Exact simulation of a truncated Lévy subordinator

Dassios, Angelos ORCID: 0000-0002-3968-2366, Lim, Jia Wei and Qu, Yan (2020) Exact simulation of a truncated Lévy subordinator. ACM Transactions on Modeling and Computer Simulation, 30 (3). ISSN 1049-3301

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Abstract

A truncated Lévy subordinator is a Lévy subordinator in R+ with Lévy measure restricted from above by a certain level b. In this article, we study the path and distribution properties of this type of process in detail and set up an exact simulation framework based on a marked renewal process. In particular, we focus on a typical specification of truncated Lévy subordinator, namely the truncated stable process. We establish an exact simulation algorithm for the truncated stable process, which is very accurate and efficient. Compared to the existing algorithm suggested in Chi, our algorithm outperforms over all parameter settings. Using the distributional decomposition technique, we also develop an exact simulation algorithm for the truncated tempered stable process and other related processes. We illustrate an application of our algorithm as a valuation tool for stochastic hyperbolic discounting, and numerical analysis is provided to demonstrate the accuracy and effectiveness of our methods. We also show that variations of the result can also be used to sample two-sided truncated Lévy processes, two-sided Lévy processes via subordinating Brownian motions, and truncated Lévy-driven Ornstein-Uhlenbeck processes.

Item Type:	Article
Official URL:	https://tomacs.acm.org/
Additional Information:	© 2020 Association for Computing Machinery. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM Transactions on Modeling and Computer Simulation, {VOL 30, ISS 3, (May 2020)} http://doi.acm.org/10.1145/3368088
Divisions:	Statistics
Subjects:	Q Science > QA Mathematics
Date Deposited:	18 Oct 2019 08:12
Last Modified:	25 Oct 2024 07:30
URI:	http://eprints.lse.ac.uk/id/eprint/102144

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