Results 31 to 40 of about 38,694 (221)

Augmented Lagrangian Functions for Cone Constrained Optimization: the Existence of Global Saddle Points and Exact Penalty Property

open access: yes, 2018
In the article we present a general theory of augmented Lagrangian functions for cone constrained optimization problems that allows one to study almost all known augmented Lagrangians for cone constrained programs within a unified framework. We develop a
Dolgopolik, M. V.
core   +1 more source

Weighted Low-Rank Tensor Representation for Multi-View Subspace Clustering

open access: yesFrontiers in Physics, 2021
Multi-view clustering has been deeply explored since the compatible and complementary information among views can be well captured. Recently, the low-rank tensor representation-based methods have effectively improved the clustering performance by ...
Shuqin Wang   +2 more
doaj   +1 more source

Distributed Optimization of Multi-Beam Directional Communication Networks

open access: yes, 2017
We formulate an optimization problem for maximizing the data rate of a common message transmitted from nodes within an airborne network broadcast to a central station receiver while maintaining a set of intra-network rate demands.
Tsiligkaridis, Theodoros
core   +1 more source

Weak imposition of Signorini boundary conditions on the boundary element method [PDF]

open access: yes, 2020
We derive and analyse a boundary element formulation for boundary conditions involving inequalities. In particular, we focus on Signorini contact conditions.
Burman, Erik   +2 more
core   +1 more source

Image Restoration by Variable Splitting based on Total Variant Regularizer [PDF]

open access: yesJournal of Artificial Intelligence and Data Mining, 2018
The aim of image restoration is to obtain a higher quality desired image from a degraded image. In this strategy, an image inpainting method fills the degraded or lost area of the image by appropriate information.
E. Sahragard, H. Farsi, S. Mohammadzadeh
doaj   +1 more source

A Fast Linearized Alternating Minimization Algorithm for Constrained High-Order Total Variation Regularized Compressive Sensing

open access: yesIEEE Access, 2019
In this paper, we propose a new high-order total variation regularized model with box constraint for image compressive sensing reconstruction. Because of the separable structure of this model, we can easily decompose into three subproblems by splitting ...
Binbin Hao, Jichao Wang, Jianguang Zhu
doaj   +1 more source

Combining Deep Image Prior and Second-Order Generalized Total Variance for Image Inpainting

open access: yesMathematics, 2023
Image inpainting is a crucial task in computer vision that aims to restore missing and occluded parts of damaged images. Deep-learning-based image inpainting methods have gained popularity in recent research.
Shaopei You   +4 more
doaj   +1 more source

Boundary augmented Lagrangian method for the Signorini problem [PDF]

open access: yesApplications of Mathematics, 2016
In this article, the authors consider an augmented Lagrangian method that is based on (i) a boundary variational formulation and (ii) a fixed point method. This boundary augmented Lagrangian method is specifically designed and analyzed for the Signorini problem of the Laplacian.
Zhang, Shougui, Li, Xiaolin
openaire   +1 more source

A Stochastic Composite Augmented Lagrangian Method for Reinforcement Learning

open access: yesSIAM Journal on Optimization, 2023
29 pages, 6 ...
Yongfeng Li   +3 more
openaire   +2 more sources

Challenges and enablers in fluidization technology

open access: yesAIChE Journal, EarlyView.
Abstract Gas–solid fluidized beds provide excellent heat and mass transfer for high‐throughput operations from coating to catalytic conversion and underpin emerging low‐carbon technologies. Yet industrial reliability, scale‐up, and control lag scientific understanding, particularly as finer, stickier, and more variable feedstocks increasingly challenge
J. Ruud van Ommen, Jia Wei Chew
wiley   +1 more source

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