Pile-Raft Settlements Prediction under Coupled Static-Dynamic Loads Using Four Heuristic Regression Approaches

Table 4

Regression tree obtained from M5Tree for settlement modeling.

if x4 <= 22; if x5 <= 75; if x3 <= 4.5; y = 7.85 (8); else; if x1 <= 12.5; if x4 <= 18; y = 5.9533 (3); else; y = 5.0467 (3); else; if x4 <= 18; y = 7.2633 (6); else; if x1 <= 20.5; if x3 <= 5.5; y = 6.06 (2); else; y = 5.66 (2); else; y = 6.625 (2); else; if x3 <= 4.5; if x4 <= 18; y = 11.677 (5)

else; if x2 <= 0.4; y = 9.4867 (3); else; y = 10.695 (2); else; if x4 <= 18; if x1 <= 12.5; y = 8.8236 (2); else; if x3 <= 5.5; y = 10.335 (4); else; y = 9.53 (3); else; if x2 <= 0.4; y = 7.6925 (4); else; y = 8.69 (4); else; if x5 <= 75; if x4 <= 28; if x3 <= 4.5; y = 5.6125 (4); else; if x1 <= 12.5; if x3 <= 5.5; y = 3.965 (2)

else; y = 3.695 (2); else; if x1 <= 20.5; if x3 <= 5.5; y = 4.585 (2); else; y = 4.335 (2); else; y = 5.16 (2); else; if x1 <= 12.5; y = 3.148 (5); else; if x3 <= 4.5; y = 4.39 (3); else; if x1 <= 20.5; if x3 <= 5.5; y = 3.61 (2); else; y = 3.39 (2); else; y = 4.135 (2)

else; if x4 <= 28; if x3 <= 4.5; if x1 <= 20.5; y = 7.36 (3); else; y = 8.245 (2); else; if x1 <= 20.5; if x2 <= 0.4; y = 5.7625 (4); else; y = 6.27 (2); else; y = 6.94 (2); else; if x3 <= 4.5; if x1 <= 20.5; y = 5.7367 (3); else; y = 6.315 (2); else; if x2 <= 0.4; y = 4.4675 (4); else; y = 5.36 (4)