Výsledky vyhledávání - "gradient-based minimization algorithms"

Gradient-Based Algorithms With Intermediate Observations in Static and Differential Games Autor Hossain, Mohammad Safayet, Simaan, Marwan A., Qu, Zhihua

“…In two-player static and differential games, strategic players often use available or delayed information about the other player's decisions and solve an…”
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Detection of Simulated Brain Strokes Using Microwave Tomography Autor Coli, Vanna Lisa, Tournier, Pierre-Henri, Dolean, Victorita, Kanfoud, Ibtissam El, Pichot, Christian, Migliaccio, Claire, Blanc-Feraud, Laure

“…Brain strokes are one of the leading causes of disability and mortality in adults in developed countries. Ischemic stroke (85% of total cases) and hemorrhagic…”
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Improved analysis‐error covariance matrix for high‐dimensional variational inversions: application to source estimation using a 3D atmospheric transport model Autor Bousserez, N., Henze, D. K., Perkins, A., Bowman, K. W., Lee, M., Liu, J., Deng, F., Jones, D. B. A.

“…Variational methods are widely used to solve geophysical inverse problems. Although gradient‐based minimization algorithms are available for high…”
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Sparse Reconstruction Using Hyperbolic Tangent as Smooth l1-Norm Approximation Autor Haider, Hassaan, Shah, Jawad Ali, Kadir, Kushsairy, Khan, Najeeb

“… However, l1 norm non-differentiable and gradient-based minimization algorithms are not applicable, due to this very reason there is a need to approximate l1 norm by its smooth approximation…”
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Hypersingular shape sensitivity boundary integral equation for crack identification under harmonic elastodynamic excitation Autor Rus, Guillermo, Gallego, Rafael

“… q BIE, and its use for the solution of the inverse problem when coupled to gradient-based minimization algorithms…”
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Developing a Geometric Deformable Model for Radar Shape Inversion Autor Yildirim, Alper, Yezzi, Anthony

“…In this paper, we develop a radar-based dense scene reconstruction model that extracts shape information embedded in the radar return signal. Our method uses a…”
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A Geometric Variational0 Approach to Shape Inversion for Radar Autor Yildirim, Alper

“…In this work, we develop a novel method for dense surface reconstruction of scenes using radar. For a given scene and a set of antennas looking towards to this…”
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High-fidelity Multidisciplinary Design Optimization of a 3D Composite Material Hydrofoil Autor Volpi, Silvia

“… Gradient-based minimization algorithms are generally applied to find local minima, due to their efficiency in solving problems with a large number of design variables…”
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Digital volume correlation including rotational degrees of freedom during minimization Autor Smith, Tait S., Bay, Brian K., Rashid, Mark M.

“… The partial derivative of both a normalized cross-correlation coefficient and the sum-of-squares correlation coefficient is derived for use with gradient-based minimization algorithms…”
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Seismic tomography of the southern California crust based on spectral-element and adjoint methods Autor Tape, Carl, Liu, Qinya, Maggi, Alessia, Tromp, Jeroen

“…We iteratively improve a 3-D tomographic model of the southern California crust using numerical simulations of seismic wave propagation based on a…”
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Ecosystem model optimization using in situ flux observations: benefit of Monte Carlo versus variational schemes and analyses of the year-to-year model performances Autor Santaren, D., Peylin, P., Bacour, C., Ciais, P., Longdoz, B.

“…Terrestrial ecosystem models can provide major insights into the responses of Earth's ecosystems to environmental changes and rising levels of atmospheric CO2…”
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Parameter extraction of microwave transistors using tree annealing Autor Steer, M.B., Bilbro, G.L., Trew, R.J., Skaggs, S.G.

“…The authors have developed an alternative formulation of simulated annealing using a tree-based Metropolis procedure called tree annealing. Tree annealing is…”
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Ocean acoustic tomography from different receiver geometries using the adjoint method Autor Zhao, Xiaofeng, Wang, Dongxiao

“… Based on the code tests of the tangent linear model, the adjoint model, and the gradient, the optimization problem is solved by a gradient-based minimization algorithm…”
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Plane-Wave Generation through General Near-Field In-Band Reflectarray Direct Layout Optimization with Figure of Merit Constraints in mm-Wave Band Autor Prado, Daniel R.

“…) and the use of a gradient-based minimization algorithm. To this end, the volume where the NF is computed is divided into a number of disjoint regions where the FoM are defined…”
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Parameter identification of nonlinear time-dependent rubber bushings models towards their integration in multibody simulations of a vehicle chassis Autor Puel, Guillaume, Bourgeteau, Béatrice, Aubry, Denis

“…Rubber bushings are extensively used linking parts in a vehicle chassis that allow to filter noise and vibration. They influence much, however, the transient…”
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Optimization of transmission spectra through periodic aperture arrays Autor Dobson, David C., Wadbro, Eddie

“… A level-set method combined with a filtering technique and a gradient-based minimization algorithm numerically solves the problem…”
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Data-Driven Geometric Control Method to the Attitude Control of a Carrier Rocket Autor Jiang, Hongru, Meng, Xiangyun, Kang, Tongna, Guo, Yue, Deng, Chao, Fan, Quan-Yong

“… On this basis, iterative algebraic equations for the construction of optimal feedback under Hamiltonian cohomology conditions are derived by designing gradient-based minimisation algorithms in convex…”
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Comparison of two image reconstruction algorithms for microwave tomography Autor Fhager, A., Persson, M.

“… One is a general, gradient‐based minimization algorithm. The other is the chirp pulse microwave computed tomography (CP‐MCT…”
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ESTIMATION OF IN-PLANE ELASTIC PARAMETERS AND STIFFENER GEOMETRY OF STIFFENED PLATES Autor CHAKRABORTY, S., MUKHOPADHYAY, M.

“…”. The parameter estimation problem is solved using an iterative-gradient-based minimization algorithm and can start from different randomly selected set of initial parameters. The Levenberg…”
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Geometric optimization of radiative enclosures through nonlinear programming Autor Daun, K J, Howell, J R, Morton, D P

“… The enclosure geometry is repeatedly adjusted with a gradient-based minimization algorithm until a near-optimum solution is found…”
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