CLASSIFYING SIGNALS USING FEATURE TRAJECTORIES
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United States of America Patent
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app pub date -
Jan 19, 2016
filing date -
Jan 19, 2016
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Abstract
An input signal may be classified by comparing a trajectory of a sequence of feature vectors of the input signal to sequences of feature vectors of reference signals, wherein the reference signals correspond to classes. For a class, a score may be computed that indicates a match between the trajectory of the input signal with trajectories of reference sequences corresponding to the class. The input signal may be classified by selecting a class corresponding to a highest score. In some implementations, the score may by computed by determining a number of nearest neighbors of the class to the input signal or by sequentially processing the input signal and updating a score for successive steps of the input sequence.
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