Results 31 to 40 of about 59,611 (293)

Cavitation Diagnostics Based on Self-Tuning VMD for Fluid Machinery with Low-SNR Conditions

Chinese Journal of Mechanical Engineering, 2023
Variational mode decomposition (VMD) is a suitable tool for processing cavitation-induced vibration signals and is greatly affected by two parameters: the decomposed number K and penalty factor α under strong noise interference. To solve this issue, this
Hao Liu, Zheming Tong, Bingyang Shang, Shuiguang Tong   +3 more
doaj   +1 more source

Estimation of penalty parameters for symmetric interior penalty Galerkin methods

Journal of Computational and Applied Mathematics, 2007
The numerical approximation of a linear elliptic problem by the discontinuous Galerkin method is considered. Computable lower bounds for the penalty parameters are presented.
Epshteyn, Yekaterina, Rivière, Béatrice   +1 more
openaire   +2 more sources

An Automatic Pixel-Wise Multi-Penalty Approach to Image Restoration

Journal of Imaging, 2023
This work tackles the problem of image restoration, a crucial task in many fields of applied sciences, focusing on removing degradation caused by blur and noise during the acquisition process.
Villiam Bortolotti, Germana Landi, Fabiana Zama   +2 more
doaj   +1 more source

Local parameter selection in the $C^0$ interior penalty method for the biharmonic equation [PDF]

, 2023
The symmetric $C^0$ interior penalty method is one of the most popular discontinuous Galerkin methods for the biharmonic equation. This paper introduces an automatic local selection of the involved stability parameter in terms of the geometry of the ...
Streitberger, Julian, Bringmann, Philipp, Carstensen, Carsten   +2 more
core   +2 more sources

Improving the Robustness of Variable Selection and Predictive Performance of Regularized Generalized Linear Models and Cox Proportional Hazard Models

Mathematics, 2023
High-dimensional data applications often entail the use of various statistical and machine-learning algorithms to identify an optimal signature based on biomarkers and other patient characteristics that predicts the desired clinical outcome in biomedical
Feng Hong, Lu Tian, Viswanath Devanarayan   +2 more
doaj   +1 more source

Stable Discontinuous Galerkin FEM Without Penalty Parameters [PDF]

, 2016
We propose a modified local discontinuous Galerkin (LDG) method for second--order elliptic problems that does not require extrinsic penalization to ensure stability. Stability is instead achieved by showing a discrete Poincaré--Friedrichs inequality for the discrete gradient that employs a lifting of the jumps with one polynomial degree higher than the
Lorenz John, Michael Neilan, Iain Smears
openaire   +3 more sources

Constrained and regularized system identification [PDF]

Modeling, Identification and Control, 1998
Prior knowledge can be introduced into system identification problems in terms of constraints on the parameter space, or regularizing penalty functions in a prediction error criterion.
Tor A. Johansen
doaj   +1 more source

Adaptive ADMM with Spectral Penalty Parameter Selection

CoRR, 2016
AISTATS ...
Zheng Xu 0002, Mário A. T. Figueiredo, Tom Goldstein   +2 more
openaire   +3 more sources

Decentralized Accelerated Gradient Methods With Increasing Penalty Parameters

IEEE Transactions on Signal Processing, 2020
The previous name of this paper was "A Sharp Convergence Rate Analysis for Distributed Accelerated Gradient Methods".
Huan Li, Cong Fang, Wotao Yin, Zhouchen Lin   +3 more
openaire   +2 more sources

A Dynamic Parameter Tuning Strategy for Decomposition-Based Multi-Objective Evolutionary Algorithms

Applied Sciences
The penalty-based boundary cross-aggregation (PBI) method is a common decomposition method of the MOEA/D algorithm, but the strategy of using a fixed penalty parameter in the boundary cross-aggregation function affects the convergence of the populations ...
Jie Zheng, Jiaxu Ning, Hongfeng Ma, Ziyi Liu   +3 more
doaj   +1 more source