Results 1 to 10 of about 63,026 (172)

A logistic-tent chaotic mapping Levenberg Marquardt algorithm for improving positioning accuracy of grinding robot [PDF]

open access: yesScientific Reports
The precision of workpiece machining is critically influenced by the geometric errors in the kinematics of grind robots, which directly affect their absolute positioning accuracy.
Jian Liu   +6 more
doaj   +2 more sources

Levenberg-Marquardt Method for the Eigenvalue Complementarity Problem [PDF]

open access: yesThe Scientific World Journal, 2014
The eigenvalue complementarity problem (EiCP) is a kind of very useful model, which is widely used in the study of many problems in mechanics, engineering, and economics.
Yuan-yuan Chen, Yan Gao
doaj   +2 more sources

Levenberg–Marquardt deep neural watermarking for 3D mesh using nearest centroid salient point learning [PDF]

open access: yesScientific Reports
Watermarking is one of the crucial techniques in the domain of information security, preventing the exploitation of 3D Mesh models in the era of Internet.
Modigari Narendra   +3 more
doaj   +2 more sources

Adaptive Levenberg–Marquardt Algorithm: A New Optimization Strategy for Levenberg–Marquardt Neural Networks

open access: yesMathematics, 2021
Engineering data are often highly nonlinear and contain high-frequency noise, so the Levenberg–Marquardt (LM) algorithm may not converge when a neural network optimized by the algorithm is trained with engineering data.
Zhiqi Yan   +3 more
doaj   +1 more source

A Comparative Performance Analysis of ANN Algorithms for MPPT Energy Harvesting in Solar PV System

open access: yesIEEE Access, 2021
In this paper, artificial neural network (ANN) based Levenberg-Marquardt (LM), Bayesian Regularization (BR) and Scaled Conjugate Gradient (SCG) algorithms are deployed in maximum power point tracking (MPPT) energy harvesting in solar photovoltaic (PV ...
Rajib Baran Roy   +9 more
doaj   +1 more source

A New Modified Levenberg–Marquardt Method for Systems of Nonlinear Equations

open access: yesJournal of Mathematics, 2023
Taking a new choice of the LM parameter λk=μkJkTFkδ with δ∈0,2, we give a new modified Levenberg–Marquardt method. Under the error bound condition c distw,S≤JwTFw which is weaker than the nonsingular of Jacobian Jw, we present that the new Levenberg ...
Liang Chen, Yanfang Ma
doaj   +1 more source

Optimization of SLAM Graph Based on Optimization Levenberg-Marquardt Method

open access: yesJournal of Harbin University of Science and Technology, 2021
Aimed at the present situation of the visualSimultaneous Localization and Mapping technology of complex nonlinear optimization method of process,optimization of slow speed and low accuracy of optimization shortcomings,in the wide application of nonlinear
DAI Tian-hong, LI Zhi-cheng
doaj   +1 more source

MODERN METHODS OF BUNDLE ADJUSTMENT ON THE GPU [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The task to compute 3D reconstructions from large amounts of data has become an active field of research within the last years. Based on an initial estimate provided by structure from motion, bundle adjustment seeks to find a solution that is optimal for
R. Hänsch, I. Drude, O. Hellwich
doaj   +1 more source

Principle and Performance Analysis of the Levenberg–Marquardt Algorithm in WMS Spectral Line Fitting

open access: yesPhotonics, 2022
Calibration-free wavelength modulation spectroscopy (WMS) is an efficient technique for trace gas monitoring. It is widely used due to its resistance to light intensity fluctuations, strong suppression of low-frequency noise, fast response time, and ...
Yongjie Sun   +5 more
doaj   +1 more source

Applicability of Common Algorithms in Species–Area Relationship Model Fitting

open access: yesDiversity, 2022
The species–area relationship (SAR) describes a law of species richness changes as the sampling area varies. SAR has been studied for more than 100 years and is of great significance in the fields of biogeography, population ecology, and conservation ...
Zhidong Liu, Xiaoke Liu, Tsung-Jen Shen
doaj   +1 more source

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