Stochastic processes governed by Markovian processes

Processus stochastiques à incréments Markoviens

Lee Dinetan ()
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Lee Dinetan: GREMAQ - Groupe de recherche en économie mathématique et quantitative - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique

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Abstract: We introduce a new class of processes aiming at modelling random fluctuations of an asset value more efficiently than traditional Lévy processes. In this study, we consider that the object value C is a real discrete random process (N → R), whose increments are subject to the present state of a "market", described by a Markovian process M : as the successive market states are not pairwise independent, C's fluctuations are not independent either, so C cannot be assimilated as a Lévy process. We call this structure a C-process : we present methods to analyze it, mainly extending the notion of Lundberg's parameter of a diffusion Lévy process, to take M into account during the computations. Once done, we aim more specifically at controlling C's default time T0 = min ({t ∈ N|C(t)

Keywords: Markovian; ruin; default; risk theory; process (search for similar items in EconPapers)
Date: 2014-12-15
New Economics Papers: this item is included in nep-ger
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