Results 11 to 20 of about 333,021 (254)

Constrained curve fitting [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2002
Lattice2001(plenary); plenary talk given by G.P. Lepage at Lattice 2001 (Berlin); 9 pages, 5 figures (postscript specials)
Lepage, G.P.   +6 more
openaire   +4 more sources

Fitting Method of Optimal Energy-Running Time Curve Based on Train Operation Data of an Urban Rail Section

open access: yesJournal of Advanced Transportation, 2021
Due to the complexity of the operation control of urban rail transit and diversity requirements for section running time standards, based on actual train operation data, this paper proposes a curve fitting method to find the interrelation between running
Lianbo Deng   +3 more
doaj   +1 more source

Models for COVID-19 Daily Confirmed Cases in Different Countries

open access: yesMathematics, 2021
In this paper, daily confirmed cases of COVID-19 in different countries are modelled using different mathematical regression models. The curve fitting is used as a prediction tool for modeling both past and upcoming coronavirus waves.
Hamdy M. Ahmed   +3 more
doaj   +1 more source

Functional Curve Fitting Algorithm via Multi-Heterogeneous Data Curve

open access: yesIEEE Access, 2017
Complex computing based on multi-heterogeneous parameters can utilize the Lebesgue measure to measure their linear and non-linear relations in infinite dimensional Hilbert space, which can characterize those different dimensional characteristics in a set
Laixin Shen   +3 more
doaj   +1 more source

The Mittag-Leffler Fitting of the Phillips Curve

open access: yesMathematics, 2019
In this paper, a mathematical model based on the one-parameter Mittag-Leffler function is proposed to be used for the first time to describe the relation between the unemployment rate and the inflation rate, also known as the Phillips curve. The Phillips
Tomas Skovranek
doaj   +1 more source

Neural-Network-Based Curve Fitting Using Totally Positive Rational Bases

open access: yesMathematics, 2020
This paper proposes a method for learning the process of curve fitting through a general class of totally positive rational bases. The approximation is achieved by finding suitable weights and control points to fit the given set of data points using a ...
Rocio Gonzalez-Diaz   +3 more
doaj   +1 more source

Spectral curve fitting of dielectric constants

open access: yesAIP Advances, 2017
Optical constants are important properties governing the response of a material to incident light. It follows that they are often extracted from spectra measured by absorbance, transmittance or reflectance.
M. Ruzi, C. Ennis, E. G. Robertson
doaj   +1 more source

Sicegar: R package for sigmoidal and double-sigmoidal curve fitting [PDF]

open access: yesPeerJ, 2018
Sigmoidal and double-sigmoidal dynamics are commonly observed in many areas of biology. Here we present sicegar, an R package for the automated fitting and classification of sigmoidal and double-sigmoidal data.
M. Umut Caglar   +2 more
doaj   +2 more sources

Equivariant adjusted least squares estimator in two-line fitting model

open access: yesModern Stochastics: Theory and Applications, 2016
We consider the two-line fitting problem. True points lie on two straight lines and are observed with Gaussian perturbations. For each observed point, it is not known on which line the corresponding true point lies.
Sergiy Shklyar
doaj   +1 more source

Is the Best Fitting Curve Always Unique?

open access: yesJournal of Mathematics, 2013
Fitting straight lines and simple curved objects (circles, ellipses, etc.) to observed data points is a basic task in computer vision and modern statistics (errors-in-variables regression). We have investigated the problem of existence of the best fit in
N. Chernov, Q. Huang, H. Ma
doaj   +1 more source

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