Evolving Machine Learning Methods for Density Estimation of Liquid Alkali Metals over the Wide Ranges

Table 2

The statistical indexes for suggested models.

		R2	MRE	MSE	RMSE	STD
GEP	Train	0.9999	0.7935	0.0391	0.8908	0.1387
	Test	0.9999	0.9184	0.0551	0.9583	0.1683
	Total	0.9999	0.8559	0.0471	0.9245	0.1435
ANFIS	Train	1	0.766	0.033	0.1816	0.1276
	Test	1	0.815	0.0335	0.1829	0.1273
	Total	1	0.778	0.0331	0.1829	0.1274
LSSVM	Train	1	0.167	0.0056	0.075	0.0693
	Test	1	0.154	0.0042	0.0651	0.0592
	Total	1	0.164	0.0053	0.0651	0.0668