Results 1 to 10 of about 2,700 (198)

Kernel Analysis Based on Dirichlet Processes Mixture Models [PDF]

open access: yesEntropy, 2019
Kernels play a crucial role in Gaussian process regression. Analyzing kernels from their spectral domain has attracted extensive attention in recent years. Gaussian mixture models (GMM) are used to model the spectrum of kernels.
Jinkai Tian, Peifeng Yan, Da Huang
doaj   +2 more sources

Kernel based Dirichlet sequences

open access: yesBernoulli, 2023
Let $X=(X_1,X_2,\ldots)$ be a sequence of random variables with values in a standard space $(S,\mathcal{B})$. Suppose \begin{gather*} X_1\simν\quad\text{and}\quad P\bigl(X_{n+1}\in\cdot\mid X_1,\ldots,X_n\bigr)=\frac{θν(\cdot)+\sum_{i=1}^nK(X_i)(\cdot)}{n+θ}\quad\quad\text{a.s.} \end{gather*} where $θ>0$ is a constant, $ν$ a probability measure on $\
Berti Patrizia   +4 more
openaire   +4 more sources

THE DIRICHLET PROBLEM FOR AN ORDINARY DIFFERENTIAL EQUATION OF THE SECOND ORDER WITH THE OPERATOR OF DISTRIBUTED DIFFERENTIATION [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019
In this paper, we study a linear ordinary differential equation of the second order with operator of continuously distributed differentiation, and for him we study the two-point boundary value problem by the Green’s function method. A special function is
B. I. Efendiev
doaj   +1 more source

Infinite memory effects on the stabilization of a biharmonic Schrödinger equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
This paper deals with the stabilization of the linear biharmonic Schrödinger equation in an $n$-dimensional open bounded domain under Dirichlet–Neumann boundary conditions considering three infinite memory terms as damping mechanisms.
Roberto de A. Capistrano-Filho   +2 more
doaj   +1 more source

Asymptotic properties of Dirichlet kernel density estimators

open access: yesJournal of Multivariate Analysis, 2022
25 pages, 3 figures; v4: final ...
Ouimet, F., Tolosana Delgado, R.
openaire   +5 more sources

Laplace Dirichlet heat kernels in convex domains [PDF]

open access: yesJournal of Differential Equations, 2022
We provide general lower and upper bounds for Laplace Dirichlet heat kernel of convex $\mathcal C^{1,1}$ domains. The obtained estimates precisely describe the exponential behaviour of the kernels, which has been known only in a few special cases so far. Furthermore, we characterize a class of sets for which the estimates are sharp, i.e.
openaire   +2 more sources

Some Hilbert spaces related with the Dirichlet space

open access: yesConcrete Operators, 2016
We study the reproducing kernel Hilbert space with kernel kd , where d is a positive integer and k is the reproducing kernel of the analytic Dirichlet space.
Arcozzi Nicola   +4 more
doaj   +1 more source

Differential-Difference Elliptic Equations with Nonlocal Potentials in Half-Spaces

open access: yesMathematics, 2023
We investigate the half-space Dirichlet problem with summable boundary-value functions for an elliptic equation with an arbitrary amount of potentials undergoing translations in arbitrary directions.
Andrey B. Muravnik
doaj   +1 more source

Variational Dirichlet Blur Kernel Estimation

open access: yesIEEE Transactions on Image Processing, 2015
Blind image deconvolution involves two key objectives: 1) latent image and 2) blur estimation. For latent image estimation, we propose a fast deconvolution algorithm, which uses an image prior of nondimensional Gaussianity measure to enforce sparsity and an undetermined boundary condition methodology to reduce boundary artifacts. For blur estimation, a
Xu, Zhou   +4 more
openaire   +2 more sources

N=2 gauge theories on the hemisphere HS4

open access: yesNuclear Physics B, 2017
Using localization techniques, we compute the path integral of N=2 SUSY gauge theory coupled to matter on the hemisphere HS4, with either Dirichlet or Neumann supersymmetric boundary conditions.
Edi Gava   +3 more
doaj   +1 more source

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