Talk:Beta negative binomial distribution
Add topicLatest comment: 7 years ago by Alexandre.bouchard in topic Error in the PMF
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Error in the PMF
[edit]The PMF is inconsistent with the mean and I believe the Beta-NB generative model described in the intro. The factor in the PMF shown as Beta(alpha + r, beta + k) should be Beta(alpha + k, beta + r). I suspect there are ramifications in the rest of the article.
This probably stems from copying from a reference that uses a different success/failure parameterization for the negative binomial. — Preceding unsigned comment added by Alexandre.bouchard (talk • contribs) 00:37, 31 January 2019 (UTC)