On detecting and modeling periodic correlation in financial data
E Broszkiewicz-Suwaj,
A Makagon,
Rafał Weron and
Agnieszka Wyłomańska
Physica A: Statistical Mechanics and its Applications, 2004, vol. 336, issue 1, 196-205
Abstract:
For many economic problems standard statistical analysis, based on the notion of stationarity, is not adequate. These include modeling seasonal decisions of consumers, forecasting business cycles and—as we show in the present article—modeling wholesale power market prices. We apply standard methods and a novel spectral domain technique to conclude that electricity price returns exhibit periodic correlation with daily and weekly periods. As such they should be modeled with periodically correlated processes. We propose to apply periodic autoregression models which are closely related to the standard instruments in econometric analysis—vector autoregression models.
Keywords: Periodic correlation; Sample coherence; Electricity price; Periodic autoregression; Vector autoregression (search for similar items in EconPapers)
Date: 2004
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Citations: View citations in EconPapers (16)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:336:y:2004:i:1:p:196-205
DOI: 10.1016/j.physa.2004.01.025
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