Table 3.
Topics identified by BERTopic and Top2Vec for “travel bubble.”
| BERTopic | Top2Vec | |||
|---|---|---|---|---|
| No. | Topic/content | Examples of keywords | Topic/content | Examples of keywords |
| 1 | Australia and New Zealand | travel bubble, travel bubble with, the travel bubble, australia travel bubble, zealandaustralia travel bubble, new zealandaustralia travel, zealand travel, zealand travel bubble, bubble with australia, after travel bubble | Australia and New Zealand / quarantine hotel | sydney, victoria, queensland, australia, hotel quarantine, nz, in hotel, quarantine free, lockdown, auckland |
| 2 | Singapore and Hong Kong | bubble, travel bubble, singapore, air travel bubble, travel bubble is, bubble is, singaporehong kong air, singaporehong kong, breaking singaporehong kong, as singapore battles | Australia and New Zealand / Singapore / Taiwan / vaccinated | zealand, quarantine free, singapore, hotel quarantine, 2 weeks, isolate, vaccinated travelers, lockdown, melbourne, Taiwan |
| 3 | Travel pass | travel pass, covid travel pass, eus covid travel, eus covid, the eus covid, covid travel, summer travel, travel passes, travel passes as, launch covid travel | Hong Kong and Singapore / Australia and New Zealand / green list / vaccinated / UK / Philippines | hong kong, singapore, zero covid, taiwan, green list, australia, vaccinated travelers, philippines, zealand, business travel |
| 4 | Nonessential travel / Canada and Mexico ferry / spread of COVID-19 | canada and mexico, on non-essential travel, nonessential travel at, nonessential travel, ferry crossings, crossings with canada, ferry crossings with, land and ferry, and ferry crossings, spread of covid19 | Quarantine free / Singapore / Australia and New Zealand / Taiwan / Hong Kong / Korea / Hawaii / Indonesia | quarantine free, singapore, hk, auckland, taiwan, korea, sydney, hawaii, indonesia, vaccinated travelers |
| 5 | Business travel | business travel, tourism, travel industry, the travel industry, tourism industry, and tourism, travel and tourism, and tourism industry, travel and, tourism industry the | Singapore / Hong Kong / Australia / Taiwan / fully vaccinated / green list | taiwan, singapore, hong kong, business travel, zealand, australia, fully vaccinated, portugal, green list, israel |