Fig. 5
ASAP procedure overview. (a) Signal processing to extract heart rate (HR) and movement (acceleration magnitude). (b) Feature extraction to produce change point segments, wavelet packet transforms of HR and Acc, and local wavelet coherence between HR and Acc. (c) Feature selection using Lasso regularised logistic regression. (d) Attention prediction using logistic regression with selected features and further refinement to reconstruct the temporal structure. Coloured boxes in (b)–(d) indicate the three stages of attention prediction. (e) An example of change point detection of mean shift.
