Journal of Northeastern University(Natural Science) ›› 2026, Vol. 47 ›› Issue (1): 107-114.DOI: 10.12068/j.issn.1005-3026.2026.20240127

• Materials & Metallurgy • Previous Articles     Next Articles

Prediction Model of BiGRU-Att Sinter Drum Index Based on Hybrid Feature Selection

Xiao-tong LI, Xiao-long SONG, Jin-xin FAN, Zhao-xia WU()   

  1. School of Control Engineering,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China.
  • Received:2024-05-29 Online:2026-01-15 Published:2026-03-17
  • Contact: Zhao-xia WU

Abstract:

Because the sintering process has complex and high-dimensional process variables and many uncertain factors, it is difficult for a single feature selection method to effectively select the best feature set, which affects the prediction accuracy of the model. Therefore, a prediction model of attention mechanism-based bidirectional gated recurrent unit model (BiGRU-Att) sinter drum index based on hybrid feature selection was proposed. Firstly, the maximum information coefficient (MIC) was used to select candidate features from the original feature set. Then, the feature selection method based on simultaneous perturbation stochastic approximation (SPSA-FS) was used to further optimize the candidate feature set. Finally, the best feature set was used as the input of BiGRU-Att to predict the sinter drum index. The results of comparative analysis with multiple models and single feature selection methods show that the hybrid feature selection method proposed in this paper can select the best feature set, and the established model has higher prediction accuracy, providing reliable decision-making support for the sintering process.

Key words: sinter drum index, hybrid feature selection method, BiGRU, prediction model, attention mechanism

CLC Number: