Results 21 to 30 of about 62,442 (223)

Model and Simulation of COVID-19 Transmission with Vaccination and Quarantine Interventions in Jember

open access: yesInPrime, 2023
In this study, we model the transmission of COVID-19 by considering vaccination and quarantine interventions. The focus of our study is to measure the effect of these two interventions on controlling the spread of COVID-19.
Faizal Rifky Fahreza   +2 more
doaj   +1 more source

The Levenberg–Marquardt Method for Acousto-Electric Tomography on Different Conductivity Contrast

open access: yesApplied Sciences, 2020
The stability and convergence performance of Levenberg–Marquardt method for acousto-electric tomography (AET) applied to different levels of conductivity contrast is studied in this paper. As a multi-physical imaging modality, acousto-electric tomography
Changyou Li, Kang An, Kuisong Zheng
doaj   +1 more source

Local convergence of the Levenberg-Marquardt method under H\"{o}lder metric subregularity [PDF]

open access: yes, 2019
We describe and analyse Levenberg-Marquardt methods for solving systems of nonlinear equations. More specifically, we propose an adaptive formula for the Levenberg-Marquardt parameter and analyse the local convergence of the method under H\"{o}lder ...
Arag, F.J.   +4 more
core   +4 more sources

Improved prediction accuracy of biomass heating value using proximate analysis with various ANN training algorithms

open access: yesResults in Engineering, 2022
The conventional experimental methods to determine biomass heating value are laborious and costly. Numerous correlations to estimate biomass' higher heating values have been proposed using proximate analysis.
Ibham Veza   +7 more
doaj   +1 more source

Fuzzy Wavelet Neural Network with the Improved Levenberg–Marquardt Algorithm for the AC Servo System

open access: yesComplexity, 2021
In this study, a fuzzy wavelet neural network with the improved Levenberg–Marquardt algorithm (FWNN-LM) is proposed to conquer nonlinearity and uncertain disturbance problems in the AC servo system.
Run-Min Hou   +3 more
doaj   +1 more source

Prediksi Curah Hujan dengan Menggunakan Algoritma Levenberg-Marquardt dan Backpropagation [PDF]

open access: yes, 2016
Salah satu faktor yang mempengaruhi tipe iklim adalah curah hujan. Keakuratan dalam prediksi curah hujan menjadi faktor penting karena dapat digunakan dalam berbagai kepentingan.
Bettiza, M. (Martaleli)   +2 more
core   +2 more sources

Levenberg-Marquardt vs Powell's dogleg method for Gurson-Tvergaard-Needleman plasticity model [PDF]

open access: yes, 2012
The GTN continuous damage model is very popular in academia and industry for structural integrity assessment and ductile fracture simulation. Following Aravas' influential 1987 paper, Newton's method has been used widely to solve the GTN equations ...
Alexander, N. A., Shterenlikht, A.
core   +2 more sources

Hybrid Levenberg–Marquardt and weak-constraint ensemble Kalman smoother method [PDF]

open access: yesNonlinear Processes in Geophysics, 2016
The ensemble Kalman smoother (EnKS) is used as a linear least-squares solver in the Gauss–Newton method for the large nonlinear least-squares system in incremental 4DVAR.
J. Mandel   +4 more
doaj   +1 more source

Acceleration of Levenberg-Marquardt Training of Neural Networks with Variable Decay Rate [PDF]

open access: yes, 2003
In the application of the standard Levenherg-Marquardt training process of neural networks, error oscillations are frequently observed and they usually aggravate on approaching the required accuracy.
Au, FTK, Chen, TC, Han, DJ, Tham, LG
core   +1 more source

The Levenberg-Marquardt-Type Methods for a Kind of Vertical Complementarity Problem

open access: yesJournal of Applied Mathematics, 2011
Two kinds of the Levenberg-Marquardt-type methods for the solution of vertical complementarity problem are introduced. The methods are based on a nonsmooth equation reformulation of the vertical complementarity problem for its solution.
Shou-qiang Du, Yan Gao
doaj   +1 more source

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