Monte Carlo simulation of killed diffusions with a single barrier

  • Authors:
  • Bruno Casella;Gareth O. Roberts

  • Affiliations:
  • Lancaster University, Lancaster, UK;Lancaster University, Lancaster, UK

  • Venue:
  • valuetools '06 Proceedings of the 1st international conference on Performance evaluation methodolgies and tools
  • Year:
  • 2006

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Abstract

We present a simple algorithm for Monte Carlo simulation of killed diffusions with a single barrier. The algorithm returns an unbiased, Rao-Blackwellized Monte Carlo estimator for a certain class diffusion processes. Notably, the explicit knowledge of the transition laws of the process is not a prerequisite for our unbiased Monte Carlo method. The numerical test demonstrates that the proposed estimator performs very favorably in comparison to competitors based on discretization schemes.