نتایج جستجو برای: random undersampling

تعداد نتایج: 284925  

Journal: :Journal of Hypertension 2023

Objective: Many modifiable and non-modifiable risk factors have been associated with hypertension. However, current screening programs are still failing in identifying individuals at higher of Given the major impact high blood pressure on cardiovascular events mortality, there is an urgent need to find new strategies improve hypertension detection. We aimed explore whether a machine learning (M...

Journal: :Digital 2022

It is hard to trust any data entry on online websites as some may be malicious, and gather for illegal or unintended use. For example, bank login credit card information can misused financial theft. To make users aware of the digital safety websites, we have tried identify learn pattern a dataset consisting features malicious benign websites. We treated problem differentiation between classific...

Journal: :Structural Health Monitoring-an International Journal 2021

Nonlinear modulation is a promising technique for ultrasonic non-destructive damage identification. A wireless sensor network ideally suited to monitor large structures using nonlinear in cost-efficient manner. However, existing approaches rely on high sampling rates and resource-demanding computations that are not feasible low-cost low-power devices. We present new indicator uses the short-tim...

2005
M. Lustig D. L. Donoho J. M. Pauly

M. Lustig, D. L. Donoho, J. M. Pauly Electrical Engineering, Stanford University, Stanford, CA, United States, Statistics, Stanford University, Stanford, CA, United States Introduction Recently a rapid imaging method was proposed [1] that exploits the fact that sparse or compressible signals, such as MR images, can be recovered from randomly under-sampled frequency data [1,2,3]. Because pure ra...

2009
L. Keith S. Kecskemeti Y. Wu J. Holmes K. Wang R. Busse F. Korosec

Introduction Vastly undersampled Isotropic Projection Reconstruction (VIPR) [1] techniques have been successfully utilized for time-resolved contrast-enhanced MR angiography (CE-MRA) studies. There are several benefits of a VIPR k-space trajectory, including the more benign nature of undersampling artifacts, which can facilitate higher undersampling factors. Due to the geometry of the legs, how...

1998
Nikolay Polyak William A. Pearlman

In this paper we present a new approach to ltering and reconstruction of periodic signals. The tool that proves to handle these tasks very eeciently is the discrete Zak transform. The discrete Zak transform can be viewed as the discrete Fourier transform performed on the signal blocks. It also can be considered the polyphase representation of periodic signals. Fast ltering-decimation-interpolat...

Journal: :Vision Research 1999
Rita Demanins Yi-Zhong Wang Robert F Hess

In order to understand the nature of the neural loss in strabismic amblyopia, we have applied a technique which has been used in the normal periphery to psychophysically probe the sampling properties of the neuronal population. We ask whether there is a 'sampling' deficit and if so whether it is based on either an absolute loss of neurons (i.e. spatial undersampling) or an irregular arrangement...

Journal: :Turkish journal of forecasting 2022

As of today, entrepreneurs and entrepreneurship are considered to be the integral parts economic technological advancements. Entrepreneurs promoted in many countries because their high return on investment opportunities both terms income new inventions. Numerous studies prove that have traits common these can correlate with each other. Based traits, potential predicted, current improved by real...

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