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Table 5 List of the top 20 keywords with the corresponding frequency

From: Exploring emerging IoT technologies in smart health research: a knowledge graph analysis

  Keyword Frequency   Keyword Frequency
1 internet of thing 2329 11 technology 351
2 wearable sensor 812 12 security 345
3 system 715 13 accelerometer 313
4 healthcare 670 14 wearable 290
5 sensor 644 15 machine learning 272
6 internet 580 16 wireless sensor network 271
7 wearable device 563 17 cloud computing 268
8 health 430 18 big data 264
9 physical activity 366 19 smart home 263
10 thing 352 20 parkinsons disease 256