Joseph Modayil, Tongxin Bai, and Henry Kautz. 2008.
Improving the recognition of interleaved activities.
Tenth International Conference on Ubiquitous Computing (Ubicomp 2008),
We introduce Interleaved Hidden Markov Models for recognizing multitasked
activities. The model captures both inter-activity and intra-activity
dynamics. Although the state space is
intractably large, we describe an approximation that is both
effective and efficient. This method significantly reduces the
error rate when compared with previously proposed methods. The
algorithm is suitable for mobile platforms where computational
resources may be limited.