期刊
REMOTE SENSING
卷 12, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/rs12020266
关键词
flood; machine learning; remote sensing data; goodness-of-fit; overfitting; Haraz; Iran
类别
资金
- Iran National Science Foundation (INSF) [96004000]
Mapping flood-prone areas is a key activity in flood disaster management. In this paper, we propose a new flood susceptibility mapping technique. We employ new ensemble models based on bagging as a meta-classifier and K-Nearest Neighbor (KNN) coarse, cosine, cubic, and weighted base classifiers to spatially forecast flooding in the Haraz watershed in northern Iran. We identified flood-prone areas using data from Sentinel-1 sensor. We then selected 10 conditioning factors to spatially predict floods and assess their predictive power using the Relief Attribute Evaluation (RFAE) method. Model validation was performed using two statistical error indices and the area under the curve (AUC). Our results show that the Bagging-Cubic-KNN ensemble model outperformed other ensemble models. It decreased the overfitting and variance problems in the training dataset and enhanced the prediction accuracy of the Cubic-KNN model (AUC=0.660). We therefore recommend that the Bagging-Cubic-KNN model be more widely applied for the sustainable management of flood-prone areas.
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