Using Hybrid Machine Learning Methods to Predict and Improve the Energy Consumption Efficiency in Oil and Gas Fields

Table 6

The RMSE value of these 6 combinations over all subsets’ test dataset.

Ensemble	ANN, ELM	ANN, SVM	ANN, LR	SVM, LR	ELM, SVM	ELM, LR
Subset 1	0.41	2.65	4.23	5.34	2.76	4.46
Subset 2	0.48	2.73	4.56	5.21	2.91	4.59
Subset 3	0.55	2.89	4.91	5.97	3.02	5.03