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Geomechanics and Engineering Volume 34, Number 3, August10 2023 , pages 267-284 DOI: https://doi.org/10.12989/gae.2023.34.3.267 |
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Landslide risk zoning using support vector machine algorithm |
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Vahed Ghiasi, Nur Irfah Mohd Pauzi, Shahab Karimi and Mahyar Yousefi
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| Abstract | ||
| Landslides are one of the most dangerous phenomena and natural disasters. Landslides cause many human and financial losses in most parts of the world, especially in mountainous areas. Due to the climatic conditions and topography, people in the northern and western regions of Iran live with the risk of landslides. One of the measures that can effectively reduce the possible risks of landslides and their crisis management is to identify potential areas prone to landslides through multi-criteria modeling approach. This research aims to model landslide potential area in the Oshvand watershed using a support vector machine algorithm. For this purpose, evidence maps of seven effective factors in the occurrence of landslides namely slope, slope direction, height, distance from the fault, the density of waterways, rainfall, and geology, were prepared. The maps were generated and weighted using the continuous fuzzification method and logistic functions, resulting values in zero and one range as weights. The weighted maps were then combined using the support vector machine algorithm. For the training and testing of the machine, 81 slippery ground points and 81 non-sliding points were used. Modeling procedure was done using four linear, polynomial, Gaussian, and sigmoid kernels. The efficiency of each model was compared using the area under the receiver operating characteristic curve; the root means square error, and the correlation coefficient . Finally, the landslide potential model that was obtained using Gaussian's kernel was selected as the best one for susceptibility of landslides in the Oshvand watershed. | ||
| Key Words | ||
| kernel functions; landslide; logistic function; mapping; prediction rate-area diagram; support vector machine | ||
| Address | ||
| Vahed Ghiasi: Faculty of Civil Engineering, Malayer University, Malayer, Iran Nur Irfah Mohd Pauzi: 2Department of Civil Engineering, College of Engineering, Institute of Energy Infrastructure, Universiti Tenaga Nasional, Malaysia Shahab Karimi: Department of Civil Engineering, Faculty of Engineering, Malayer University, Malayer, Iran Mahyar Yousefi: Faculty of Engineering, Malayer University, Malayer, Iran | ||