time-warp | Ruby gem to warp time in tests | OAuth library
kandi X-RAY | time-warp Summary
kandi X-RAY | time-warp Summary
Ruby gem to warp time in tests
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QUESTION
I have a time-series dataset with two lables (0
and 1
). I am using Dynamic Time Warping (DTW) as a similarity measure for classification using k-nearest neighbour (kNN) as described in these two wonderful blog posts:
ANSWER
Answered 2019-Aug-20 at 07:25You can use a custom metric for KNN. Therefore you only need to implement DTW yourself (or use/adapt any existing DTW implementation in python) [gist of this code].
QUESTION
A now closed discussion shows how to use the R dtw package in python. This is a little clumsy, but the R dtw package is great and better than currently available python dtw implementations. Unfortunately, the windowing functions like the Sakoe-Chiba band do not work when trying to specify a "window.size". There appears to be an issue with the mapping to the argument. Note that "." in arguments is supposed to be replaced with "_" when using rpy2. But following this convention, the argument is not being used for some reason.
...ANSWER
Answered 2018-Jun-21 at 16:05Answering my own question in case anyone ever has the same issue. The problem is the argument mapping and the R three dots ellipsis ‘...’. This can be fixed by specifying the mapping manually.
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