Using self-similarity and renormalization group to analyze time series

Details Using self-similarity and renormalization group to analyze time series Using self-similarity and renormalization group to analyze time series

2008-05-21

arxiv.org/abs/0805.3213v1

Economy

Quantitative Finance

Statistical Finance

16 pages, 9 tables

Scientific paper

An algorithm based on Renormalization Group (RG) to analyze time series forecasting was proposed in cond-mat/0110285. In this paper we explicitly code and test it. We choose in particular some financial time series (stocks, indexes and commodities) with daily data and compute one step ahead forecasts. We then construct some indicators to evaluate performances. The algorithm is supposed to prescribe the future development of the time series by using the self-similarity property intrinsically present in RG approach. This property could be potentially very attractive for the purpose of building winning trading systems. We discuss some relevant points along this direction. Although current performances have to be improved the algorithm seems quite reactive to various combinations of input parameters and different past values sequences. This makes it a potentially good candidate to detect sharp market movements. We finally mention current drawbacks and sketch how to improve them.

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