Results 31 to 40 of about 5,452,386 (223)

Optimization of LMBP high-speed railway wheel size prediction algorithm based on improved adaptive differential evolution algorithm

open access: yesInternational Journal of Distributed Sensor Networks, 2019
It is beneficial for maintenance department to make maintenance strategy and reduce maintenance cost to forecast the hidden danger index value. Based on the analysis of the research status of wheel-to-life prediction at home and abroad and the repair of ...
Yu Zhang   +3 more
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

Fitting sediment rating curves using regression analysis: a case study of Russian Arctic rivers [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
Published suspended sediment data for Arctic rivers is scarce. Suspended sediment rating curves for three medium to large rivers of the Russian Arctic were obtained using various curve-fitting techniques.
N. I. Tananaev
doaj   +1 more source

Linear complementarity problems on extended second order cones [PDF]

open access: yes, 2018
In this paper, we study the linear complementarity problems on extended second order cones. We convert a linear complementarity problem on an extended second order cone into a mixed complementarity problem on the non-negative orthant.
Németh, S. Z., Xiao, L.
core   +2 more sources

Mechanical properties of the concrete containing porcelain waste as sand [PDF]

open access: yes, 2018
The demand of concrete have been increases on a daily bases which consume a lot of natural resource such as sand and gravel, there is an immediate need for finding suitable alternative which can be used to replace sand partially with another materials ...
Al-juboor, Shihab   +4 more
core   +1 more source

On damping parameters of Levenberg-Marquardt algorithm for nonlinear least square problems

open access: yes, 2021
The Levenberg-Marquardt (LM) algorithm is a widely used method for solving problems related to nonlinear least squares. The method depends on a nonlinear parameter μ known as self-scaling parameter that affects the performance of the algorithm.
A. Umar   +4 more
semanticscholar   +1 more source

Research of TDOA Direction Finding Algorithm Based on Levenberg-Marquardt [PDF]

open access: yesJisuanji gongcheng, 2018
A direction finding algorithm based on Levenberg-Marquardt(LM) is proposed to reduce the interference of Time Difference of Arrival(TDOA) measurement noise on lateral accuracy and avoid the phenomenon that algorithm results are not convergent.The closed ...
HOU Dongsheng,CUI Xunxue
doaj   +1 more source

Performance Evaluation of Bundle Adjustment with Population Based Optimization Algorithms Applied to Panoramic Image Stitching

open access: yesSensors, 2021
The image stitching process is based on the alignment and composition of multiple images that represent parts of a 3D scene. The automatic construction of panoramas from multiple digital images is a technique of great importance, finding applications in ...
Maria Júlia R. Aguiar   +4 more
doaj   +1 more source

New method for wind potential prediction using recurrent artificial neural networks [PDF]

open access: yesE3S Web of Conferences, 2021
The aim of the study is to find the right architecture of the NARX neural network, in order to perform the daily prediction of the maximum wind speed of Laayoune city. We relied on the Levenberg-Marquardt optimization algorithm.
Amellas Yousra   +4 more
doaj   +1 more source

Direct 3D Tomographic Reconstruction and Phase-Retrieval of Far-Field Coherent Diffraction Patterns [PDF]

open access: yes, 2019
We present an alternative numerical reconstruction algorithm for direct tomographic reconstruction of a sample refractive indices from the measured intensities of its far-field coherent diffraction patterns.
Andersen, Martin Skovgaard   +3 more
core   +2 more sources

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