Multivariate fractional phase–type distributions

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We extend the Kulkarni class of multivariate phase–type distributionsin a natural time–fractional way to construct a new class of multivariatedistributions with heavy-tailed Mittag-Leffler(ML)-distributed marginals.The approach relies on assigning rewards to a non–Markovian jump processwith ML sojourn times. This new class complements an earlier multivari-ate ML construction [2] and in contrast to the former also allows for taildependence. We derive properties and characterizations of this class, andwork out some special cases that lead to explicit density representations.
Original languageEnglish
JournalFractional Calculus and Applied Analysis
Volume23
Issue number5
Pages (from-to)1431-1451
ISSN1311-0454
DOIs
Publication statusPublished - 2020

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