Results 11 to 20 of about 881,344 (295)

Asymptotic Normality of Nonparametric Kernel Regression Estimation for Missing at Random Functional Spatial Data

open access: yesJournal of Mathematics, 2023
This study investigates the estimation of the regression function using the kernel method in the presence of missing at random responses, assuming spatial dependence, and complete observation of the functional regressor.
Fatimah Alshahrani   +4 more
doaj   +1 more source

On-Board Random Vibration-Based Robust Detection of Railway Hollow Worn Wheels under Varying Traveling Speeds

open access: yesMachines, 2023
The problem of the prompt detection of early-stage hollow worn wheels in railway vehicles via on-board random vibration measurements under normal operation and varying speeds is investigated.
Nikolaos Kaliorakis   +2 more
doaj   +1 more source

Extreme Value Analysis for Mixture Models with Heavy-Tailed Impurity

open access: yesMathematics, 2021
This paper deals with the extreme value analysis for the triangular arrays which appear when some parameters of the mixture model vary as the number of observations grows.
Ekaterina Morozova, Vladimir Panov
doaj   +1 more source

Stochastic volatility and stochastic leverage [PDF]

open access: yesAnnals of Finance, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Veraart, Almut, Veraart, Luitgard A. M.
openaire   +1 more source

A Theory of Stochastic Harvesting in Stochastic Environments [PDF]

open access: yesThe American Naturalist, 2002
We investigate how model populations respond to stochastic harvesting in a stochastic environment. In particular, we show that the effects of variable harvesting on the variance in population density and yield depend critically on the autocorrelation of environmental noise and on whether the endogenous dynamics of the population display over- or ...
Jonzén, Niclas   +2 more
openaire   +3 more sources

Stochastic Perron for Stochastic Target Problems [PDF]

open access: yesJournal of Optimization Theory and Applications, 2016
In this paper, we adapt stochastic Perron's method to analyze a stochastic target problem with unbounded controls in a jump diffusion set-up. With this method, we construct a viscosity sub-solution and super-solution to the associated Hamiltonian-Jacobi-Bellman (HJB) equations.
Erhan Bayraktar, Jiaqi Li
openaire   +3 more sources

Machine learning through cryptographic glasses: combating adversarial attacks by key-based diversified aggregation

open access: yesEURASIP Journal on Information Security, 2020
In recent years, classification techniques based on deep neural networks (DNN) were widely used in many fields such as computer vision, natural language processing, and self-driving cars. However, the vulnerability of the DNN-based classification systems
Olga Taran   +3 more
doaj   +1 more source

Comparison of three recent discrete stochastic inversion methods and influence of the prior choice

open access: yesComptes Rendus. Géoscience, 2022
Groundwater flow depends on subsurface heterogeneity, which often calls for categorical fields to represent different geological facies. The knowledge about subsurface is however limited and often provided indirectly by state variables, such as hydraulic
Juda, Przemysław   +2 more
doaj   +1 more source

Stochastic Annealing [PDF]

open access: yesPhysical Review Letters, 2003
4 pages, 2 figures, submitting to ...
Ball, Robin   +2 more
openaire   +3 more sources

Stability of hybrid stochastic retarded systems [PDF]

open access: yes, 2008
-In the past few years, hybrid stochastic retarded systems (also known as stochastic retarded systems with Markovian switching), including hybrid stochastic delay systems, have been intensively studied. Among the key results, Mao et al.
Huang, Lirong, Deng, Feiqi, Mao, Xuerong
core   +4 more sources

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