Table 2.

Data information [70].

(A) Content and split of data
Nation	Training set (60%)	Validation set (20%)	Test set (20%)
India	2020/2/19–2020/8/16 (180 days)	2020/8/17–2020/10/15 (60 days)	2020/10/16–2020/12/14 (60 days)
UK
US

(B) Split of data in the day forward-chaining validation
#1 2020/2/19–2020/4/18 (60 days)	#2 2020/4/19–2020/6/17 (60 days)	#3 2020/6/18–2020/8/16 (60 days)	#4 2020/8/17–2020/10/15 (60 days)	#5 2020/10/16–2020/12/14 (60 days)
Training set	Validation set	Test set	/	/
Training set	Training set	Validation set	Test set	/
Training set	Training set	Training set	Validation set	Test set