ICML2008/Modeling Interleaved Hidden Processes
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< ICML2008
Niels Landwehr, from Leuven
[edit] Notes
- HMMs model activity recognition
- sometimes people do two things at a time! In actuality, they interleave actions (i.e. not really at the same time; Dietterich has an application where actual concurrency is needed).
- generative model: two HMMs, generate from them, interleave
- expressed as DBNs: only one HMM is active at any given time
- state-space is Cartesian product; however, the transition matrix will have lots of zeros, since the inactive HMM can't change state.
