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Different matrix profiles between tsmp & STUMP #95

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snvv opened this issue Feb 13, 2021 · 2 comments
Open

Different matrix profiles between tsmp & STUMP #95

snvv opened this issue Feb 13, 2021 · 2 comments

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@snvv
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snvv commented Feb 13, 2021

Hello and thank you for your excellent software.

I tried to reproduce the MP of a time series (ts) using stumby and tsmp.
ts: 0 1 3 2 9 1 14 15 1 2 2 10 7
tsmp mp: 0.6 0.3 1.6 1.1 1.3 1.8 3.0 2.8 0.3 0.6
stumby mp: 6.9 1.4 6.2 7.9 11.4 13.6 14.1 14.0 1.4 6.2
I think the difference should be due to some normalization that takes place in tsmp that is hidden of the end user. Is it possible to pass a normalization parameter to tsmp to allow the end user to choose the normalization method or to use unnormalized data?
Regards
SN

@franzbischoff
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franzbischoff commented Feb 14, 2021 via email

@vanbenschoten
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@snvv I'd also recommend comparing against our Python implementation "matrixprofile". That could serve as a tie-breaker in this case :)

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