CombinedDistance

Distances combined via arithmetic operation, e.g., addition, multiplication.

Quickstart

from sktime.dists_kernels.algebra import CombinedDistance

estimator = CombinedDistance(pw_trafos, operation=None)

Parameters(2)

pw_trafoslist of sktime pairwise panel distances, or

list of tuples (str, transformer) of sktime pairwise panel distances distances combined to a single distance using the operation

operationNone, str, function, or numpy ufunc, optional, default = None = mean

if str, must be one of “mean”, “+” (add), “*” (multiply), “max”, “min” if func, must be of signature (1D iterable) -> float operation carried out on the distance matrices distances

Examples

>>> from sktime.dists_kernels.algebra import CombinedDistance
>>> from sktime.dists_kernels.dtw import DtwDist
>>> from sktime.datasets import load_unit_test
>>> 
>>> X, _ = load_unit_test ()
>>> X = X [0: 3 ]
>>> sum_dist = CombinedDistance ([DtwDist (), DtwDist (weighted = True)], "+")
>>> dist_mat = sum_dist. transform (X) the same can also be done more compactly using dunders:
>>> sum_dist = DtwDist () + DtwDist (weighted = True)
>>> dist_mat = sum_dist (X)