Results 91 to 100 of about 54,415 (225)
Applied Sciences, 2018 The goal of phase retrieval is to recover an unknown signal from the random measurements consisting of the magnitude of its Fourier transform. Due to the loss of the phase information, phase retrieval is considered as an ill-posed problem.
Zhuolei Xiao +4 more
doaj +1 more source
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT This study introduces a data‐driven surrogate modelling framework that combines an artificial neural network (ANN) with particle swarm optimisation (PSO) and a genetic algorithm (GA) to optimise methanol production under uncertain conditions.
Muhammad Zulkefal +4 more
wiley +1 more source
A Monte-Carlo-Based Network Method for Source Positioning in Bioluminescence Tomography
International Journal of Biomedical Imaging, 2007 We present an approach based on the improved Levenberg Marquardt (LM) algorithm of backpropagation (BP) neural network to estimate the light source ...
Zhun Xu +3 more
doaj +1 more source
Adaptive hybrid optimization strategy for calibration and parameter estimation of physical models
, 2011 A new adaptive hybrid optimization strategy, entitled squads, is proposed for complex inverse analysis of computationally intensive physical models. The new strategy is designed to be computationally efficient and robust in identification of the global ...
Atmadji +35 more
core +1 more source
Computer Graphics Forum, EarlyView.Abstract Typography is an essential component of visual communication. Editing and animating text appearance for graphic designs, title sequences, commercials, and logos remain highly skilled tasks requiring detailed, hands‐on efforts from pro artists. Automating these challenging manual workflows requires balancing the competing goals of maintaining a
Kinjal Parikh +3 more
wiley +1 more source
The geometry of nonlinear least squares with applications to sloppy models and optimization
, 2010 Parameter estimation by nonlinear least squares minimization is a common problem with an elegant geometric interpretation: the possible parameter values of a model induce a manifold in the space of data predictions.
A. Bakushinskii +29 more
core +1 more source
An accelerated Levenberg-Marquardt algorithm for feedforward network
Journal of the Korean Data and Information Science Society, 2012 Abstract This paper proposes a new Levenberg-Marquardt algorithm that is accelerated byadjusting a Jacobian matrix and a quasi-Hessian matrix. The proposed method parti-tions the Jacobian matrix into block matrices and employs the inverse of a partitionedmatrix to nd the inverse of the quasi-Hessian matrix.
openaire +2 more sources
CO2‐sensitive K+ channel traffic affects stomata and whole‐plant water use
Journal of Integrative Plant Biology, EarlyView.CO2‐responsive regulation of membrane trafficking influences the density of the potassium ion (K+) channel KAT1 at the plasma membrane. CO2‐sensitive traffic, dependent on trafficking by the SNARE SYP121, impacts stomatal gas exchange and plant growth.
Zhiyi Yu +4 more
wiley +1 more source
Mathematical model estimation and prediction application of Covid-19 infection in Indonesia using Levenberg-Marquardt Algorithm based on Python. [PDF]
Procedia Comput Sci, 2023 Aryatama FY, Kurniadi FI, Manik NI.
europepmc +1 more source
A geophysical investigation of the Roter Kamm impact crater, Namibia
Meteoritics &Planetary Science, EarlyView.Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus +6 more
wiley +1 more source