Results 11 to 20 of about 11,113,793 (287)

A Convex Constraint Variational Method for Restoring Blurred Images in the Presence of Alpha-Stable Noises [PDF]

open access: yesSensors, 2018
Blurred image restoration poses a great challenge under the non-Gaussian noise environments in various communication systems. In order to restore images from blur and alpha-stable noise while also preserving their edges, this paper proposes a variational
Zhenzhen Yang, Zhen Yang, Guan Gui
doaj   +2 more sources

A New Iterative Method for Solving General Mixed Variational Inequalities [PDF]

open access: yes, 2008
The general mixed variational inequality containing a nonlinear term φ is a useful and an important generalization of variational inequalities. The projection method cannot be applied to solve this problem due to the presence of the nonlinear term. To
Shi, Chaofeng
core   +6 more sources

A Predictor-Corrector Methods for Mixed Inverse Variational Inequalities [PDF]

open access: yes, 2009
In this paper, a class of mixed inverse variational inequalities is introduced and studied. We prove the existence of the solution of the auxiliary problem for mixed inverse variational inequalities, suggest a predictor-corrector method for solving the ...
Shi, Chaofeng
core   +6 more sources

Variational homotopy perturbation method for solving systems of homogeneous linear and nonlinear partial differential equations

open access: yesDesimal, 2021
The variational homotopy perturbation method is developed by combining variational iteration method and homotopy perturbation method. Variational iteration method has an efficient process in solving a wide variety of equations and systems of equations ...
Atika Faradilla   +3 more
doaj   +1 more source

Variational Estimation Methods for Sturm–Liouville Problems

open access: yesMathematics, 2022
In this paper, we are concerned with approach solutions for Sturm–Liouville problems (SLP) using variational problem (VP) formulation of regular SLP.
Elena Corina Cipu, Cosmin Dănuţ Barbu
doaj   +1 more source

The variational method of moments

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 2023
Abstract The conditional moment problem is a powerful formulation for describing structural causal parameters in terms of observables, a prominent example being instrumental variable regression. We introduce a very general class of estimators called the variational method of moments (VMM), motivated by a variational minimax reformulation
Andrew Bennett, Nathan Kallus
openaire   +2 more sources

A New Variational Inequality with its Application [PDF]

open access: yes, 2009
In this paper, we suggest the iterative algorithm for a variational inequality by using the auxiliary principle technique, which is closely related to the optimal boundary control of time-varying population system with age-dependence and spatial ...
Shi, Chao-Feng
core   +6 more sources

Combined variational iteration method with chebyshev wavelet for the solution of convection-diffusion-reaction problem

open access: yesMehran University Research Journal of Engineering and Technology, 2023
The goal of the work is to solve the nonlinear convection-diffusion-reaction problem using the variational iteration method with the combination of the Chebyshev wavelet.
Muhammad Memon   +2 more
doaj   +1 more source

Exponential type duality for η-approximated variational problems [PDF]

open access: yesYugoslav Journal of Operations Research, 2020
In this article, we use the so-called η-approximation method for solving a new class of nonconvex variational problems with exponential (p, r)-invex functionals.
Jha Shalini, Das Prasun, Antczak Tadeusz
doaj   +1 more source

Variational Bayesian multinomial probit regression with Gaussian process priors [PDF]

open access: yes, 2006
It is well known in the statistics literature that augmenting binary and polychotomous response models with Gaussian latent variables enables exact Bayesian analysis via Gibbs sampling from the parameter posterior.
Rogers, S., Girolami, M.
core   +8 more sources

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