基于PSO-SVR的土压平衡盾构施工进度优化

秦元,余宏淦,陶建峰,孙浩,刘成良

Advance rate optimization of earth pressure balance shield based on PSO-SVR

Yuan QIN,Hong-gan YU,Jian-feng TAO,Hao SUN,Cheng-liang LIU

表 4 各算法模型在验证集和测试集上的表现

Tab.4 Performance of all models on validation set and test set

算法 模型关键参数 验证集 测试集 MSE R2 MSE R2 MLR − 0.005 9 0.602 0.007 2 0.396 RR alpha=100.0 0.005 5 0.630 0.005 6 0.529 DT 'max_depth': 2, 'max_features': 8 0.004 5 0.695 0.028 3 −1.374 KNN 'n_neighbors': 15 0.007 1 0.520 0.009 0 0.245 SVR kernel='linear',C=0.002 0.003 8 0.729 0.004 5 0.625 RF 'max_depth': 2, 'max_features': 8, 'n_estimators': 25 0.004 4 0.705 0.008 9 0.247 AdaBoost 'learning_rate': 0.015, 'loss': 'linear', 'n_estimators': 7 0.006 8 0.540 0.012 5 −0.046 XGBoost 'max_depth': 1, 'n_estimators': 10 0.006 5 0.558 0.009 4 0.214