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. 2019 Jan 26;19(3):511. doi: 10.3390/s19030511

Table 4.

The list of essential features for stay activity due to different scenarios.

Scenario List of Features Size
Only accelerometer Avga(x,y,z,n), SMAa, Ea, MEa(y), MEa(xy) 8
Only gyroscope Avgg(x,y,z,n), SDg(z,n), Minmaxg(x,y,z,n),
 Spec2g(z),Spec5g(z,n),Spec9g(n),varg(y),
varMIg,SMAg, Eg,MCg(xy,xz), MEg(x,z),
SMAMCSg(x,y,z)
25
Accelerometer and gyroscope Avga(x,y,n),Ea,MEa(xy), SMAMCSg(x,z) 7
Balanced dataset Avga(x,y,n),Ea,MEa(xy),Avgg(z),
 SMAMCSg(x,z)
8
Unbalanced dataset Avga(y,n),SMAa, Ea,MEa(xy) 5
Selected-features Avga(x,y,n),Ea,MEa(xy), MEg(x,z) 7