A Hybrid Intelligent Model for Urban Seismic Risk Assessment from the Perspective of Possibility and Vulnerability Based on Particle Swarm Optimization

Table 1

Seismic vulnerability evaluation index.

Objective	Criteria	Factor	Weight
Evaluation of urban earthquake vulnerability	Building vulnerability; 0.3300	Building age	0.0646
		Building structure	0.1628
		Building height	0.1026
	Secondary disaster risk; 0.3300	Flood risk	0.0982
		Fire risk	0.0927
		Pollution leakage risk	0.0581
		Landslide risk	0.0810
	Socioeconomic vulnerability; 0.1404	Population distribution	0.0436
		Vulnerable pop. dist.	0.0693
		Economic strength	0.0275
	Emergency response capability; 0.1996	Fire station coverage	0.0499
		Hospital coverage	0.0499
		Shelter coverage	0.0998