how to apply dynamic time wrapping

how to apply dynamic time wrapping in Matlab if the length of the sequence is not equal. Can we do zero padding for sequence and apply DTW.

Answer 1

[Greg Dionne]

DTW(X,Y) can work on vectors of non-equal length. It will repeat elements in either X or Y so that the comparison is of the same length.

To find out what those indices are, you can use the version:

[D, IX, IY] = DTW(X,Y)

This returns two index vectors, IX and IY, of equal length. In this way you can determine which elements of X are paired with Y. See the second version documentation for dtw (link)