Results 21 to 30 of about 1,928,307 (242)
Minimum Variance Beamforming Based on Covariance Matrix Reconstruction Using Orthogonal Vectors [PDF]
مدیریت مهندسی و رایانش نرم, 2023 Minimum Variance Beamforming methods, have a weak performance in situation where error is available in covariance matrix estimation of noise and interference.
Saman Rezaeizadeh, Mehdi Bekrani
doaj
SEF-USIEF FEATURE SELECTOR: AN APPROACH TO SELECT EFFECTIVE FEATURES AND UNSELECT INEFFECTIVE FEATURES [PDF]
ICTACT Journal on Soft Computing, 2023 Feature selection is a method in Data mining to reduce the features from the original dataset by removing the noisy features from the dataset to improve the performance of the classifiers in terms of improving the prediction accuracy.
Subitha Sivakumar +2 more
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Metrika, 1986 Minimizing \(\int \{{\hat \theta}(x)\}^ 2f(x)d\mu\) is discussed under the unbiasedness condition: \(\int {\hat \theta}(x)f_ i(x)d\mu =c_ i\quad (i=1,...,p)\) and the condition (A): \(f_ i(x)\quad (i=1,...,p)\) are linearly independent, \[ \int \{f_ i(x)\}^ 2/f(x)d\mu
Takeuchi, K., Akahira, M.
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Minimum-Variance Control System with Variable Control Penalty Factor
Applied Sciences, 2020 The present paper proposes (as the main contribution) an additional self-tuning mechanism for an adaptive minimum-variance control system, whose main goal is to extend its functionality for a large value range of unmeasurable perturbations which disturb ...
Ioan Filip +3 more
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The Limits to Minimum‐Variance Hedging [PDF]
Journal of Business Finance & Accounting, 2007 Abstract: In this paper, we compare the estimated minimum‐variance hedge ratios from a range of conditional hedging models with the ‘realized’ minimum variance hedge ratio constructed using intraday data. We show that the reduction in conditionally hedged portfolio variance falls far short of the ex post maximal reduction in variance obtained using ...
Harris, Richard DF +2 more
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Applied Sciences, 2021 For adaptive ultrasound imaging, a reliable estimation of the covariance matrix has a decisive influence on the performance of beamformers. In this paper, we propose a new cross subaperture averaging generalized sidelobe canceler approach (GSC-CROSS) for
Jin Yang +5 more
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The energetic basis for smooth human arm movements
eLife, 2021 The central nervous system plans human reaching movements with stereotypically smooth kinematic trajectories and fairly consistent durations. Smoothness seems to be explained by accuracy as a primary movement objective, whereas duration seems to ...
Jeremy D Wong, Tyler Cluff, Arthur D Kuo
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Design and real time implementation of nonlinear minimum variance filter [PDF]
, 2008 In this paper, the design and real time implementation of a Nonlinear Minimum Variance (NMV) estimator is presented using a laboratory based ball and beam system. The real time implementation employs a LabVIEW based tool. The novelty of this work lies in
Grimble, M.J., Naz, Shamser Ali
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An Optimal Integral Controller for Adaptive Optics Systems
Sensors, 2023 Integral controllers are commonly employed in astronomical adaptive optics. This work presents a novel tuning procedure for integral controllers in adaptive optics systems which relies on information about the measured disturbances. This tuning procedure
Pedro Escárate +3 more
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Sensors, 2021 The plane wave compounding (PWC) is a promising modality to improve the imaging quality and maintain the high frame rate for ultrafast ultrasound imaging.
Xin Yan +3 more
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