conjugate gradient method
Efficient spectral computation of the stationary states of rotating Bose-Einstein condensates by the preconditioned nonlinear conjugate gradient method
... nonlinear conjugate gradient method coupled with a spectral spatial dis- cretization scheme for computing the ground states (GS) of rotating Bose-Einstein condensates (BEC), modeled by the ...
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A cooperative conjugate gradient method for linear systems permitting efficient multi-thread implementation
... CG method named “multi- ple search direction conjugate gradient method” (MSD-CG), and its precondi- tioned version ...The method is midway between the CG method and the Block ...
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A complementary note on soft errors in the Conjugate Gradient method: the persistent error case
... 4 Agullo & Cools & Fatih-Yetkin & Giraud & Schenkels & Vanroose 1 Introduction This note is a complementary study to [ 1 ], where we investigated the resilience of the preconditioned conjugate ...
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A backward/forward recovery approach for the preconditioned conjugate gradient method
... Chen’s method is comparable to ours for middle to high fault rates, since it clearly outperforms ABFT-Detection in five out of nine cases, being slightly faster than ABFT-Correction for lower fault ...
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Development of numerical methods for the reactive transport of chemical species in a porous media : a nonlinear conjugate gradient method
... nonlinear conjugate gra- dient method, preconditioning ...nonlinear conjugate gradient methods to improve the resolution of the system F(x) = 0 where x is the discrete ...this method is ...
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Conjugate gradient algorithms for minor subspace analysis
... In this paper, we introduced a new conjugate gradient method for computing the minor eigenvector of a data correlation matrix. It was shown that this algorithm is less computationally demanding and ...
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A Majorize-Minimize memory gradient method for complex-valued inverse problems
... primal-dual method first proposed in [13] and further extended in [24, 40] (here designated by ...Alternating-Direction Method of Multipliers (ADMM) [2, 3, ...linear conjugate gradient ...
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A Conjugate Gradient Algorithm for Blind Sensor Calibration in Sparse Recovery
... Bretagne Atlantique, 35042 Rennes Cedex, France ABSTRACT This work studies the problem of blind sensor calibration (BSC) in linear inverse problems, such as compressive sens- ing. It aims to estimate the unknown complex ...
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A conjugate gradient like method for p-norm minimization in functional spaces
... Fig. 2 shows the reconstructed solution by using the conjugate gradient method in l 2 (a), and by using the proposed approach in l 1.8 (b), in l 1.5 (c) and in l 1.2 (d). As stopping criterion, the ...
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An efficient gradient-based method for differential-interference-contrast microscopy
... nonlinear conjugate gradient method, which is particularly suited for least squares prob- ...its gradient in order to ensure convergence [2], which significantly increases computational time ...
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Application of the topological gradient method to tomography
... topological gradient method for inverting the Radon ...logical gradient: one direct and one adjoint PDE ...topological gradient defined, and the edge set identified, one has to solve the ...
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The Truncated Conjugate Gradient (TCG), a Non-iterative/Fixed-cost Strategy for Computing Polarization in Molecular Dynamics: Fast Evaluation of Analytical Forces
... a method should be systematically improvable in order to allow the user to set the accuracy of the simulation depending on its ...cobi method has been shown not to converge in several cases 2 and adding ...
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Truncated Conjugate Gradient (TCG): an optimal strategy for the analytical evaluation of the many-body polarization energy and forces in molecular simulations
... Lanczos method is that it reduces the computational cost compared to direct methods (such as the one available in the LAPACK ...Lanczos method allows rapid access to the extreme eigenvalues by constructing ...
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Conjugate gradient Mojette reconstruction
... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ...
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Efficient Gradient Method for Locally Optimizing the Periodic/Aperiodic Ambiguity Function
... O(N 3 ) (where N is the number of elements in the sequences). But recent works [4] have shown the possibility to optimize the autocorrelation sidelobe energy by using an efficient gradient method which ...
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Efficient Gradient Method for Locally Optimizing the Periodic/Aperiodic Ambiguity Function
... Since the correlation can be performed using Fast Fourier Transforms, the result is that the gradient can be computed with O(Nlog(N)) operations. This important result offers the possibility to optimize quite long ...
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Efficient gradient method for locally optimizing the periodic/aperiodic ambiguity function
... a gradient descent is done by simply adjusting the descent step y during the ...global gradient is calculated once in each iteration. This gradient corresponds to the sum on : ƒ of the partial ...
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Single conjugate adaptive optics for METIS
... Single Conjugate Adaptive Optics (SCAO) system, which will provide the required wavefront correction in conjunction with the adaptive mirrors in the telescope ...
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A new spectroscopic method for measuring the temperature gradient in the solar photosphere
... spectroscopic method that allows us to measure the photospheric temperature ...this method is that it yields the temperature gradient on a geometric scale without having to rely on atmo- spheric ...
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Hardy spaces of the conjugate Beltrami equation
... 7 Conclusion This paper took a few steps towards a theory of two-dimensional Hardy spaces for the conjugate Beltrami equation on simply connected domains. Conspicuously missing is a factorization theory, whose ...
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