Table 2.

Processing times of the most computing-intensive operations

Task description	Sample	Time taken
0.1% Sample extraction	Full corpus	00:58
0.5% Sample extraction	Full corpus	01:03
1% Sample extraction	Full corpus	01:05
Keyword extraction	0.1%	05:57a
Keyword extraction	1%	48:32a

All tasks were run on an Intel Core i7 -7400 3.0 GHz CPU (4 cores) on Ubuntu Linux 20.04 Server 64-bit. We have only included those tasks that took a significant amount of time. All times are given in hh:mm format.

^aDuring the keyword extraction process, we also filtered candidate keywords and extracted other relevant text items (entities, mentions, hashtags, and emojis), thus adding considerable processing time.