GBDT-Based Fall Detection with Comprehensive Data from Posture Sensor and Human Skeleton Extraction

Table 1

Statistical characteristics.

Acceleration data		Skeleton data
Features	Symbol	Features	Symbol
Mean value	Amean	Mean value	Rmean
Standard deviation value	Astd	Standard deviation value	Rstd
Maximum value	Amax	Maximum value	Rmax
Minimum value	Amin	Minimum value	Rmin
Average change value	Ad	Average change value	Rd
Mean crossings value	AMCV	Mean crossings value	RMCV
Root mean square value	ARMS	Root mean square value	RRMS