Results 31 to 40 of about 35,260 (265)

Linear filtering with fractional Brownian motion in the signal and observation processes [PDF]

open access: yes, 1999
Integral equations for the mean-square estimate are obtained for the linear filtering problem, in which the noise generating the signal is a fractional Brownian motion with Hurst index h∈(3/4,1) and the noise in the observation process includes a ...
Anh, Vo Van   +2 more
core   +2 more sources

Convergence to Weighted Fractional Brownian Sheets [PDF]

open access: yes, 2008
We define weighted fractional Brownian sheets, which are a class of Gaussian random fields with four parameters that include fractional Brownian sheets as special cases, and we give some of their properties.
Garzón, Johanna
core   +3 more sources

Generating Diffusions with Fractional Brownian Motion

open access: yesCommunications in Mathematical Physics, 2022
AbstractWe study fast/slow systems driven by a fractional Brownian motion B with Hurst parameter $$H\in (\frac{1}{3}, 1]$$ H ∈ ( 1 3 , 1
Martin Hairer, Xue-Mei Li
openaire   +3 more sources

Asset Pricing Model Based on Fractional Brownian Motion

open access: yesFractal and Fractional, 2022
This paper introduces one unique price motion process with fractional Brownian motion. We introduce the imaginary number into the agent’s subjective probability for the reason of convergence; further, the result similar to Ito Lemma is proved.
Yu Yan, Yiming Wang
doaj   +1 more source

Random walks at random times: Convergence to iterated L\'{e}vy motion, fractional stable motions, and other self-similar processes [PDF]

open access: yes, 2013
For a random walk defined for a doubly infinite sequence of times, we let the time parameter itself be an integer-valued process, and call the orginal process a random walk at random time.
Jung, Paul, Markowsky, Greg
core   +1 more source

重分数布朗运动的列维连续模(Lévy's moduli of continuity of multifractional Brownian motion)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2000
This paper proposed Lévy's moduli of continuity of multifractional Brownian motion,which is a generalization of the fractional Brownian motion.
LINZheng-yan(林正炎)
doaj   +1 more source

On Squared Fractional Brownian Motions [PDF]

open access: yes, 2004
We have proved recently that fractional Brownian motions with Hurst parameter H in (0, 1/2) satisfy a remarkable property: their squares are infinitely divisible. In the Brownian motion case (the case H = 1/2), this property is completely understood thanks to stochastic calculus arguments.
Eisenbaum, N., Tudor, C.A.
openaire   +2 more sources

Ball throwing on spheres [PDF]

open access: yes, 2009
Ball throwing on Euclidean spaces has been considered for a while. A suitable renormalization leads to a fractional Brownian motion as limit object. In this paper we investigate ball throwing on spheres.
Estrade, Anne, Istas, Jacques
core   +7 more sources

Asymptotic Growth of Sample Paths of Tempered Fractional Brownian Motions, with Statistical Applications to Vasicek-Type Models

open access: yesFractal and Fractional
Tempered fractional Brownian motion (TFBM) and tempered fractional Brownian motion of the second kind (TFBMII) modify the power-law kernel in the moving average representation of fractional Brownian motion by introducing exponential tempering.
Yuliya Mishura, Kostiantyn Ralchenko
doaj   +1 more source

A fractional Brownian field indexed by $L^2$ and a varying Hurst parameter [PDF]

open access: yes, 2014
Using structures of Abstract Wiener Spaces, we define a fractional Brownian field indexed by a product space $(0,1/2] \times L^2(T,m)$, $(T,m)$ a separable measure space, where the first coordinate corresponds to the Hurst parameter of fractional ...
Richard, Alexandre
core   +5 more sources

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