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On a simple graphical approach to modelling economic fluctuations with an application to United Kingdom price inflation, 1265-2005

Chan, W., Ng, M. W. and Tong, Howell (2006) On a simple graphical approach to modelling economic fluctuations with an application to United Kingdom price inflation, 1265-2005. Annals of Actuarial Science, 1 (1). pp. 103-128. ISSN 1748-4995

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Identification Number: 10.1017/S1748499500000075


Structural instability in economic time series is widely reported in the literature. It is most prevalent in such series as price indices and inflation related data. Many methods have been developed for analysing and modelling structural changes in a univariate time series model. However, most of them assume that the data are generated by one fixed type (linear or non-linear) of the time series processes. This paper proposes a strategy for modelling different segments of an economic time series by different linear or non-linear models. A graphical procedure is suggested for detecting the model change points. The proposed procedure is illustrated by modelling annual United Kingdom price inflation series over the period 1265 to 2005. Stochastic modelling of inflation rates is an important topic to actuaries for dealing with long-term index linked insurance business. The proposed method suggests dividing the U.K. inflation series into four segments for modelling. Inflation projections based on the latest segment of the data are obtained through simulations. To get a better understanding of the impact of structural changes on inflation projections we also perform a forecasting study.

Item Type: Article
Official URL:
Additional Information: © 2006 Institute and Faculty of Actuaries
Divisions: Statistics
Subjects: H Social Sciences > HB Economic Theory
Q Science > QA Mathematics
JEL classification: C - Mathematical and Quantitative Methods > C3 - Econometric Methods: Multiple; Simultaneous Equation Models; Multiple Variables; Endogenous Regressors > C32 - Time-Series Models
C - Mathematical and Quantitative Methods > C4 - Econometric and Statistical Methods: Special Topics > C40 - General
C - Mathematical and Quantitative Methods > C5 - Econometric Modeling > C50 - General
Sets: Departments > Statistics
Collections > Economists Online
Date Deposited: 14 Oct 2008 08:46
Last Modified: 15 Sep 2021 23:10

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