Table 2.
Topics identified by BERTopic and Top2Vec for “flight.”
| BERTopic | Top2Vec | |||
|---|---|---|---|---|
| No. | Topic/content | Examples of keywords | Topic/content | Examples of keywords |
| 1 | Airline industry | air travel, airline, air travel is, airlines, aviation, flights, the airline industry, the airline, airline industry, flight | Negative PCR / vaccination and quarantine | hours before, pre-departure, negative covid, all travelers, fully vaccinated, pcr, quarantine, days, requirement, mandatory |
| 2 | Flight routes | flights from, flights, direct flights, flights from india, canada eyes policy, canada eyes, india to canada, to canada, ban on direct, as india covid19 | White House Secretary Tests Positive / travel guide from governmental institution | secretary, simon, house, white, tested positive, travel guidelines, cdc, mps, travelers, to follow |
| 3 | (Unable) to return home / Australian | australians, travel ban, fly home, fly home from, who fly home, who fly, to australia, australians who fly, covid travel ban, travel ban | Negative PCR / fully vaccinated before departure / foreign travelers / Mexico | negative covid, fully vaccinated, foreign travelers, pre departure, hours before, required to, before you, to enter, pcr, mexico |
| 4 | COVID transmission through air | the air, aerosols, droplets, air, airborne, covid travels, through the air, virus travels, how covid travels, covid travels through | Negative PCR / fully vaccinated before departure / foreign travelers / the Netherlands and Canada | negative covid, departure, hours before, international travelers, fully vaccinated, biden, the united, requirement, netherlands, canadians |
| 5 | Airports Authority of India (AAI) / India | aai, airports, aai airports, airport, the airport, flights, aai is, airports are, from aai, air traffic | Follow travel guidelines on public transport (train / bus / flight) / seek help and more info | train, bus, while traveling, covid appropriate, more information, to follow, covid guidelines, mandatory, by air, please help |
| 6 | Airport news | news airport airtravel, airtravel covid19 covid19india, airport airtravel, airport airtravel covid19, travelers news airport, airtravel covid19, travel covid19, flight travel covid19, air travel associations, airports air | ||