Výsledky vyhledávání - accelerated preconditioned proximal gradient algorithm

An accelerated preconditioned proximal gradient algorithm with a generalized Nesterov momentum for PET image reconstruction Autor Lin, Yizun, He, Yongxin, Schmidtlein, C Ross, Han, Deren

“…This paper presents an accelerated preconditioned proximal gradient algorithm (APPGA) for effectively solving a class of positron emission tomography…”
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An accelerated preconditioned proximal gradient algorithm with a generalized Nesterov momentum for PET image reconstruction Autor Lin, Yizun, He, Yongxin, C Ross Schmidtlein, Han, Deren

“…This paper presents an Accelerated Preconditioned Proximal Gradient Algorithm (APPGA) for effectively solving a class of Positron Emission Tomography…”
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An ordered-subsets proximal preconditioned gradient algorithm for edge-preserving PET image reconstruction Autor Mehranian, Abolfazl, Rahmim, Arman, Ay, Mohammad Reza, Kotasidis, Fotis, Zaidi, Habib

“… In this study, the authors propose a proximal preconditioned gradient algorithm accelerated with ordered subsets (PPG-OS…”
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An ordered-subsets proximal preconditioned gradient algorithm for total variation regularized PET image reconstruction Autor Mehranian, A., Rahmim, A., Ay, M. R., Kotasidis, F. A., Zaidi, H.

“… weighted least-squares (PWLS) cost function. In this study, a proximal preconditioned gradient algorithm accelerated with ordered subsets (PPG-OS…”
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An accelerated preconditioned primal-dual gradient algorithm for structured nonconvex optimization problems Autor Long, Xian-Jun, Nie, Jia-Lin, Gou, Zhun, Sun, Xiang-Kai, Li, Gao-Xi

“…•An novel accelerated preconditioned primal-dual gradient algorithm for solving nonconvex optimization problems by the conjugate duality theory of nonconvex functions…”
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Computing IGA-suitable planar parameterizations by PolySquare-enhanced domain partition Autor Xiao, Shiwei, Kang, Hongmei, Fu, Xiao-Ming, Chen, Falai

“…We propose an algorithm for computing injective IGA-suitable planar parameterizations with as uniform and orthogonal as possible iso-parametric structure…”
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Hyperfast second-order local solvers for efficient statistically preconditioned distributed optimization Autor Dvurechensky, Pavel, Kamzolov, Dmitry, Lukashevich, Aleksandr, Lee, Soomin, Ordentlich, Erik, Uribe, César A., Gasnikov, Alexander

“…) smaller-scale optimization problem. The recently proposed Statistically Preconditioned Accelerated Gradient (SPAG) method [1…”
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A warm-start FE-dABCD algorithm for elliptic optimal control problems with constraints on the control and the gradient of the state Autor Chen, Zixuan, Song, Xiaoliang, Chen, Xiaotong, Yu, Bo

“…In this paper, elliptic control problems with the integral constraint on the gradient of the state and the box constraint on the control are considered…”
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Nested Conjugate Gradient Algorithm With Nested Preconditioning for Non-Linear Image Restoration Autor Skariah, Deepak G., Arigovindan, Muthuvel

“… The algorithm is constructed as a nesting of two conjugate gradient iterations. The outer iteration is constructed as a preconditioned non-linear CG algorithm…”
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Hyperfast Second-Order Local Solvers for Efficient Statistically Preconditioned Distributed Optimization Autor Dvurechensky, Pavel, Kamzolov, Dmitry, Lukashevich, Aleksandr, Lee, Soomin, Ordentlich, Erik, Uribe, César A, Gasnikov, Alexander

“…) smaller-scale optimization problem. The recently proposed Statistically Preconditioned Accelerated Gradient (SPAG…”
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Efficient Model-Based Reconstruction for Dynamic MRI Autor Lin, Claire Yilin

“… The reconstruction model expressed as a large-scale inverse problem requires optimization algorithms to solve, and we consider efficient implementations that make use of underlying problem…”
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Numerical Solutions of Kohn–Sham Density Functional Theory Autor Kuang, Yang

“… by the commonly used locally optimal block preconditioned conjugate gradient method (LOBPCG). The self-consistent field iteration method sometimes suffers from divergence…”
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