Importance Analysis of Structural Seismic Demand Based on Support Vector Machine

Table 6

Importance ordering of random variables.

Parameters	Top displacement demand	Maximum interstory drift angle demand	Base shear demand	Maximum floor acceleration demand
fy	8-8-10	6-9-9	9-7-8	8-7-6
Es	6-6-7	5-10-8	5-5-5	5-9-8
Ms	2-2-3	8-3-4	2-2-2	2-2-2
DA	1-1-1	1-1-1	3-3-3	1-1-1
fc	4-4-2	4-4-2	1-1-1	3-3-3
Ec	10-10-9	7-9-10	7-10-7	7-8-10
fys	5-5-8	3-5-6	6-6-6	6-5-4
Ess	7-7-6	10-7-7	4-4-4	9-6-7
c	3-3-4	2-2-3	10-8-10	4-4-5
k	9-9-5	9-6-5	8-9-9	10-10-9

Note: the first number is the importance ordering of the importance measure indexes obtained by SVM based on the RBF kernel function, the second number is the importance ordering of the importance measure indexes obtained by MC, and the third number is the importance ordering of the importance measure indexes obtained by Tornado graphic method.