Showing 1 - 10 of 16
We show that the Lévy measure of an associated infinitely divisible random vector in d may charge those quadrants of the space where the coordinates have different signs. We describe further certain families of infinitely divisible random vectors for which association does require the Lévy...
Persistent link: https://www.econbiz.de/10008872844
Jointly [alpha]-stable random variables with index 0 [alpha] 2 have only finite moments of order less than [alpha], but their conditional moments can be higher than [alpha]. We provide conditions for this to happen and use the existence of the conditional moments to study the regression...
Persistent link: https://www.econbiz.de/10008872919
Distributions of sample quantiles of measurable stochastic processes are important for the purpose of rational pricing of "look-back" options. In this paper we compute the exact tail behavior of the sample quantile distribution for a large class of infinitely divisible stochastic processes with...
Persistent link: https://www.econbiz.de/10008873115
We investigate the tail behavior of the distributions of subadditive functionals of the sample paths of infinitely divisible stochastic processes when the Lévy measure of the process has suitably defined exponentially decreasing tails. It is shown that the probability tails of such functionals...
Persistent link: https://www.econbiz.de/10008873624
We study extremes of (generally) skewed stable processes. In particular we find the asymptotic behavior of the distribution function of the order statistics from a (dependent) stable sample. We give necessary conditions for a.s. boundedness of general stable processes. These conditions turn out...
Persistent link: https://www.econbiz.de/10008873841
A null recurrent Markov chain is associated with a stationary mixing S[alpha]S process. The resulting process exhibits such strong dependence that its sample covariance grows at a surprising rate which is slower than one would expect based on the fatness of the marginal distribution tails. An...
Persistent link: https://www.econbiz.de/10008873880
We characterize the linear and harmonizable fractional stable motions as the self-similar stable processes with stationary increments whose left-equivalent (or right-equivalent) stationary processes are moving averages and harmonizable respectively.
Persistent link: https://www.econbiz.de/10008873995
The large deviations of an infinite moving average process with exponentially light tails are very similar to those of an i.i.d. sequence as long as the coefficients decay fast enough. If they do not, the large deviations change dramatically. We study this phenomenon in the context of functional...
Persistent link: https://www.econbiz.de/10008874427
Point processes induced by stationary symmetric [alpha]-stable (S[alpha]S) processes can have diverse behavior. We distinguish two cases, depending on whether the stationary S[alpha]S process is governed by a dissipative or conservative flow. In the case of dissipative flows, the process is a...
Persistent link: https://www.econbiz.de/10008874764
We show that subexponentiality is not sufficient to guarantee that the distribution tail of a sample quantile of an infinitely divisible process is equivalent to the "tail" of the same sample quantile under the corresponding Lévy measure. However, such an equivalence result is shown to hold...
Persistent link: https://www.econbiz.de/10008874990