نتایج جستجو برای: svd سریع

تعداد نتایج: 21394  

2016
Wen Zhang Fan Xiao Bin Li Siguang Zhang

Recently, LSI (Latent Semantic Indexing) based on SVD (Singular Value Decomposition) is proposed to overcome the problems of polysemy and homonym in traditional lexical matching. However, it is usually criticized as with low discriminative power for representing documents although it has been validated as with good representative quality. In this paper, SVD on clusters is proposed to improve th...

Journal: :Human brain mapping 2016
Anil M Tuladhar Ewoud van Dijk Marcel P Zwiers Anouk G W van Norden Karlijn F de Laat Elena Shumskaya David G Norris Frank-Erik de Leeuw

Cerebral small vessel disease (SVD), including white matter hyperintensities (WMH), lacunes and microbleeds, and brain atrophy, are related to cognitive impairment. However, these magnetic resonance imaging (MRI) markers for SVD do not account for all the clinical variances observed in subjects with SVD. Here, we investigated the relation between conventional MRI markers for SVD, network effici...

Journal: :CoRR 2017
Kim Batselier Wenjian Yu Luca Daniel Ngai Wong

We propose a new algorithm for the computation of a singular value decomposition (SVD) low-rank approximation of a matrix in the Matrix Product Operator (MPO) format, also called the Tensor Train Matrix format. Our tensor network randomized SVD (TNrSVD) algorithm is an MPO implementation of the randomized SVD algorithm that is able to compute dominant singular values and their corresponding sin...

Journal: :IEEE Transactions on Pattern Analysis and Machine Intelligence 2021

Journal: :Revue scientifique et technique 2007
S Bellini U Santucci G Zanardi E Brocchi R Marabelli

Swine vesicular disease (SVD) was first observed in Italy in 1966, and was initially diagnosed as foot and mouth disease (FMD). The causative agent of SVD was classified as an Enterovirus within the family Picornaviridae. It was included in the list of diseases notifiable to the World Organisation for Animal Health (OIE) because of the similarity of its lesions to those produced by FMD; however...

Journal: :JAMA neurology 2016
Hyung-Min Kwon Michael J Lynn Tanya N Turan Colin P Derdeyn David Fiorella Bethany F Lane Jean Montgomery L Scott Janis Zoran Rumboldt Marc I Chimowitz

IMPORTANCE Intracranial arterial stenosis (ICAS) and small vessel disease (SVD) may coexist. There are limited data on the frequency and risk factors for coexistent SVD and the effect of SVD on stroke recurrence in patients receiving medical treatment for ICAS. OBJECTIVE To investigate the frequency and risk factors for SVD and the effect of SVD on stroke recurrence in patients with ICAS. D...

2011
Blake Foster Sridhar Mahadevan Rui Wang

Approximation of matrices using the Singular Value Decomposition (SVD) plays a central role in many science and engineering applications. However, the computation cost of an exact SVD is prohibitively high for very large matrices. In this paper, we describe a GPU-based approximate SVD algorithm for large matrices. Our method is based on the QUIC-SVD introduced by [6], which exploits a tree-base...

2011
I. W. M. van Uden A. G. W. van Norden K. F. de Laat L. J. B. van Oudheusden R. A. R. Gons I. Tendolkar M. P. Zwiers F-E. de Leeuw

Introduction. Late onset depressive symptoms (LODSs) frequently occur in elderly with cerebral small vessel disease (SVD). SVD cannot fully explain LODS; a contributing factor could be amygdala volume. We investigated the relation between amygdala volume and LODS, independent of SVD in 503 participants with symptomatic cerebral SVD. Methods. Patients underwent FLAIR and T1 scanning. Depressive ...

Journal: :Circulation 2010
Willem Flameng Marie-Christine Herregods Monique Vercalsteren Paul Herijgers Kris Bogaerts Bart Meuris

BACKGROUND Prosthesis-patient mismatch (P-PtM) after aortic valve replacement results in disturbed valve performance associated with increased pressure gradients. However, it is unknown whether this can be related to future structural valve deterioration (SVD) of the bioprosthesis. METHODS AND RESULTS In 564 patients (mean age, 74+/-5 years) receiving an aortic valve bioprosthesis, clinical f...

2017
Yan Liang Yang-Kun Chen Min Deng Vincent C. T. Mok De-Feng Wang Gabor S. Ungvari Chiu-wing W. Chu Akane Kamiya Wai-Kwong Tang

Objective: Cerebral small vessel disease (SVD) is associated with increased mortality, disability and cognitive decline, depression in stroke survivors. This study examined the association between SVD burden, defined by a combination of SVD markers, and health-related quality of life (HRQoL) in acute ischemic stroke. Methods: Patients admitted with acute ischemic stroke of any etiology were pro...

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