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Copulas for Markovian dependence
Stockholm University, Faculty of Science, Department of Mathematics.
2010 (English)In: Bernoulli, ISSN 1350-7265, E-ISSN 1573-9759, Vol. 16, no 2, 331-342 p.Article in journal (Refereed) Published
Abstract [en]

Copulas have been popular to model dependence for multivariate distributions, but have not been used much in modelling temporal dependence of univariate time series. This paper demonstrates some difficulties with using copulas even for Markov processes: some tractable copulas such as mixtures between copulas of complete co- and countermonotonicity and independence (Frechet copulas) are shown to imply quite a restricted type of Markov process and Archimedean copulas are shown to be incompatible with Markov chains. We also investigate Markov chains that are spreadable or, equivalently, conditionally i.i.d.

Place, publisher, year, edition, pages
2010. Vol. 16, no 2, 331-342 p.
Keyword [en]
copulas, exchangeability, Markov chain, Markov process
National Category
Mathematics
Identifiers
URN: urn:nbn:se:su:diva-48983DOI: 10.3150/09-BEJ214ISI: 000278910700002OAI: oai:DiVA.org:su-48983DiVA: diva2:376250
Note
authorCount :1Available from: 2010-12-10 Created: 2010-12-10 Last updated: 2017-12-11Bibliographically approved

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Lagerås, Andreas N.
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