Regional landslide hazard assessment based on rough set
Liu Yan-hua, YE Guo-hua, Chen Wei-qing · 2010
With rough set theory, the study area is divided into regular grid cells, landslide hazard assessment indexes system and geohazards knowledge representation system and decision table in study area are designed. On this basis, specific algorithms for assessment indexes system optimization and weights confirmation are constructed. So that landslide hazard quantitative scores are calculated,and landslide hazard gradation is classified, that is, high hazard, medium hazard, low hazard and very low hazard four grades. To achieve visualization of assessment results,GIS is used to accomplish zoning mapping. Comparison by information content model and field survey, the results of assessment are verified correct.