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2011 May 26
0
'constrained' negative.binomial model estimates
...s the effect of 'constraining' the predicted flows to reproduce the observed outgoing flows from each origin: > sums <- aggregate(migration$flows, by=list(migration$origin), sum) > sums1 <- aggregate(predict(model1, type='response'), by=list(migration$origin), sum) > sums2 <- aggregate(predict(model2, type='response'), by=list(migration$origin), sum) which works fine for both poisson and quasipoisson models. However, I would also like to fit a negative.binomial model to this data to (again) account for over-dispersion (which may still exist even after the...