نتایج جستجو برای: svd سریع

تعداد نتایج: 21394  

Journal: :Investigative ophthalmology & visual science 2017
Kwan Hyuk Cho Chi Kyung Kim Kyungmi Oh Seung-Won Oh Kyu Hyung Park Sang Jun Park

Purpose We investigated cerebral small vessel disease (SVD) in patients with incidental retinal vein occlusion (RVO). Methods This retrospective, case-control, observational trial included 125 patients with RVO who underwent brain magnetic resonance imaging (MRI) and 1105 age-matched controls who underwent comprehensive medical interviews and MRI. Underlying cardiovascular diseases and MRI fi...

2015
Christoph Best Regine Tschan Nikola Stieber Manfred E. Beutel Annegret Eckhardt-Henn Marianne Dieterich

Patients with somatoform vertigo and dizziness (SVD) disorders often report instability of stance or gait and fear of falling. Posturographic measurements indeed indicated a pathological postural strategy. Our goal was to evaluate the effectiveness of a psychotherapeutic and psychoeducational short-term intervention (PTI) using static posturography and psychometric examination. Seventeen SVD pa...

2017
Fei Wang Zhi-Rong Zou Dong Yuan Yi Gong Li Zhang Xun Chen Tao Sun Hua-Lin Yu

The present study was designed to explore the correlation between serum S100β levels and cognitive dysfunction in patients with cerebral small vessel disease (SVD). A total of 172 SVD patients participated in the study, and they were assigned to patients with no cognitive impairment (NCI group) and those with vascular cognitive impairment no dementia (VCIND group). In total, 105 people were rec...

2016
Roumen Kountchev Roumiana Kountcheva

The famous Singular Value Decomposition (SVD) is very efficient in the processing of multidimensional images, when efficient compression, and reduction of the features, used for objects recognition, are needed. The basic obstacle for the wide use of SVD is its high computational complexity. To solve the problem, here is offered the new approach for hierarchical image decomposition through SVD (...

Journal: :Stroke 2017
C Eleana Zhang Sau May Wong Renske Uiterwijk Julie Staals Walter H Backes Erik I Hoff Tobien Schreuder Cécile R L P N Jeukens Jacobus F A Jansen Robert J van Oostenbrugge

BACKGROUND AND PURPOSE Cerebral small vessel disease (SVD) is associated with cognitive impairment. This may be because of decreased microstructural integrity and microvascular perfusion, but data on these relationships are scarce. We determined the relationship between cognition and microvascular perfusion and microstructural integrity in SVD patients, using intravoxel incoherent motion imagin...

Journal: :journal of advances in computer research 0

the speech enhancement techniques are often employed to improve the quality and intelligibility of the noisy speech signals. this paper discusses a novel technique for speech enhancement which is based on singular value decomposition. this implementation utilizes a genetic algorithm based optimization method for reducing the effects of environmental noises from the singular vectors as well as t...

Journal: :Stroke 2011
Mostafa Khalilzada Kemal Dogan Can Ince Jan Stam

BACKGROUND AND PURPOSE It is unknown whether changes in cerebral small vessel disease (SVD) are limited to the brain or part of a generalized vascular disorder. METHODS We examined the sublingual microcirculation of 10 healthy controls, 10 patients with large vessel disease, and 8 with SVD, with side-stream dark field imaging. We analyzed 146 video fragments masked to the origin of the videos...

2014
Andrew J. Lawrence Ai Wern Chung Robin G. Morris Hugh S. Markus Thomas R. Barrick

OBJECTIVE To characterize brain network connectivity impairment in cerebral small-vessel disease (SVD) and its relationship with MRI disease markers and cognitive impairment. METHODS A cross-sectional design applied graph-based efficiency analysis to deterministic diffusion tensor tractography data from 115 patients with lacunar infarction and leukoaraiosis and 50 healthy individuals. Structu...

Journal: :CoRR 2013
Zemin Zhang Gregory Ely Shuchin Aeron Ning Hao Misha Elena Kilmer

In this paper we propose novel methods for compression and recovery of multilinear data under limited sampling. We exploit the recently proposed tensorSingular Value Decomposition (t-SVD)[1], which is a group theoretic framework for tensor decomposition. In contrast to popular existing tensor decomposition techniques such as higher-order SVD (HOSVD), t-SVD has optimality properties similar to t...

Journal: :Int. Arab J. Inf. Technol. 2012
Guang Li Yadong Wang

With the development of data mining technologies, privacy protection has become a challenge for data mining applications in many fields. To solve this problem, many privacy-preserving data mining methods have been proposed. One important type of such methods is based on Singular Value Decomposition (SVD). The SVD-based method provides perturbed data instead of original data, and users extract o...

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