Modeling of Temperature Effect on Modal Frequency of Concrete Beam Based on Field Monitoring Data

Figure 8

Histograms of PEs generated by three regression models on training set (horizontal axis represents PEs, and vertical axis represents sample number). (a1) MLR for 1st mode; (a2) MLR for 2nd mode; (a3) MLR for 3rd mode; (a4) MLR for 4th mode; (b1) BPNN for 1st mode; (b2) BPNN for 2nd mode; (b3) BPNN for 3rd mode; (b4) BPNN for 4th mode; (c1) SVR for 1st mode; (c2) SVR for 2nd mode; (c3) SVR for 3rd mode; (c4) SVR for 4th mode.