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Curriculum Vitae: |
Juillet 2015 : Post-doctorant Aarhus University, Danemark (4 mois) |
Activités de Recherche: |
Titre thèse : Approximation polynomiale de la densité de probabilité et applications en assurance
Directeurs de thèse : Denys POMMERET, Stéphane LOISEL (co-directeur, LSAF, Lyon1) Début : 01/11/2011 Financement : bourse CIFRE (AXA) Soutenance : 29/06/2015 ED184 |
Domaines de Recherche: |
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A polynomial expansion to approximate the ultimate ruin probability in the compound Poisson ruin model ![]() Auteur(s): Goffard Pierre-Olivier, Loisel Stéphane, Pommeret Denys (Document sans référence bibliographique) 2014-00-00 Ref HAL: hal-00853680_v2 Exporter : BibTex | endNote Résumé: A numerical method to approximate ruin probabilities is proposed within the frame of a compound Poisson ruin model. The defective density function associated to the ruin probability is projected in an orthogonal polynomial system. These polynomials are orthogonal with respect to a probability measure that belongs to Natural Exponential Family with Quadratic Variance Function (NEF-QVF). The method is convenient in at least four ways. Firstly, it leads to a simple analytical expression of the ultimate ruin probability. Secondly, the implementation does not require strong computer skills. Thirdly, our approximation method does not necessitate any preliminary discretisation step of the claim sizes distribution. Finally, the coefficients of our formula do not depend on initial reserves. |