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evu/poisson.py

Created August 20, 2021 17:28
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Poisson regression in python
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poisson.py
import statsmodels.api as sm
from patsy import dmatrices
import numpy as np
y, X = dmatrices("time_s ~ cloud + model + sensor", data=df)
# Note that offset is in 100s of square miles
offset = np.asarray(df["sq_mi"]) / 100
m = sm.Poisson(y, X, offset=offset)
fitted = m.fit()
fitted.summary()
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