Abstract
To effectively prevent land subsidence over abandoned coal mines, it is necessary to quantitatively identify vulnerable areas. In this study, we evaluated the performance of predictive Bayesian, functional, and meta-ensemble machine learning models in generating land subsidence susceptibility (LSS) maps. All models were trained using half of a land subsidence inventory, and validated using the other half of the dataset. The model performance was evaluated by comparing the area under the receiver operating characteristic (ROC) curve of the resulting LSS map for each model. Among all models tested, the logit boost, which is a meta-ensemble machine leaning model, generated LSS maps with the highest accuracy (91.44%), i.e., higher than that of the other Bayesian and functional machine learning models, including the Bayes net (86.42%), naïve Bayes (85.39%), logistic (88.92%), and multilayer perceptron models (86.76%). The LSS maps produced in this study can be used to mitigate subsidence risk for people and important facilities within the study area, and as a foundation for further studies in other regions.
Highlights
Coal mining was once the driving force of the national industry and economic development inKorea, but this situation changed as demand for coal decreased
The probability of land subsidence was predicted for each class, and subsidence hazard was predicted for residential areas
The region with very high susceptibility appeared from the western part of the region to the eastern part as railroad area, which is marked by the red color
Summary
Coal mining was once the driving force of the national industry and economic development inKorea, but this situation changed as demand for coal decreased. Coal mining was once the driving force of the national industry and economic development in. Several previous studies have developed quantitative and qualitative models that have been successfully applied in various hazard susceptibility zones worldwide [3,4,5,6,7,8,9,10,11]. These include logistic regression (LR) [3], frequency ratio
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