Preimpact Fall Detection for Elderly Based on Fractional Domain

Table 17

Comparison of the preimpact fall detection effect between fractional domain + multilayer dichotomy and other algorithms.

Classification algorithm	Average lead time (walk/run) ()	Number of used features	Average accuracy (walk/run)	Fall segmentation	Unable to detect the state of fall
Threshold method (single person, independent threshold)	431/184	1		Yes	No
Threshold method (single person, unified threshold)	233/156	1		No	No
Threshold method (multiple people, unified threshold)	270/244	1		No	Yes
KNN	427/311	20	0.85/0.61	Yes	No
Bagged trees	428/333	20	0.77/0.85	Yes	No
Fractional domain + multilayer dichotomy	456/240	2-3	0.9/0.87	Yes	No