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http://dx.doi.org/10.9719/EEG.2013.46.4.301

A Comparative Study of Fuzzy Relationship and ANN for Landslide Susceptibility in Pohang Area  

Kim, Jin Yeob (Department of Geoinformation Engineering, Sejong University)
Park, Hyuck Jin (Department of Geoinformation Engineering, Sejong University)
Publication Information
Economic and Environmental Geology / v.46, no.4, 2013 , pp. 301-312 More about this Journal
Abstract
Landslides are caused by complex interaction among a large number of interrelated factors such as topography, geology, forest and soils. In this study, a comparative study was carried out using fuzzy relationship method and artificial neural network to evaluate landslide susceptibility. For landslide susceptibility mapping, maps of the landslide occurrence locations, slope angle, aspect, curvature, lithology, soil drainage, soil depth, soil texture, forest type, forest age, forest diameter and forest density were constructed from the spatial data sets. In fuzzy relation analysis, the membership values for each category of thematic layers have been determined using the cosine amplitude method. Then the integration of different thematic layers to produce landslide susceptibility map was performed by Cartesian product operation. In artificial neural network analysis, the relative weight values for causative factors were determined by back propagation algorithm. Landslide susceptibility maps prepared by two approaches were validated by ROC(Receiver Operating Characteristic) curve and AUC(Area Under the Curve). Based on the validation results, both approaches show excellent performance to predict the landslide susceptibility but the performance of the artificial neural network was superior in this study area.
Keywords
fuzzy relationship; artificial neural network; landslide susceptibility; fuzzy membership value; Pohang;
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