Predictive Modelling of Landslide Susceptibility in the Western Carpathian Flysch Zone

Mária Barančoková, Matej Šošovička, Peter Barančok and Peter Barančok
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Mária Barančoková: Institue of Landscape Ecology, Slovak Academy of Sciences, Štefánikova 3, 814 99 Bratislava, Slovakia
Matej Šošovička: Faculty of Mathematics, Physics and Informatics, Comenius University Bratislava, 842 48 Bratislava, Slovakia
Peter Barančok: Faculty of Mathematics, Physics and Informatics, Comenius University Bratislava, 842 48 Bratislava, Slovakia
Peter Barančok: Institue of Landscape Ecology, Slovak Academy of Sciences, Štefánikova 3, 814 99 Bratislava, Slovakia

Land, 2021, vol. 10, issue 12, 1-28

Abstract: Landslides are the most common geodynamic phenomenon in Slovakia, and the most affected area is the northwestern part of the Kysuca River Basin, in the Western Carpathian flysch zone. In this paper, we evaluate the susceptibility of this region to landslides using logistic regression and random forest models. We selected 15 landslide conditioning factors as potential predictors of a dependent variable (landslide susceptibility). Classes of factors with too detailed divisions were reclassified into more general classes based on similarities of their characteristics. Association between the conditioning factors was measured by Cramer’s V and Spearman’s rank correlation coefficients. Models were trained on two types of datasets—balanced and stratified, and both their classification performance and probability calibration were evaluated using, among others, area under ROC curve ( A U C ), accuracy ( A c c ), and Brier score ( B S ) using 5-fold cross-validation. The random forest model outperformed the logistic regression model in all considered measures and achieved very good results on validation datasets with average values of A U C v a l = 0.967 , A c c v a l = 0.928 , and B S v a l = 0.079 . The logistic regression model results also indicate the importance of assessing the calibration of predicted probabilities in landslide susceptibility modelling.

Keywords: predictive modelling; correlation analysis; logistic regression; random forest; landslide susceptibility; western carpathians (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:10:y:2021:i:12:p:1370-:d:700239

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