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Improve gak #514

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Improve gak #514

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b015275
Improve gak
YannCabanes Apr 4, 2024
4811801
Add data type specifications for gak to return the same data type tha…
YannCabanes Apr 4, 2024
c966e3f
Add a test where gak is working without overflow for constant time se…
YannCabanes Apr 4, 2024
18f3c1b
fix dtype error in the function _cdist_generic in the file utils.py
YannCabanes Apr 16, 2024
edbe59d
Add precisions about GAK normalization in the documentation file kern…
YannCabanes Apr 23, 2024
4f33f76
Improve gak documentation in kernel.rst
YannCabanes Apr 23, 2024
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Add a test where gak is working without overflow for constant time se… 
…ries equal to zero of length 405
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@YannCabanes
YannCabanes committed Apr 4, 2024
commit c966e3f4c209070761d899eb420de8d3ad52845d
5 changes: 5 additions & 0 deletions tslearn/tests/test_metrics.py
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Expand Up @@ -446,6 +446,11 @@ def test_gak():
for array_type in array_types:
backend = instantiate_backend(be, array_type)
# GAK
gak_zeros = tslearn.metrics.gak(
s1=backend.zeros(405, dtype=backend.float64),
s2=backend.zeros(405, dtype=backend.float64),
sigma=1.0)
np.testing.assert_allclose(gak_zeros, desired=1, atol=1e-8)
g = tslearn.metrics.cdist_gak(
cast([[1, 2, 2, 3], [1.0, 2.0, 3.0, 4.0]], array_type), sigma=2.0, be=be
)
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