Helix: Unsupervised Grammar Induction for Structured Activity Recognition


The omnipresence of mobile sensors has brought tremendous opportunities to ubiquitous computing systems. In many natural settings, however, their broader applications are hindered by three main challenges: rarity of labels, uncertainty of activity granularities, and the difficulty of multi-dimensional sensor fusion. In this paper, we propose building a… (More)
DOI: 10.1109/ICDM.2011.74


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