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  • Predicting flood susceptibi...
    Fang, Zhice; Wang, Yi; Peng, Ling; Hong, Haoyuan

    Journal of hydrology, March 2021, 2021-03-00, Volume: 594
    Journal Article

    •LSTM is considered for flood susceptibility prediction in a sequence perspective.•An appropriate feature engineering method is integrated with the LSTM network.•A reliable flood susceptibility map can be obtained by using the LSS-LSTM method.•The proposed method can achieve better performance than benchmark methods. Identifying floods and producing flood susceptibility maps are crucial steps for decision-makers to prevent and manage disasters. Plenty of studies have used machine learning models to produce reliable susceptibility maps. Nevertheless, most research ignores the importance of developing appropriate feature engineering methods. In this study, we propose a local spatial sequential long short-term memory neural network (LSS-LSTM) for flood susceptibility prediction in Shangyou County, China. The three main contributions of this study are summarized below. First of all, it is a new perspective to use the deep learning technique of LSTM for flood susceptibility prediction. Second, we integrate an appropriate feature engineering method with LSTM to predict flood susceptibility. Third, we implement two optimization techniques of data augmentation and batch normalization to further improve the performance of the proposed method. The LSS-LSTM method can not only capture the attribution information of flood conditioning factors and the local spatial information of flood data, but also has powerful sequential modelling capabilities to deal with the spatial relationship of floods. The experimental results demonstrate that the LSS-LSTM method achieves satisfactory prediction performance (93.75% and 0.965) in terms of accuracy and area under the receiver operating characteristic (ROC) curve.