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A Decomposition-Integration Framework of Carbon Price Forecasting Based on Econometrics and Machine Learning Methods

Author

Listed:
  • Zhehao Huang

    (Guangzhou Institute of International Finance, Guangzhou University, Guangzhou 510006, China)

  • Benhuan Nie

    (School of Economics and Statistics, Guangzhou University, Guangzhou 510006, China)

  • Yuqiao Lan

    (School of Statistics, Southwestern University of Finance and Economics, Chengdu 611130, China)

  • Changhong Zhang

    (Department of Data Science, George Washington University, Washington, DC 20052, USA)

Abstract

Carbon price forecasting and pricing are critical for stabilizing carbon markets, mitigating investment risks, and fostering economic development. This paper presents an advanced decomposition-integration framework which seamlessly integrates econometric models with machine learning techniques to enhance carbon price forecasting. First, the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) method is employed to decompose carbon price data into distinct modal components, each defined by specific frequency characteristics. Then, Lempel–Ziv complexity and dispersion entropy algorithms are applied to analyze these components, facilitating the identification of their unique frequency attributes. The framework subsequently employs GARCH models for predicting high-frequency components and a gated recurrent unit (GRU) neural network optimized by the grey wolf algorithm for low-frequency components. Finally, the optimized GRU model is utilized to integrate these predictive outcomes nonlinearly, ensuring a comprehensive and precise forecast. Empirical evidence demonstrates that this framework not only accurately captures the diverse characteristics of different data components but also significantly outperforms traditional benchmark models in predictive accuracy. By optimizing the GRU model with the grey wolf optimizer (GWO) algorithm, the framework enhances both prediction stability and adaptability, while the nonlinear integration approach effectively mitigates error accumulation. This innovative framework offers a scientifically rigorous and efficient tool for carbon price forecasting, providing valuable insights for policymakers and market participants in carbon trading.

Suggested Citation

  • Zhehao Huang & Benhuan Nie & Yuqiao Lan & Changhong Zhang, 2025. "A Decomposition-Integration Framework of Carbon Price Forecasting Based on Econometrics and Machine Learning Methods," Mathematics, MDPI, vol. 13(3), pages 1-31, January.
    • Handle: RePEc:gam:jmathe:v:13:y:2025:i:3:p:464-:d:1580516
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