Time inhomogeneous multivariate Markov chains: Detecting and testing multiple structural breaks occurring at unknown dates

Bruno Damásio and João Nicolau

Chaos, Solitons & Fractals, 2024, vol. 180, issue C

Abstract: Markov chain models are used in several applications and different areas of study. A Markov chain model is usually assumed to be homogeneous in the sense that the transition probabilities are time-invariant. Yet, ignoring the inhomogeneous nature of a stochastic process by disregarding the presence of structural breaks can lead to misleading conclusions. Several methodologies are currently proposed for detecting structural breaks in a Markov chain. However, these methods have some limitations: namely they can only test directly for the presence of a single structural break. This paper proposes a new methodology for detecting and testing the presence of multiple structural breaks in a Markov chain occurring at unknown dates.

Keywords: Inhomogeneous Markov chain; Structural breaks; Time-varying probabilities (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:180:y:2024:i:c:s0960077924000298

DOI: 10.1016/j.chaos.2024.114478

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