Table 1.
Top 25 ranking keywords based on term frequency-inverse document frequency (TF-IDF) analysis.
| Rank | Keywords | TF-IDF |
| 1 | Medical care | 60.75 |
| 2 | Government | 55.69 |
| 3 | Hospital | 48.76 |
| 4 | COVID-19 | 46.52 |
| 5 | Care | 45.61 |
| 6 | Insurance | 44.98 |
| 7 | Health | 42.01 |
| 8 | Information | 40.43 |
| 9 | Bio | 39.92 |
| 10 | Remote | 37.15 |
| 11 | Data | 36.60 |
| 12 | Company | 36.29 |
| 13 | USA | 34.58 |
| 14 | Seoul | 33.84 |
| 15 | Startup | 33.23 |
| 16 | Technology | 31.70 |
| 17 | Health | 31.49 |
| 18 | Digital | 30.22 |
| 19 | Communication | 30.02 |
| 20 | Economy | 27.54 |
| 21 | Regulation | 27.41 |
| 22 | Innovation | 27.13 |
| 23 | Samsung | 26.48 |
| 24 | Seoul National University | 24.31 |
| 25 | Venture | 23.33 |