectrum by using a damping modification factor.
George A. Papagiannopoulos, George D. Hatzigeorgiou, Dimitri E. Beskos   +2 more
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Photon spectral characteristics of dissimilar linear accelerators

Medical Physics, 2008
This work measures and compares the energy spectra of four dosimetrically matched beams, generated from four physically different linear accelerators. The goal of this work is twofold. First, this study determines whether the spectra of dosimetrically matched beams are measurably different.
William H. Hinson, William T. Kearns, Allan F. deGuzman, J. Daniel Bourland   +3 more
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