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A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities.

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Dynamic Time Warping of inverted binary signals

Not sure if this is what you want, but Mueen has a nice paper on fast DTW of sparse binary signals http://www.cs.unm.edu/~mueen/Projects/AWarp/awarp.pdf
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Successive dynamic time warping with a set of window sizes

Hmm There are few properties to help you. Let Wi be a warping window of width i It is the case that DTW_wi(A,B) >= DTW_wi+1(A,B) Other than that, there is little to say. If you have not already, …
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