Table 9.

General performance for the different DNN models for both single and multi-output targets.

	M1	M2	M3	M4	M5	SMR-ML	SMR-NN
Single-output (porosity)
R2	0.88	0.99	0.97	0.97	0.96	0.99	0.99
MAE	0.009	0.002	0.003	0.003	0.004	0.001	0.002
C. Time (min)	0.5	1.2	1.1	1.7	0.3	55.6	4.8
Single-output (permeability [mD])
R2	0.58	0.90	0.92	0.92	0.90	0.99	0.99
MAE	0.06	0.02	0.014	0.02	0.02	0.0002	0.012
C. Time (min)	0.4	1.1	1.1	1.5	0.3	229.4	4.5
Multi-output (porosity and permeability [mD])
R2	0.77	0.95	0.96	0.96	0.95	0.93	0.96
MAE	0.12	0.02	0.03	0.02	0.03	0.107	0.018
C. Time (min)	1.2	2.5	3.5	4.4	0.5	10.0	12.1