Prediction of steel fatigue strength based on mutual information feature selection and recursive feature elimination
Journal of Mechanical StrengthVol. 48, Issue 1, Pages: 72-78(2026)
作者机构:
1.天津职业技术师范大学 汽车模具智能制造技术国家地方联合工程实验室,天津 300222
2.天津职业技术师范大学 天津市高性能精准成形制造技术与装备重点实验室,天津 300222
作者简介:
LI Zhen, E-mail: lzcy430121@163.com
基金信息:
National Natural Science Foundation of China(52075386);Tianjin Natural Science Foundation of China-Multi-Input Key Projects(22JCZDJC00650);China Postdoctoral Science Foundation(2020M672309);Shaanxi Key Laboratory of High-performance Precision Forming Technology and Equipment(PETE2019KF02)
YAO Lei,LI Zhen,WU Chuan,et al. Prediction of steel fatigue strength based on mutual information feature selection and recursive feature elimination[J]. Journal of Mechanical Strength,2026,48(1):72-78.
YAO Lei,LI Zhen,WU Chuan,et al. Prediction of steel fatigue strength based on mutual information feature selection and recursive feature elimination[J]. Journal of Mechanical Strength,2026,48(1):72-78. DOI: 10.16579/j.issn.1001.9669.2026.01.009.
Prediction of steel fatigue strength based on mutual information feature selection and recursive feature elimination
To address the challenges in fatigue strength prediction caused by limited data and high-dimensional feature space
a method combining mutual information feature selection and recursive feature elimination (MIFS-RFE) is proposed.
Methods
2
Firstly
MIFS was used to identify crucial features for prediction. Subsequently
the remaining features were processed in the RFE stage. Through an iterative process
the most informative features were selected to ensure accurate fatigue strength prediction. The finalized feature subset was input into random forest regression (RFR)
K-nearest neighbors regression (KNN)
support vector regression (SVR)
and multilayer perceptron (MLP) models for performance analysis.
Results
2
After optimization
the feature dimensionality was reduced from 25 to 13. During the test process
RFR
KNN
SVR
and MLP achieved
R
2
values of 0.977 7
0.972 5
0.961 3
and 0.976 6
respectively. Compared with the test results of all features
the proposed method increased the maximum
R
2
of the model by 0.020 8. Finally
based on the SHAP value
the influence of effective features was analyzed
and the effectiveness of the combination of MIFS and RFE was validated. The results indicate that the proposed method maintains high performance while reducing feature dimensionality
offering an optimized solution for fatigue strength prediction.
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