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1.
The likelihood ratio, logistic regression, and artificial neural networks models are applied and verified for analysis of
landslide susceptibility in Youngin, Korea, using the geographic information system. From a spatial database containing such
data as landslide location, topography, soil, forest, geology, and land use, the 14 landslide-related factors were calculated
or extracted. Using these factors, landslide susceptibility indexes were calculated by likelihood ratio, logistic regression,
and artificial neural network models. Before the calculation, the study area was divided into two sides (west and east) of
equal area, for verification of the models. Thus, the west side was used to assess the landslide susceptibility, and the east
side was used to verify the derived susceptibility. The results of the landslide susceptibility analysis were verified using
success and prediction rates. The verification results showed satisfactory agreement between the susceptibility map and the
existing data on landslide locations. 相似文献
2.
Hung-Ming Lin Shun-Kung Chang Jian-Hong Wu C. Hsein Juang 《Engineering Geology》2009,104(3-4):280-289
This paper is aimed at creating an empirical model for assessing failure potential of highway slopes, with a special attention to the failure characteristics of the highway slopes in the Alishan, Taiwan area prior to, and post, the 1999 Chi-Chi, Taiwan earthquake. The basis of the study is a large database of 955 slope records from four highways in the Alishan area. Artificial neural network (ANN) is utilized to “learn” from this database. The developed ANN model is then used to study the effect of the Chi-Chi earthquake on the slope failure characteristics in the Alishan area. Significant changes in the degrees of influence of several factors (variables) are found and possible reasons for such changes are discussed. The novelty of this paper lies in the fact that the developed ANN models are used as a tool to investigate the slope failure characteristics before and after the Chi-Chi earthquake. 相似文献