8000 gh-115532: Minor tweaks to kde() by rhettinger · Pull Request #117897 · python/cpython · GitHub
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Merged
merged 3 commits into from
Apr 15, 2024
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gh-115532: Minor tweaks to kde() #117897

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8581eb0
Change variable name to match the supporting reference.
rhettinger Apr 13, 2024
04b4f25
Auto detect size changes
rhettinger Apr 6, 2024
3fe2c65
Add kernel invcdf for the parabolic kernel
rhettinger Apr 15, 2024
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Add kernel invcdf for the parabolic kernel
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@rhettinger
rhettinger committed Apr 15, 2024
commit 3fe2c653d095b7fbd42f73e6fd9564432d24ed12
3 changes: 2 additions & 1 deletion Doc/library/statistics.rst
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Expand Up @@ -1163,7 +1163,7 @@ accurately approximated inverse cumulative distribution function.
.. testcode::

from random import choice, random, seed
from math import sqrt, log, pi, tan, asin
from math import sqrt, log, pi, tan, asin, cos, acos
from statistics import NormalDist

kernel_invcdfs = {
Expand All @@ -1172,6 +1172,7 @@ accurately approximated inverse cumulative distribution function.
'sigmoid': lambda p: log(tan(p * pi/2)),
'rectangular': lambda p: 2*p - 1,
'triangular': lambda p: sqrt(2*p) - 1 if p < 0.5 else 1 - sqrt(2 - 2*p),
'parabolic': lambda p: 2 * cos((acos(2*p-1) + pi) / 3),
'cosine': lambda p: 2*asin(2*p - 1)/pi,
}

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