Table 6.

Set of preprocessing steps applied to generate the Standardized view for each dataset.

Preprocessing Step	KH	MSa	RW	UCI	WISDM
$G\to m/s^2$		✓		✓
Resampling (20 Hz)	✓	✓	✓	✓	✓
Gravity Removal		✓	✓	✓	✓
Slicing (3 s)	✓	✓	✓	✓	✓
Re-labeling	✓	✓	✓	✓	✓
Train/Test split	✓	✓	✓	✓	✓

a: MotionSense does not provide total acceleration data, only the body and gravity components. To keep it consistent with other datasets, we combined both components together and removed the gravity acceleration by applying the Butterworth filter.