Crack-Considered Elastic Net Monitoring Model of Concrete Dam Displacement

Table 1

Regression coefficients of four different models.

Coefficients	Method
	Stepwise		Elastic net
	Crack-unconsidered	Crack-considered	Crack-unconsidered	Crack-considered
a0	−0.707	−0.733	−0.749	−0.721
a1	−218.0	−172.0	0.270	0.225
a2	5.490	4.320	0.000	0.000
a3	−0.061	-0.048	0.000	0.000
a4	0.000	0.000	0.000	0.000
b11	−0.546	−0.714	−0.556	−0.733
b12	−1.190	−1.290	−1.200	−1.340
b21	−0.332	−0.234	−0.340	−0.227
b22	−0.142	−0.094	−0.148	−0.080
c1	0.000	−0.248	0.000	−0.094
c2	0.000	33.80	0.104	12.60
d1	—	2.130	—	2.120
d2	—	-0.448	—	−0.564