“…1) Time domain features: e.g. the coefficients of an autoregressive (AR) model for each of the x, y, and z axes [11,18,[26][27][28][29], signal magnitude area (SMA) [11,18,[26][27][28]30], tilt angle [11,31], Histogram [17], mean [17,26,31], standard deviation [25,26], Jerk [32,33], roll angle [11,24] skewness, kurtosis and total integral of modulus of accelerations (IMA) [12], and.…”