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A Hybrid Model for Carbon Price Forecasting Based on Secondary Decomposition and Weight Optimization

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  • Yongfa Chen

    (School of Mathematics and Statistics, Changchun University, Changchun 130022, China)

  • Yingjie Zhu

    (School of Mathematics and Statistics, Changchun University, Changchun 130022, China
    Graduate School, Changchun University, Changchun 130022, China)

  • Jie Wang

    (School of Mathematics and Statistics, Changchun University, Changchun 130022, China)

  • Meng Li

    (Graduate School, Changchun University, Changchun 130022, China
    College of Mechanical and Vehicle Engineering, Changchun University, Changchun 130022, China)

Abstract

Accurate carbon price forecasting is essential for market stability, risk management, and policy-making. To address the nonlinear, non-stationary, and multiscale nature of carbon prices, this paper proposes a forecasting framework integrating secondary decomposition, two-stage feature selection, and dynamic ensemble learning. Firstly, the original price series is decomposed into intrinsic mode functions (IMFs), using complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN). The IMFs are then grouped into low- and high-frequency components based on multiscale entropy (MSE) and K-Means clustering. To further alleviate mode mixing in the high-frequency components, an improved variational mode decomposition (VMD) optimized by particle swarm optimization (PSO) is applied for secondary decomposition. Secondly, a two-stage feature-selection method is employed, in which the partial autocorrelation function (PACF) is used to select relevant lagged features, while the maximal information coefficient (MIC) is applied to identify key variables from both historical and external data. Finally, this paper introduces a dynamic integration module based on sliding windows and sequential least squares programming (SLSQP), which can not only adaptively adjust the weights of four base learners but can also effectively leverage the complementary advantages of each model and track the dynamic trends of carbon prices. The empirical results of the carbon markets in Hubei and Guangdong indicate that the proposed method outperforms the benchmark model in terms of prediction accuracy and robustness, and the method has been tested by Diebold Mariano (DM). The main contributions are the improved feature-extraction process and the innovative use of a sliding window-based SLSQP method for dynamic ensemble weight optimization.

Suggested Citation

  • Yongfa Chen & Yingjie Zhu & Jie Wang & Meng Li, 2025. "A Hybrid Model for Carbon Price Forecasting Based on Secondary Decomposition and Weight Optimization," Mathematics, MDPI, vol. 13(14), pages 1-24, July.
    • Handle: RePEc:gam:jmathe:v:13:y:2025:i:14:p:2323-:d:1706687
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    References listed on IDEAS

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