Improved model of ELASTIC NET regularization for financial time series

Authors

  • R.N. Kvyetnyy Vinnytsia National Technical University
  • S.I. Borodkin Vinnytsia National Technical University

DOI:

https://doi.org/10.31649/1681-7893-2025-49-1-29-35

Keywords:

Elastic Net, Gaussian weight decay, time series data processing, time series forecasting, financial markets, adaptive weighting, S&P 500, Dow Jones, Nasdaq Composite

Abstract

This paper proposes a modification of Elastic Net regression for short-term forecasting of financial time series by introducing Gaussian weight decay. The new approach is designed to smooth the abrupt “jumps” between the last historical observation and the first forecast—an issue typical of standard regularization. To assess its effectiveness, we formally derive the Elastic Net model with four weighting schemes (no decay, linear, exponential, and Gaussian) and conduct empirical experiments on the S&P 500, Dow Jones Industrial Average, and Nasdaq Composite indices over the period 2020–2025. The results demonstrate that Gaussian decay minimizes the transition gap and achieves the lowest RMSE and Deviation for the S&P 500 and Nasdaq Composite, whereas exponential decay proves optimal for the Dow Jones Industrial Average.

Author Biographies

R.N. Kvyetnyy, Vinnytsia National Technical University

Doctor of Technical Sciences, Professor of the Department of Automation and Intelligent Information Technologies, Faculty of Intelligent Information Technologies and Automation

S.I. Borodkin, Vinnytsia National Technical University

Postgraduate student of the Department of Automation and Intelligent Information Technologies, Faculty of Intelligent Information Technologies and Automation

References

Hastie, T., Tibshirani, R., & Friedman, J. The Elements of Statistical Learning: Data Mining, Inference, and Prediction. 2nd edition. Springer, – 2009 – 533p, https://doi.org/10.1007/978-0-387-84858-7.

Zou H., Hastie T. Regularization and variable selection via the elastic net. J. R. Stat. Soc. Series B, 2005, 67(2): 301–320, https://doi.org/10.1111/j.1467-9868.2005.00503.x.

Wang Y., Hao X., Wu C. Forecasting stock returns: A time-dependent weighted least squares approach. Journal of Financial Markets, 2021, 53: 100568, https://doi.org/10.1016/j.finmar.2020.100568.

Dikheel T.R., Yaseen A.Q. Robust lag weighted lasso for time series model. J. Modern Applied Statistical Methods, 2021, 19(1): 14, https://doi.org/10.56801/10.56801/v19.i.1081.

Lütkepohl, H., Xu, F. The role of the log transformation in forecasting economic variables. Empir Econ 42, 2012, 619–638, https://doi.org/10.1007/s00181-010-0440-1.

Tsay R.S. Analysis of Financial Time Series. 2nd ed. Wiley, 2010, https://doi.org/10.1002/9780470644560.

E. S. Gardner Jr., Exponential Smoothing: The State of the – Part II. International Journal of Forecasting, 22(4), 637–666, https://doi.org/10.1016/j.ijforecast.2006.03.005

R.J. Hyndman, A.B. Koehler. Another look at measures of forecast accuracy. Int. J. Forecast., 2006, 22(4):679–688, https://doi.org/10.1016/j.ijforecast.2006.03.001

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Published

2025-06-18

How to Cite

[1]
R. Kvyetnyy and S. Borodkin, “Improved model of ELASTIC NET regularization for financial time series”, Опт-ел. інф-енерг. техн., vol. 49, no. 1, pp. 29–35, Jun. 2025.

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Section

OptoElectronic/Digital Methods and Systems for Image/Signal Processing

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