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A coherence-based approach for the pattern recognition of time series
Authors:Elizabeth Ann Maharaj  Pierpaolo D’Urso
Institution:a Department of Econometrics and Business Statistics, Monash University-Caulfield Campus, 900 Dandenong Road, Caulfield East, Melbourne, Victoria 3145, Australia
b Dipartimento di Teoria Economica e Metodi Quantitativi per le Scelte Politiche, Sapienza Universita’ di Roma, P.za Aldo Moro, 5-00185, Rome, Italy
Abstract:A pattern recognition approach based on the frequency domain measure of squared coherence is a useful approach to identify linearly related groupings of time series over different periods of time. It is considered in an application to identify similar patterns of the yearly rates of change in the Gross Domestic Product (GDP) of twenty two highly developed countries in an econophysics context. The approach is also tested in simulation studies using linearly related time series, and it is shown to have a very good success rate of correct pattern matching.
Keywords:Linearly related time series  Gross Domestic Product  Squared coherence measure  Pattern recognition of time series  Partitioning Around Medoids  Econophysics
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