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Fixes overflow bug if moments are large #481

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merged 1 commit into from
Jun 7, 2022

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JGSweets
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@JGSweets JGSweets commented Jun 7, 2022

Overflow error would occur if M2 was large and powered.

OverflowError: (34, 'Numerical result out of range')

This PR fixes the above error. However, a long term fix would be potentially iterating through large data to ensure smaller moments.

@JGSweets JGSweets added Bug Something isn't working High Priority Dramatic improvement, inaccurate calculation(s) or bug / feature making the library unusable labels Jun 7, 2022
@@ -318,7 +318,8 @@ def biased_skew(df_series):
if (M2 == 0):
return 0.0

skew = np.sqrt(n) * M3 / M2 ** 1.5
with np.errstate(all='ignore'):
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@JGSweets JGSweets Jun 7, 2022

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fix (1/2) is here

@@ -354,7 +355,8 @@ def biased_kurt(df_series):
if (M2 == 0):
return -3.0

kurt = n * M4 / M2 ** 2 - 3
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fix (2/2) is here

@ksneab7 ksneab7 enabled auto-merge (squash) June 7, 2022 11:58
@ksneab7 ksneab7 merged commit f448bcf into capitalone:main Jun 7, 2022
stevensecreti pushed a commit to stevensecreti/DataProfiler that referenced this pull request Jun 15, 2022
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4 participants