Výsledky vyhledávání - Theory Keywords Exact numerical algorithms

Energy-efficient train control: From local convexity to global optimization and uniqueness Autor Albrecht, Amie R., Howlett, Phil G., Pudney, Peter J., Vu, Xuan

“…®  uses a specialized numerical algorithm to find optimal switching points for each steep section of track…”
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Variational Bayesian Image Restoration With a Product of Spatially Weighted Total Variation Image Priors Autor Chantas, G., Galatsanos, N.P., Molina, R., Katsaggelos, A.K.

“… Numerical experiments are shown which demonstrate that image restoration based on this prior compares favorably with previous state-of-the-art restoration algorithms…”
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Exact Computation of Joint Spectral Characteristics of Linear Operators Autor Guglielmi, Nicola, Protasov, Vladimir

“…We address the problem of the exact computation of two joint spectral characteristics of a family of linear operators, the joint spectral radius (JSR…”
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Query-based association rule mining supporting user perspective Autor Song, Seung-Jae, Kim, Eung-Hee, Kim, Hong-Gee, Kumar, Harshit

“… In this paper, we propose a model and an algorithm to extract association rules, meaningful to a user, with an ad-hoc support and confidence by allowing the user to specify…”
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Algorithms for the Analytical Solution of the Magnetostatics Inverse Problem for the Signal Source of the Dipole Model Autor Primin, M., Nedayvoda, I.

“…Four variants of the algorithms of the analytical solution of the inverse problem of magnetostatics for the dipolar model of field source are proposed…”
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A comparative simulation study of TCP/AQM systems for evaluating the potential of neuron-based AQM schemes Autor Li, Fan, Sun, Jinsheng, Zukerman, Moshe, Liu, Zhengfei, Xu, Qin, Chan, Sammy, Chen, Guanrong, Ko, King-Tim

“… For all schemes, we test their performance in various environments. Through extensive numerical comparisons, we demonstrate that the neuron-based schemes generally achieve faster convergence to queue length target, with smaller queue length jitter…”
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Exact algorithms for two integer-valued problems of searching for the largest subset and longest subsequence Autor Kel’manov, Alexander, Khamidullin, Sergey, Khandeev, Vladimir, Pyatkin, Artem

“…The following two strongly NP-hard problems are considered. In the first problem, we need to find in the given finite set of points in Euclidean space the…”
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Computational Model for Simulation of Lifeboat Free-Fall during Its Launching from Ship in Rough Seas Autor Qiu, Shaoyang, Ren, Hongxiang, Li, Haijiang

“…In order to improve the accuracy of the freefall of lifeboat motion simulation in a ship life-saving simulation training system, a mathematical model using the strip theory…”
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Diffeomorphic 3D Image Registration via Geodesic Shooting Using an Efficient Adjoint Calculation Autor Vialard, François-Xavier, Risser, Laurent, Rueckert, Daniel, Cotter, Colin J.

“…In the context of large deformations by diffeomorphisms , we propose a new diffeomorphic registration algorithm for 3D images that performs the optimization directly on the set of geodesic flows…”
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Joint power control and spectrum access in cognitive radio networks Autor Song, Qingyang, Ning, Zhaolong, Huang, Yang, Guo, Lei, Lu, Xiaobing

“…Cognitive Radio (CR) is proposed to overcome the problem of spectrum underutilization and congestion caused by the increasing demand of wireless services and…”
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A Tutorial on MM Algorithms Autor Hunter, David R, Lange, Kenneth

“… EM algorithms are among the most effective algorithms for maximum likelihood estimation because they consistently drive the likelihood uphill by maximizing a simple surrogate function for the log-likelihood…”
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Deformable Model Fitting by Regularized Landmark Mean-Shift Autor Saragih, Jason M., Lucey, Simon, Cohn, Jeffrey F.

“…Deformable model fitting has been actively pursued in the computer vision community for over a decade. As a result, numerous approaches have been proposed with…”
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Operator Splittings, Bregman Methods and Frame Shrinkage in Image Processing Autor Setzer, Simon

“…We examine the underlying structure of popular algorithms for variational methods used in image processing…”
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Completely Convex Formulation of the Chan-Vese Image Segmentation Model Autor Brown, Ethan S., Chan, Tony F., Bresson, Xavier

“…The active contours without edges model of Chan and Vese (IEEE Transactions on Image Processing 10(2):266–277, 2001 ) is a popular method for computing the…”
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Sparse Occlusion Detection with Optical Flow Autor Ayvaci, Alper, Raptis, Michalis, Soatto, Stefano

“… as a variational optimization problem, and its solution approximated using convex minimization. We describe efficient numerical schemes that reach the global optimum…”
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Self-Calibration Under the Cayley Framework Autor Wu, F. C., Zhang, M., Hu, Z. Y.

“…), its main advantage lies in its numerical stability. In this work, the stratified self-calibration under the Cayley framework is investigated…”
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Global Minimization for Continuous Multiphase Partitioning Problems Using a Dual Approach Autor Bae, Egil, Yuan, Jing, Tai, Xue-Cheng

“… By analyzing the dual formulation, sufficient conditions are derived which show that the relaxation is often exact, i.e…”
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A Reparameterisation Based Approach to Geodesic Constrained Solvers for Curve Matching Autor Cotter, Colin J., Clark, Allan, Peiró, Joaquim

“…We present a numerical algorithm for a new matching approach for parameterisation independent diffeomorphic registration of curves in the plane, targeted at robust registration between curves…”
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Worst-case global optimization of black-box functions through Kriging and relaxation Autor Marzat, Julien, Walter, Eric, Piet-Lahanier, Hélène

“…A new algorithm is proposed to deal with the worst-case optimization of black-box functions evaluated through costly computer simulations…”
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A Simple Approach to Regulate a PVTOL System Using Matching Conditions Autor Aguilar-Ibanez, Carlos, Suarez-Castanon, Miguel S., Meda-Campaña, Jesus, Gutierrez-Frias, Octavio, Merlo-Zapata, Carlos, Martinez-Castro, Jesus A.

“… The non-measurable system velocities are recovered using a suitable exact differentiator observer, achieved through super-twisting based observer…”
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