Results 41 to 50 of about 12,807,756 (320)

Bispectrum Supersample Covariance

open access: yes, 2018
Modes with wavelengths larger than the survey window can have significant impact on the covariance within the survey window. The supersample covariance has been recognized as an important source of covariance for the power spectrum on small scales, and ...
Chan, Kwan Chuen   +2 more
core   +1 more source

Selecting the derivative of a functional covariate in scalar-on-function regression

open access: yesStatistics and Computing, 2022
This paper presents tests to formally choose between regression models using different derivatives of a functional covariate in scalar-on-function regression. We demonstrate that for linear regression, models using different derivatives can be nested within a model that includes point-impact effects at the end-points of the observed functions ...
Giles Hooker, Han Lin Shang
openaire   +2 more sources

The application of photogrammetric numerical methods to the analysis of eye lens digital images

open access: yesGeodesy and Cartography, 2012
Research on the identification possibilities and accuracy of eye lens digital images applying the theory of photogrammetric numerical methods and of covariations functions is presented.
Jonas Skeivalas   +3 more
doaj   +1 more source

Goodness-of-Fit Tests for Symmetric Stable Distributions -- Empirical Characteristic Function Approach

open access: yes, 2005
We consider goodness-of-fit tests of symmetric stable distributions based on weighted integrals of the squared distance between the empirical characteristic function of the standardized data and the characteristic function of the standard symmetric ...
Akimichi Takemura   +23 more
core   +2 more sources

On the Covariance between Functions

open access: yesJournal of Multivariate Analysis, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Conformal covariant correlation functions

open access: yesNuclear Physics B, 1972
The general constraints of “full conformal symmetry”, on n-point correlation functions are discussed. An identity for the three-point correlation function is derived from conformal symmetry, which allows to derive an integral representation for any “irreducible” conformal graph.
S.FERRARA, G.PARISI
openaire   +1 more source

The application of photogrammetric numerical methods to the analysis of magnetic resonance images

open access: yesGeodesy and Cartography, 2012
Research on the identification possibilities and accuracy of digital images applying the theory of covariations functions is presented. The digital magnetic resonance images are processed by Matlab 7 computer program. The digital magnetic resonance image
Jonas Skeivalas, Romualdas Kizlaitis
doaj   +1 more source

A finite-difference method for linearization in nonlinear estimation algorithms [PDF]

open access: yesModeling, Identification and Control, 1998
Linearizations of nonlinear functions that are based on Jacobian matrices often cannot be applied in practical applications of nonlinear estimation techniques. An alternative linearization method is presented in this paper.
Tor S. Schei
doaj   +1 more source

A New Approach for Nonlinear Transformation of Means and Covariances in Direct Statistical Analysis of Nonlinear Systems

open access: yesIEEE Access, 2021
Covariance analysis describing function technique is a conventional method to solve the performance analysis of the nonlinear missile guidance system. Aiming at the faultiness of covariance analysis describing function technique and its improved method ...
Quancheng Li   +4 more
doaj   +1 more source

Introducing Plithogenic Stochastic Processes with an Application to Poisson Process [PDF]

open access: yesNeutrosophic Sets and Systems
In this paper, we study and define the mathematical form of plithogenic stochastic processes PSP based on set of three classic stochastic processes. This new definition is a generalization of neutrosophic stochastic process.
Abdulrahman Astambli   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy