Variants of the Smith-Wilson method with a view towards applications

Thomas Viehmann

Papers from arXiv.org

Abstract: We propose two variants of the Smith-Wilson method for practical application in the insurance industry. Our first variant relaxes the Smith-Wilson energy and can be used to incorporate less reliable market data with a certain weight rather than disregarding it completely. This is particularly useful for deriving yield curves in the IFRS 17 accounting regime, where there is a mandate to incorporate all available market data. A second variant incorporates the requirement to reach the ultimate forward rate at a prescribed term into the problem formulation. This provides a natural way to fulfil the Solvency II convergence requirement and is more elegant than the current methodology adapting the term-scale parameter to control convergence.

Date: 2019-06
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