Classification of physical activities based on sparse representation
Shaopeng Liu, Robert X. Gao, Dinesh John, JOHN W. STAUDENMAYER, Patty S. Freedson · 2012
This paper presents a new classification method for physical activity assessment, based on sparse representation. This method bypasses the need for feature extraction and selection that is typically involved for activity classification, and classifies activities using raw sensor signals directly. Higher discriminative power than that from the conventional k-nearest neighbor algorithm has been demonstrated through experiments performed on 105 subjects.