Parameter estimation for alpha-fractional bridges - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2011

Parameter estimation for alpha-fractional bridges

Ivan Nourdin
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Résumé

Let alpha,T>0. We study the asymptotic properties of a least squares estimator for the parameter alpha of a fractional bridge defined as dX_t=-alpha*X_t/(T-t)dt+dB_t, with t in [0,T) and where B is a fractional Brownian motion of Hurst index H>1/2. Depending on the value of alpha, we prove that we may have strong consistency or not as t tends to T. When we have consistency, we obtain the rate of this convergence as well. Also, we compare our results to the (known) case where B is replaced by a standard Brownian motion W.
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Dates et versions

hal-00560815 , version 1 (30-01-2011)
hal-00560815 , version 2 (16-09-2011)
hal-00560815 , version 3 (02-08-2013)

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Citer

Khalifa Es-Sebaiy, Ivan Nourdin. Parameter estimation for alpha-fractional bridges. 2011. ⟨hal-00560815v2⟩
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