Is there any python library for computing EMD between two signatures? There are multiple options to compute EMD between two distributions (e.g. pyemd). But I didn't find any implementation for the exact EMD value. For example, consider Signature_1 = {(1,1), (4,1)} and Signature_2 = {(1,1), (2,1), (3,1), (4,1)}, where first coordinate is the position and second coordinate is the weight. True EMD(Signature_1, Signature_2) = 0 whereas if we consider these as distributions then the distance is 0.5 (the emd_samples in pyemd gives this answer). But I would be interested in the implementation of True EMD. Any help in this regard would be appreciated.
Exact Earth Mover's Distance (NOT Mallows Distance) Python Code
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No worries. I got the answer. You can just use "normalized" = False, "extra_mass_penalty" = 0 in the arguments of "emd_samples" function of pyemd.