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55.085
2012 Sep 11
1
Strange result from GAMLSS
Hi Folks! Just started using the gamlss package and I tried a simple code
example (see below). Why the negative sigma?
John
> y <- rt(100, df=1)> m1<-fitDist(y, type="realline")Warning messages:1: In MLE(ll3, start = list(eta.mu = eta.mu, eta.sigma = eta.sigma, :
possible convergence problem: optim gave code=1 false convergence
(8)2: In MLE(ll4, start = list(eta.mu =