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
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]
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
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
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]
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]
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]
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]
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
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

