Table 6. Testing and validation of cumulative confirmed and death COVID-19 cases in five countries by the fine-tuned IndRNN.

Data	Country	Testing		Validation
		RMSE	MAPE (%)	RMSE	MAPE (%)
Cumulative cases	United States	138,071.00	0.43	1355857.54	3.34
	India	77,668.00	0.46	1587170.63	4.30
	Brazil	164,181	1.15	1027451.51	6.18
	France	320,132.50	5.89	719450.18	11.53
	Russia	19,647.00	0.42	213593.59	3.77
	China	17.90	0.02	187.94	0.17
	Global	558,483	0.38	2953263.00	1.60
Cumulative deaths	United States	1273.06	0.22	25260.92	3.72
	India	5,752.81	2.99	39954.53	13.92
	Brazil	1,460.31	0.37	24974.75	4.90
	France	300.83	0.29	3236.43	2.36
	Russia	194.50	0.18	3333.14	2.47
	China	2.00	0.04	2.14	0.05
	Global	5,829.50	0.19	47980.75	1.17