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    Segmental Switching Linear Dynamic Systems

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    GIT-CC-05-13.pdf (418.4Kb)
    Date
    2005
    Author
    Oh, Sang Min
    Rehg, James M.
    Dellaert, Frank
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    Abstract
    We introduce Segmental Switching Linear Dynamic Systems (S-SLDS), which improve on standard SLDSs by explicitly incorporating duration modeling capabilities. We show that S-SLDSs can adopt arbitrary finite-sized duration models that describe data more accurately than the geometric distributions induced by standard SLDSs. We also show that we can convert an S-SLDS to an equivalent standard SLDS with sparse structure in the resulting transition matrix. This insight makes it possible to adopt existing inference and learning algorithms for the standard SLDS models to the S-SLDS framework. As a consequence, the more powerful S-SLDS model can be adopted with only modest additional effort in most cases where an SLDS model can be applied. The experimental results on honeybee dance decoding tasks demonstrate the robust inference capabilities of the proposed S-SLDS model.
    URI
    http://hdl.handle.net/1853/9437
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    • College of Computing Technical Reports [505]
    • Computational Perception & Robotics [213]
    • Computational Perception & Robotics Publications [213]

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