Results 21 to 30 of about 15,808 (165)

Representations and classifications of stochastic processes [PDF]

open access: yesTransactions of the American Mathematical Society, 1974
We show that to every stochastic process X one can associate a unique collection ( Φ
openaire   +1 more source

Laplacian Autoencoders for Learning Stochastic Representations [PDF]

open access: yesAdvances in Neural Information Processing Systems 35, 2022
Established methods for unsupervised representation learning such as variational autoencoders produce none or poorly calibrated uncertainty estimates making it difficult to evaluate if learned representations are stable and reliable. In this work, we present a Bayesian autoencoder for unsupervised representation learning, which is trained using a novel
Miani, Marco   +4 more
openaire   +3 more sources

Representations of mild solutions of time-varying linear stochastic equations and the exponential stability of periodic systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2004
The main object of this paper is to give a representation of the covariance operator associated to the mild solutions of time-varying,linear, stochastic equations in Hilbert spaces.
V. M. Ungureanu
doaj   +1 more source

Nash Equilibrium of Stochastic Partial Differential Game with Partial Information via Malliavin Calculus

open access: yesComplexity, 2023
In this article, we consider the Nash equilibrium of stochastic differential game where the state process is governed by a controlled stochastic partial differential equation and the information available to the controllers is possibly less than the ...
Gaofeng Zong
doaj   +1 more source

A Study of The Stochastic Burgers’ Equation Using The Dynamical Orthogonal Method

open access: yesAxioms, 2023
In the current work, the stochastic Burgers’ equation is studied using the Dynamically Orthogonal (DO) method. The DO presents a low-dimensional representation for the stochastic fields. Unlike many other methods, it has a time-dependent property on both
Mohamed El-Beltagy   +2 more
doaj   +1 more source

A stochastic model for natural feature representation [PDF]

open access: yes, 2005
This paper presents a robust stochastic model for the incorporation of natural features within data fusion algorithms. The representation combines Isomap, a non-linear manifold learning algorithm, with Expectation Maximization, a statistical learning ...
Sakkarieh, S.   +13 more
core   +1 more source

Aumann Type Set-valued Lebesgue Integral and Representation Theorem [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2009
n this paper, we shall firstly illustrate why we should discuss the Aumann type set-valued Lebesgue integral of a set-valued stochastic process with respect to time t under the condition that the set-valued stochastic process takes nonempty compact ...
Jungang Li, Shoumei Li
doaj   +1 more source

A class of stochastic Gronwall’s inequality and its application

open access: yesJournal of Inequalities and Applications, 2018
This paper puts forward the basic form of stochastic Gronwall’s inequality and uses, respectively, the iterative method, the integral method and the martingale representation method to prove it.
Xin Wang, Shengjun Fan
doaj   +1 more source

Modelling the operation of multireservoir systems using decomposition and stochastic dynamic programming [PDF]

open access: yes, 2006
Stochastic dynamic programming models are attractive for multireservoir control problems because they allow non-linear features to be incorporated and changes in hydrological conditions to be modeled as Markov processes.
Archibald, Thomas W.; id_orcid   +5 more
core   +1 more source

A stochastic representation of the local structure of turbulence [PDF]

open access: yesEPL (Europhysics Letters), 2010
Based on the mechanics of the Euler equation at short time, we show that a Recent Fluid Deformation (RFD) closure for the vorticity field, neglecting the early stage of advection of fluid particles, allows to build a 3D incompressible velocity field that shares many properties with empirical turbulence, such as the teardrop shape of the R-Q plane ...
Chevillard, Laurent   +2 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy