Application of Analytical Hierarchy Process (AHP) and Frequency Ratio (FR) Model in Assessing Landslide Susceptibility and Risk - Semi-quantitative Approaches for Landslide Assessment and Prediction - page 210

Fig. 7.8 Landslide susceptibility map

Table 7.6 Relationship between landslide susceptibility (%), landslide frequency (%) and

frequency ratio (FR) and landslide density
Landslide
susceptibility

Pixel
(15 × 15 m)
(b)

%
(B)

Landslide pixel
(15 × 15 m)(a)

%
(A)

Frequency
ratio (FR)
(A/B)

Landslide
density (a/b)

Very low 7,707 9.03 245 4.47 0.50 0.031789282

Low 35,386 41.46 1,247 22.74 0.54 0.035239925

Moderate 34,364 40.26 2,676 48.8 1.21 0.077872192

High 6,932 8.12 1,074 19.58 2.41 0.154933641

Very high 964 1.30 242 4.41 3.39 0.251037344

7.3.2 Accuracy Result of Landslide Susceptibility Map

The comparison between true data and randomly selected data from the classi ed

image was made on GIS Platform that showed the overall classi cation accuracy of

92.22 % and overall Kappa Statistics was 0.894. The class wise accuracy result is
shown in Table 7.7 that indicates acceptable results.