Fig 1.
Preprocessing data chart.
Fig 2.
The number of Tweets under the top 9 hashtags by dates.
Fig 3.
Coherence score for the number of topics.
Table 1.
Identified salient topics and their components (bi-grams).
Fig 4.
Intertopic distance map.
Table 2.
Themes and most likely topic components (bi-grams).
Table 3.
Representative Tweets within themes.
Fig 5.
Emotions trends during the early stages of the COVID-19.
Table 4.
Percentage of each emotion within 11 topics and p-value from Z-test.