Results 21 to 30 of about 243,457 (312)

On the uniqueness of ARCH processes

open access: yesLietuvos Matematikos Rinkinys, 2007
In this note we prove the uniqueness of the solution to ARCH equations under conditions, which are weaker than in some earlier results.
Vytautas Kazakevičius   +1 more
doaj   +1 more source

CHARACTERISTICS OF AN ALGORITM FOR NON-STATIONARY POISSON PROCESS ESTIMATION [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2012
The properties of the algorithm estimates of parameter of harmonic intensity for nonstationary Poisson process. The computational stability of the algorithm is proved.
G.M. Vodinchar
doaj   +1 more source

General support vector representation machine for one-class classification of non-stationary classes [PDF]

open access: yes, 2008
Novelty detection, also referred to as one-class classification, is the process of detecting 'abnormal' behavior in a system by learning the 'normal' behavior.
Fatih Camci   +3 more
core   +1 more source

A Note on Estimation for the First Order Autoregressive Process [PDF]

open access: yesThe Egyptian Statistical Journal, 1987
The asymptotic estimation of the parameters of the first order stationary autoregressive process with zero mean is investigated. The exact and the asymptotic Bayes esti- mates of the weight and the error variance parameters are derived for different ...
A.M. Abouammoh, A.A. Abd-Alla
doaj   +1 more source

Road pavement longitudinal evenness quantification as stationary stochastic process

open access: yesTransport, 2019
One of the requirements concerning pavement quality is the evenness of its surface. Pavement unevenness has a random character and has an adverse influence to rolling resistance, tyre–pavement coherence, safety and the driving comfort.
Bohuš Leitner   +2 more
doaj   +1 more source

Simulation of non-stationary event flow with a nested stationary component

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2020
A method for constructing an ensemble of time series trajectories with a nonstationary flow of events and a non-stationary empirical distribution of the values of the observed random variable is described.
Ruslan V. Pleshakov
doaj   +1 more source

Experimental determinations of the aerodynamic drag for vehicles subjected to the ground effect [PDF]

open access: yesINCAS Bulletin, 2012
A moving vehicle creates a flow of the surrounding air, continuous and compressible fluid. When the movement is at a constant speed, the air flow is not time dependent and the flow distribution lines are constant.
Bogdan TARUS, Ioan SEBESAN
doaj   +1 more source

Stationarity of spot freight rates considering supply/demand effect

open access: yesJournal of Shipping and Trade, 2020
The mean-reverting nature of freight rates is one of the important subjects in maritime economics. The classic understanding of maritime economics (and that of the shipping industry) suggests that freight rate processes are mean-reverting and approach ...
Koichiro Hayashi
doaj   +1 more source

Simple Rules of a Discrete Stochastic Process Leading to Catalan-like Recurrences

open access: yesAlgorithms
A method for obtaining integer sequences is presented by defining simple rules for the evolution of a discrete dynamical system. This paper demonstrates that various Catalan-like recurrences of known integer sequences can be obtained from a single ...
Mariusz Białecki
doaj   +1 more source

Stationary measures and hydrodynamics of zero range processes with several species of particles [PDF]

open access: yes, 2003
We study general zero range processes with different types of particles on a ddimensional lattice with periodic boundary conditions. A necessary and sufficient condition on the jump rates for the existence of stationary product measures is established.
Grosskinsky, Stefan, Spohn, Herbert
core   +1 more source

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