Results 21 to 30 of about 6,755,457 (299)

Optimal Sparse Control Formulation for Reconstruction of Noise-Affected Images

open access: yesAxioms, 2023
We discuss the optimal control formulation for enhancement and denoising of satellite multiband images and propose to take it in the form of an L1 control problem for a quasi-linear parabolic equation with a nonlocal p[u] Laplacian and with a cost ...
Peter Kogut, Yaroslav Kohut
doaj   +1 more source

A new iteration method for solving space fractional coupled nonlinear Schrödinger equations [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2022
A linearly implicit difference scheme for the space fractional coupled nonlinear Schrödinger equation is proposed. The resulting coefficient matrix of the discretized linear system consists of the sum of a complex scaled identity and a symmetric positive ...
H. Aslani   +2 more
doaj   +1 more source

Application neural network approach for the estimation of heavy metal concentrations in the Inaouen watershed

open access: yesJournal of Environmental Engineering and Landscape Management, 2022
This paper describes how the multilayer perceptron neural network (MLPNN) trained by the Broyden-Fletcher-Goldfarb-Shanno (BFGS) quasi-newton back-propagation approach was used to estimate heavy metal concentrations: Aluminum (Al), Lead (Pb), Copper (Cu)
Rachid El Chaal   +1 more
doaj   +1 more source

MathOptInterface: A Data Structure for Mathematical Optimization Problems [PDF]

open access: yesINFORMS journal on computing, 2020
We introduce MathOptInterface, an abstract data structure for representing mathematical optimization problems based on combining pre-defined functions and sets.
B. Legat   +3 more
semanticscholar   +1 more source

Parametric Estimation of Diffusion Processes: A Review and Comparative Study

open access: yesMathematics, 2021
This paper provides an in-depth review about parametric estimation methods for stationary stochastic differential equations (SDEs) driven by Wiener noise with discrete time observations.
Alejandra López-Pérez   +2 more
doaj   +1 more source

Dynamic Shortest Paths Methods for the Time-Dependent TSP

open access: yesAlgorithms, 2021
The time-dependent traveling salesman problem (TDTSP) asks for a shortest Hamiltonian tour in a directed graph where (asymmetric) arc-costs depend on the time the arc is entered.
Christoph Hansknecht   +2 more
doaj   +1 more source

A Bio-Inspired Method for Mathematical Optimization Inspired by Arachnida Salticidade

open access: yesMathematics, 2021
This paper proposes a new meta-heuristic called Jumping Spider Optimization Algorithm (JSOA), inspired by Arachnida Salticidae hunting habits. The proposed algorithm mimics the behavior of spiders in nature and mathematically models its hunting ...
H. Peraza-Vázquez   +5 more
semanticscholar   +1 more source

Experimental Analysis of Algebraic Modelling Languages for Mathematical Optimization

open access: yesInformatica, 2021
In this work, we perform an extensive theoretical and experimental analysis of the characteristics of five of the most prominent algebraic modelling languages (AMPL, AIMMS, GAMS, JuMP, and Pyomo) and modelling systems supporting them.
Vaidas Jusevičius   +2 more
semanticscholar   +1 more source

Dynamical Analysis for the Hybrid Network Model of Delayed Predator-Prey Gompertz Systems with Impulsive Diffusion between Two Patches

open access: yesDiscrete Dynamics in Nature and Society, 2020
In this paper, we consider a hybrid network model of delayed predator-prey Gompertz systems with impulsive diffusion between two patches, in which the patches represent nodes of the network such that the prey population interacts locally in each patch ...
Li Xiang   +4 more
doaj   +1 more source

Optimized and Personalized Phlebotomy Schedules for Patients Suffering From Polycythemia Vera

open access: yesFrontiers in Physiology, 2020
Polycythemia vera (PV) is a slow-growing type of blood cancer, where the production of red blood cells (RBCs) increase considerably. The principal treatment for targeting the symptoms of PV is bloodletting (phlebotomy) at regular intervals based on data ...
Patrick Lilienthal   +4 more
doaj   +1 more source

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