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Samplers depend on global seeding #5093

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ricardoV94 opened this issue Oct 21, 2021 · 2 comments
Closed

Samplers depend on global seeding #5093

ricardoV94 opened this issue Oct 21, 2021 · 2 comments
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help wanted maintenance

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@ricardoV94
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ricardoV94 commented Oct 21, 2021 •
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pymc/pymc/step_methods/hmc/nuts.py

Line 185 in a3cc81c

direction = logbern(np.log(0.5)) * 2 - 1

pymc/pymc/step_methods/hmc/nuts.py

Line 303 in a3cc81c

if logbern(size2 - size1):

pymc/pymc/step_methods/hmc/nuts.py

Line 394 in a3cc81c

if logbern(tree2.log_size - log_size):

pymc/pymc/math.py

Lines 214 to 217 in 8ed23e0

def logbern(log_p):
if np.isnan(log_p):
raise FloatingPointError("log_p can't be nan.")
return np.log(np.random.uniform()) < log_p

@ricardoV94
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Related to #4301

@ricardoV94 ricardoV94 changed the title NUTS behavior depends on global seeding Samplers depend on global seeding Apr 15, 2022
@ricardoV94 ricardoV94 mentioned this issue Apr 15, 2022
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@ricardoV94 ricardoV94 mentioned this issue May 23, 2022
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@ricardoV94
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Closing in favor of #5797

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