Results 81 to 90 of about 245,277 (249)

An adaptive sampling augmented Lagrangian method for stochastic optimization with deterministic constraints [PDF]

Computers and Mathematics with Applications, 2023
Raghu Bollapragada, Cem Karamanli, Brendan Keith, B. Lazarov, S. Petrides, Jingyi Wang   +5 more
semanticscholar   +1 more source

Multiple Shape Registration using Constrained Optimal Control [PDF]

, 2015
Lagrangian particle formulations of the large deformation diffeomorphic metric mapping algorithm (LDDMM) only allow for the study of a single shape. In this paper, we introduce and discuss both a theoretical and practical setting for the simultaneous ...
Arguillère, Sylvain, Trouvé, Alain, Trélat, Emmanuel, Younes, Laurent   +3 more
core   +2 more sources

Morozov's principle for the augmented Lagrangian method applied to linear inverse problems

, 2010
The Augmented Lagrangian Method as an approach for regularizing inverse problems received much attention recently, e.g. under the name Bregman iteration in imaging.
Frick, Klaus, Lorenz, Dirk A., Resmerita, Elena   +2 more
core   +1 more source

Hybridized augmented Lagrangian methods for contact problems

Computer Methods in Applied Mechanics and Engineering
This paper addresses the problem of friction-free contact between two elastic bodies. We develop an augmented Lagrangian method that provides computational convenience by reformulating the contact problem as a nonlinear variational equality. To achieve this, we propose a Nitsche-based method incorporating a hybrid displacement variable defined on an ...
Erik Burman, Peter Hansbo, Mats G. Larson   +2 more
openaire   +3 more sources

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

An efficient augmented Lagrangian method for support vector machine [PDF]

Optim. Methods Softw., 2019
Support vector machine (SVM) has proved to be a successful approach for machine learning. Two typical SVM models are the L1-loss model for support vector classification (SVC) and ε-L1-loss model for support vector regression (SVR).
Yinqiao Yan, Qingna Li
semanticscholar   +1 more source

Parallel Solution of Linear Programs Via Nash Equilibria [PDF]

, 1994
The linear programming problem is shown to be equivalent to a game in which primal players minimize the augmented Lagrangian function for the primal problem and dual players maximize the augmented Lagrangian function for the dual problem.
Kallio, M.J., Ruszczynski, A.
core  

Variational Poisson denoising via augmented Lagrangian methods

ETNA - Electronic Transactions on Numerical Analysis
In this paper, we denoise a given noisy image by minimizing a smoothness promoting function over a set of local similarity measures which compare the mean of the given image and some candidate image on a large collection of subboxes. The associated convex optimization problem possesses a huge number of constraints which are induced by extended real ...
Kanzow, Christian, Krämer, Fabius, Mehlitz, Patrick, Wachsmuth, Gerd, Werner, Frank   +4 more
openaire   +3 more sources

Machine Learning and Artificial Intelligence Techniques for Intelligent Control and Forecasting in Energy Storage‐Based Power Systems

Energy Science &Engineering, EarlyView.
A new energy paradigm assisted by AI. ABSTRACT The tremendous penetration of renewable energy sources and the integration of power electronics components increase the complexity of the operation and power system control. The advancements in Artificial Intelligence and machine learning have demonstrated proficiency in processing tasks requiring ...
Balasundaram Bharaneedharan, Suresh Panchanathan, Chan Choon Kit, Elumalai Perumal Venkatesan, Nasim Hasan   +4 more
wiley   +1 more source

Next Generation 7 Tesla Arterial Spin Labeling With Rotated Spiral Acquisition Enables Mesoscale Resolution in 3D Brain Perfusion and Functional MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To achieve high resolution (≤ 1 mm isotropic) whole‐brain perfusion imaging at 7 T with next generation ASL pulse sequence, reconstruction algorithm, and MRI hardware. Methods We capitalized on three major innovations: (1) FLASH‐based pseudo‐Continuous ASL (pCASL) sequence with rotated golden‐angle stack‐of‐spirals (rGA‐SoS) sampling; (
Chenyang Zhao, Fanhua Guo, Zidong Yang, Xingfeng Shao, Samantha J. Ma, Alexander J. S. Beckett, An T. Vu, David A. Feinberg, Danny J. J. Wang   +8 more
wiley   +1 more source