模型集群分析策略联合ELM的土壤重金属Pb含量预测

肖烨辉, 宋妮迪, 孟盼盼, 王培俊, 范胜龙

Prediction of lead content in soil based on model population analysis coupled with ELM algorithm

XIAO Yehui, SONG Nidi, MENG Panpan, WANG Peijun, FAN Shenglong

表3 3种回归模型联合各波段选择算法预测结果

Tab.3 Prediction results of three regression models based on different wavelength selection methods

模型 波长选择方法 变量数量 建模集 验证集 R2 RMSE R2 RMSE RPD RPIQ 全波段 2 001 0.702 8.450 0.736 5.426 1.976 2.560 CARS 119 0.726 6.958 0.759 5.235 2.048 2.653 PLSR VISSA 78 0.720 7.033 0.780 5.003 2.143 2.777 IVSO 98 0.718 7.050 0.802 4.748 2.258 2.926 ICO 276 0.720 7.023 0.813 4.610 2.325 3.013 SVM CARS 119 0.643 7.939 0.735 5.485 1.954 2.532 VISSA 78 0.645 7.915 0.745 5.385 1.991 2.579 IVSO 98 0.630 8.075 0.757 5.252 2.041 2.645 ICO 276 0.631 8.069 0.770 5.116 2.095 2.715 ELM CARS 119 0.814 6.338 0.806 4.703 2.279 2.953 VISSA 78 0.861 4.948 0.837 4.304 2.491 3.227 IVSO 98 0.899 4.229 0.858 4.013 2.671 3.461 ICO 276 0.877 4.653 0.863 3.953 2.712 3.514