Abstract
We discuss ruin theory when the insurance risk process is described by a hidden Markov, regime-switching diffusion process. The innovations approach to filtering theory is used to transform the partially observed modeling framework into one with complete observations. (Robust) filters for the hidden states of the chain are given. A partial differential equation for the ruin probability is derived in the filtered model.
Original language | English |
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Pages (from-to) | 474-489 |
Number of pages | 16 |
Journal | Stochastic Models |
Volume | 27 |
Issue number | 3 |
DOIs | |
Publication status | Published - Jul 2011 |
Externally published | Yes |
Keywords
- Dirichlet problem
- Filtering
- Hidden Markovian regime-switching model
- Innovations approach
- Partial differential equation
- Ruin probability