Python fastdtw (Dynamic Time Warping (DTW) )

记录备用

Install

pip install fastdtw

Example

import numpy as np
from scipy.spatial.distance import euclidean
from fastdtw import fastdtw

x = np.array([[1,1], [2,2], [3,3], [4,4], [5,5]])
y = np.array([[2,2], [3,3], [4,4]])
distance, path = fastdtw(x, y, dist=euclidean)
print(distance)

>>> import numpy as np
>>> from scipy.spatial.distance import euclidean
>>> 
>>> from fastdtw import fastdtw
>>> x = np.array([[1,1], [2,2], [3,3], [4,4], [5,5]])
>>> x
array([[1, 1],
       [2, 2],
       [3, 3],
       [4, 4],
       [5, 5]])
>>> y = np.array([[2,2], [3,3], [4,4]])
>>> y
array([[2, 2],
       [3, 3],
       [4, 4]])
>>> distance, path = fastdtw(x, y, dist=euclidean)
>>> print(distance)
2.8284271247461903

REF:

https://pypi.org/project/fastdtw/