Results 1 to 10 of about 244 (56)

The deFinetti representation of generalised Marshall–Olkin sequences

open access: yesDependence Modeling, 2020
We show that each infinite exchangeable sequence τ1, τ2, . . . of random variables of the generalised Marshall–Olkin kind can be uniquely linked to an additive subordinator via its deFinetti representation. This is useful for simulation, model estimation,
Sloot Henrik
doaj   +2 more sources

On partially Schur-constant models and their associated copulas

open access: yesDependence Modeling, 2021
Schur-constant vectors are used to model duration phenomena in various areas of economics and statistics. They form a particular class of exchangeable vectors and, as such, rely on a strong property of symmetry.
Lefèvre Claude
doaj   +1 more source

Implementing Markovian models for extendible Marshall–Olkin distributions

open access: yesDependence Modeling, 2022
We derive a novel stochastic representation of exchangeable Marshall–Olkin distributions based on their death-counting processes. We show that these processes are Markov.
Sloot Henrik
doaj   +1 more source

Relations between ageing and dependence for exchangeable lifetimes with an extension for the IFRA/DFRA property

open access: yesDependence Modeling, 2020
We first review an approach that had been developed in the past years to introduce concepts of “bivariate ageing” for exchangeable lifetimes and to analyze mutual relations among stochastic dependence, univariate ageing, and bivariate ageing.
Nappo Giovanna, Spizzichino Fabio
doaj   +1 more source

A note on Boolean stochastic processes [PDF]

open access: yes, 2014
For the quantum stochastic processes generated by the Boolean Commutation Relations, we prove the following version of De Finetti Theorem: each of such Boolean process is exchangeable if and only if it is independent and identically distributed with ...
Fidaleo, francesco
core   +1 more source

On the Dovbysh-Sudakov representation result [PDF]

open access: yes, 2009
We present a detailed proof of the Dovbysh-Sudakov representation for symmetric positive definite weakly exchangeable infinite random arrays, called Gram-de Finetti matrices, which is based on the representation result of Aldous and Hoover for arbitrary (
Panchenko, Dmitry
core   +3 more sources

Chaoticity for multi-class systems and exchangeability within classes [PDF]

open access: yes, 2008
Classical results for exchangeable systems of random variables are extended to multi-class systems satisfying a natural partial exchangeability assumption.
Graham, Carl
core   +5 more sources

INVARIANT MEASURES CONCENTRATED ON COUNTABLE STRUCTURES

open access: yesForum of Mathematics, Sigma, 2016
Let $L$ be a countable language. We say that a countable infinite $L$
NATHANAEL ACKERMAN   +2 more
doaj   +1 more source

The law of the iterated logarithm for exchangeable random variables

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 18, Issue 2, Page 391-396, 1995., 1993
In this note, necessary and sufficient conditions for laws of the iterated logarithm are developed for exchangeable random variables.
Hu-Ming Zhang, Robert L. Taylor
wiley   +1 more source

On a representation theorem for finitely exchangeable random vectors [PDF]

open access: yes, 2016
A random vector $X=(X_1,\ldots,X_n)$ with the $X_i$ taking values in an arbitrary measurable space $(S, \mathscr{S})$ is exchangeable if its law is the same as that of $(X_{\sigma(1)}, \ldots, X_{\sigma(n)})$ for any permutation $\sigma$.
Janson, Svante   +2 more
core   +2 more sources

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