this suggests that it's not converging properly. you may have an
identification problem (remember we talked about what that meant). one of
your independent variables may be problematic or you just don't have enough
observations.
2009/3/23 sparsha saha <sparshahoneysaha at gmail.com>
last thing, we get this error message when we run
negbin in zelig
1: In theta.ml(Y, mu, sum(w), w, limit = control$maxit, trace =
control$trace > :
iteration limit reached
2: In theta.ml(Y, mu, sum(w), w, limit = control$maxit, trace =
control$trace > :
iteration limit reached
does that mean there are not enough observations for the number of
explanatory variables? because we don't get it when we use fewer explanatory
variables
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Patrick Lam
Department of Government and Institute for Quantitative Social Science,
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