Estimating both parameters of a negative binomial distribution NB(N,p) by maximum likelihood sounds like an obvious exercise. But it is not because some samples lead to degenerate solutions, namely p=0 and N=∞… This occurs when the mean of the sample is larger than its empirical variance, s²>x̄, not an impossible instance: I discovered this when reading a… 236 more words
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“Recently, El Moselhy et al. proposed a method to construct a map that pushed forward the prior measure to the posterior measure, casting Bayesian inference as an optimal transport problem.
It’s officially October now which means one thing for those of us in school: midterms. Well, midterms, essays, and overall high stress levels. The warm frivolous days of summer are long behind us, the introductory lessons just finished, and now we all, students or not, feel the pressure to seriously get back to work. 456 more words
I’ve written about my bittersweet leaving of Longwood – but not about my new adventure in education. Too busy working, I guess. And the wound was raw last fall – in ways I didn’t realize until I landed in a new teaching job and found myself looking over my shoulder, reminiscent of a war vet with PTSD. 637 more words