Table 2.

Results of NN-BPLM for each case of COVID-19 model

Case	Mean square error			Performance	Gradient	Mu	Epoch	Time
	Training	Validation	Testing
1	9.7083e−05	1.6596e−0	1.3610e−04	9.64e−05	1.84e−03	1e−06	96	< 0.5
2	1.7914e−04	4.9947e−04	3.5796e−04	1.38e−04	1.10e−01	1e−06	28	< 0.5
3	8.7912e−05	1.0044e−04	8.5482e−05	8.70e−05	1.13e−03	1e−06	80	< 0.5
4	2.3975e−05	1.5640e−05	1.4822e−05	2.14e−05	2.97e−02	1e−06	68	< 0.5
5	7.1286e−05	2.3021e−04	1.8626e−04	7.13e−05	1.01e−03	1e−07	1000	8