A continuous-time stochastic model for the mortality surface of multiple populations

P. Jevtić, Luca Regis

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We formulate, study and calibrate a continuous-time model for the joint evolution of the mortality surface of multiple populations. We model the mortality intensity by age and population as a mixture of stochastic latent factors, that can be either population-specific or common to all populations. These factors are described by affine time-(in)homogeneous stochastic processes. Traditional, deterministic mortality laws can be extended to multi-population stochastic counterparts within our framework. We detail the calibration procedure when factors are Gaussian, using centralized data-fusion Kalman filter. We provide an application based on the joint mortality of UK and Dutch males and females. Although parsimonious, the specification we calibrate provides a good fit of the observed mortality surface (ages 0–89) of both sexes and populations between 1960 and 2013.

Original languageEnglish (US)
Pages (from-to)181-195
Number of pages15
JournalInsurance: Mathematics and Economics
Volume88
DOIs
StatePublished - Sep 2019

Keywords

  • Centralized data fusion
  • Continuous-time stochastic mortality
  • Kalman filter estimation
  • Mortality surface
  • Multi-population mortality

ASJC Scopus subject areas

  • Statistics and Probability
  • Economics and Econometrics
  • Statistics, Probability and Uncertainty

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