Results 1 to 10 of about 1,245 (111)
Vector Fitting for Matrix-valued Rational Approximation [PDF]
SIAM Journal of Scientific Computing, 2015 Vector Fitting (VF) is a popular method of constructing rational approximants that provides a least squares fit to frequency response measurements. In an earlier work, we provided an analysis of VF for scalar-valued rational functions and established a connection with optimal $H_2$ approximation.
Zlatko Drmač +2 more
exaly +5 more sources
Energies, 2022 This paper proposes a rational approximation-based approach to find positive real parameters for the extended Debye model (EDM), aimed at condition assessment of insulation systems of power transformers.
Giovanni Hernandez, Abner Ramirez
doaj +3 more sources
Handling Initial Conditions in Vector Fitting for Real Time Modeling of Power System Dynamics
Energies, 2021 This paper develops a predictive modeling algorithm, denoted as Real-Time Vector Fitting (RTVF), which is capable of approximating the real-time linearized dynamics of multi-input multi-output (MIMO) dynamical systems via rational transfer function ...
Tommaso Bradde +4 more
doaj +3 more sources
Applied Sciences, 2020 Since high voltage transmission line towers or wind turbines structures are installed in high-altitude areas, it is essential to achieve a high overvoltage protection system against direct and indirect lightning strikes collisions.
Maziyar Fakhraei +2 more
doaj +3 more sources
RESEARCH ON GPS HEIGHT FITTING BASED ON ABC OPTIMIZED LSSVM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Aiming at the problem that the fitting parameters of the least squares support vector machine fitting method are difficult to select, a method of introducing the artificial bee colony algorithm into the least squares support vector machine to establish a
Y. Zhang +6 more
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Wave Energy Converter’s Slack and Stiff Connection: Study of Absorbed Power in Irregular Waves
Energies, 2021 Two different concepts of wave energy converter coupled to the novel C-GEN linear generator have been studied numerically, including the evaluation of different buoy sizes.
Tatiana Potapenko +3 more
doaj +1 more source
Fitting a graph to vector data [PDF]
Proceedings of the 26th Annual International Conference on Machine Learning, 2009 We introduce a measure of how well a combinatorial graph fits a collection of vectors. The optimal graphs under this measure may be computed by solving convex quadratic programs and have many interesting properties. For vectors in d dimensional space, the graphs always have average degree at most 2(d + 1), and for vectors in 2 dimensions they are ...
Samuel I. Daitch +2 more
openaire +3 more sources
IEEE Access, 2022 This work presents a transmission line model for simulating electromagnetic transients directly in the time domain. For this purpose, the exact equivalent $\pi $ -circuit is used, which represents the line taking into account its distributed and ...
P. Juan Robles Balestero +2 more
doaj +1 more source
A Novel Method for Constructing VLC Equalizer With Active-Passive Hybrid Network
IEEE Photonics Journal, 2020 In this article, a novel method for constructing a pre-equalizer by optimized filter synthesis with vector fitting is proposed to broaden the bandwidth of a visible light communication (VLC) system.
Chengyu Min +6 more
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Macromodeling High-Speed Circuit Data Using Rational Krylov Fitting Method
Energies, 2021 This paper presents the modeling of high speed distributed networks characterized by S-parameters frequency data using the rational Krylov fitting (RKFIT) algorithm. Numerical examples illustrate the effectiveness of the method to compute stable rational
Mohamed Sahouli, Anestis Dounavis
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