Periodic Unobserved Cycles in Seasonal Time Series with an Application to US Unemployment*

Siem Jan Koopman, Marius Ooms and Irma Hindrayanto ()

Oxford Bulletin of Economics and Statistics, 2009, vol. 71, issue 5, 683-713

Abstract: We introduce a general class of periodic unobserved component (UC) time series models with stochastic trend and seasonal components and with a novel periodic stochastic cycle component. The general state space formulation of the periodic model allows for exact maximum likelihood estimation, signal extraction and forecasting. The consequences for model‐based seasonal adjustment are discussed. The new periodic model is applied to postwar monthly US unemployment series from which we identify a significant periodic stochastic cycle. A detailed periodic analysis is presented including a comparison between the performances of periodic and non‐periodic UC models.

Date: 2009
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Citations: View citations in EconPapers (6)

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https://doi.org/10.1111/j.1468-0084.2009.00557.x

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Working Paper: Periodic Unobserved Cycles in Seasonal Time Series with an Application to US Unemployment (2006)
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