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AIC value for negbin regression does not matches with R #70

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sourish-cmi opened this issue Dec 28, 2022 · 0 comments
Open

AIC value for negbin regression does not matches with R #70

sourish-cmi opened this issue Dec 28, 2022 · 0 comments
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@sourish-cmi @ShouvikGhosh2048
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Describe the bug
A clear and concise description of what the bug is.

To Reproduce
The following code reproduce the issue:

library(aod)
library(Zelig)
data(sanction)
fit = negbin(num ~ 0 + target + coop + ncost, ~1, sanction)
AIC(fit)

This gives 344.896 compared to CRRao's 344.87955007518536.

Expected behavior
CRRao's AIC value should match with that of R
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@sourish-cmi sourish-cmi

@ShouvikGhosh2048 ShouvikGhosh2048

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@sourish-cmi @ShouvikGhosh2048