Research Article

Predicting the Ultimate Bearing Capacity of Bolts with an Optimized Function Model

Table 4

Stability of each model for example 1.

ModelSSPEA1SPEA1SSPEA2SPEA2

AH5.3 × 10−32.42 × 10−22.04 × 10−24.76 × 10−2
CH6.8 × 10−32.74 × 10−22.5 × 10−25.28 × 10−2
IE7.9 × 10−32.96 × 10−21.98 × 10−20.15
IEPF8.1 × 10−33.01 × 10−24.7 × 10−32.27 × 10−2