Impact of Parameter Tuning with Genetic Algorithm, Particle Swarm Optimization, and Bat Algorithm on Accuracy of the SVM Model in Landslide Susceptibility Evaluation

Table 1

Pearson correlation coefficient.

	Slope	Lithology	SPI	TWI	Annual rainfall	Terrain roughness	Distance to roads	Elevation	Altitude
Slope	1	0.171	−0.052	0.033	0.275	0.681	0.036	0.007	0.060
Lithology	0.171	1	0.013	0.018	0.263	0.148	0.040	−0.011	−0.040
SPI	−0.052	0.013	1	0.384	0.010	−0.044	0.003	−0.105	0.031
TWI	0.033	0.018	0.384	1	0.003	0.019	0.013	0.026	0.059
Annual rainfall	0.275	0.263	0.010	0.003	1	0.237	0.019	−0.024	−0.188
Terrain roughness	0.681	0.148	−0.044	0.019	0.237	1	0.040	−0.003	0.006
Distance to roads	0.036	0.040	0.003	0.013	0.019	0.040	1	0.024	−0.028
Aspect	0.007	−0.011	−0.105	0.026	−0.024	−0.003	0.024	1	0.013
Elevation	0.060	−0.040	0.031	0.059	−0.188	0.006	−0.028	0.013	1