| Citation: |
Ao Zhang, Xin-wen Zhao, Xing-yuezi Zhao, Xiao-zhan Zheng, Min Zeng, Xuan Huang, Pan Wu, Tuo Jiang, Shi-chang Wang, Jun He, Yi-yong Li, 2024. Comparative study of different machine learning models in landslide susceptibility assessment: A case study of Conghua District, Guangzhou, China, China Geology, 7, 104-115. doi: 10.31035/cg2023056
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Comparative study of different machine learning models in landslide susceptibility assessment: A case study of Conghua District, Guangzhou, China
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Abstract
Machine learning is currently one of the research hotspots in the field of landslide prediction. To clarify and evaluate the differences in characteristics and prediction effects of different machine learning models, Conghua District, which is the most prone to landslide disasters in Guangzhou, was selected for landslide susceptibility evaluation. The evaluation factors were selected by using correlation analysis and variance expansion factor method. Applying four machine learning methods namely Logistic Regression (LR), Random Forest (RF), Support Vector Machines (SVM), and Extreme Gradient Boosting (XGB), landslide models were constructed. Comparative analysis and evaluation of the model were conducted through statistical indices and receiver operating characteristic (ROC) curves. The results showed that LR, RF, SVM, and XGB models have good predictive performance for landslide susceptibility, with the area under curve (AUC) values of 0.752, 0.965, 0.996, and 0.998, respectively. XGB model had the highest predictive ability, followed by RF model, SVM model, and LR model. The frequency ratio (FR) accuracy of LR, RF, SVM, and XGB models was 0.775, 0.842, 0.759, and 0.822, respectively. RF and XGB models were superior to LR and SVM models, indicating that the integrated algorithm has better predictive ability than a single classification algorithm in regional landslide classification problems.
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References
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Ao Zhang, Xin-wen Zhao, Xing-yuezi Zhao, Xiao-zhan Zheng, Min Zeng, Xuan Huang, Pan Wu, Tuo Jiang, Shi-chang Wang, Jun He, Yi-yong Li, 2024. Comparative study of different machine learning models in landslide susceptibility assessment: A case study of Conghua District, Guangzhou, China, China Geology, 7, 104-115. doi: 10.31035/cg2023056
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Figure 1.
Location of the study area (a) and geographical location of the study area and historical landslide distribution map (b).
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Figure 2.
Flowchart of the machine learning model for landslide susceptibility evaluation.
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Figure 3.
Basic environmental factors of landslide susceptibility assessment.
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Figure 4.
Correlation analysis of evaluation factors of heat map.
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Figure 5.
Analysis of the ROC curve of different landslide models using training dataset.
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Figure 6.
Analysis of the ROC curve of different landslide models using testing dataset.
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Figure 7.
Landslide susceptibility maps using different landslide models.
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Figure 8.
Typical landslides verification.
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Figure 9.
Different classes distribution of grid ratio on slope map.