Re: [Gretl-devel] Uploading function packages

On Fri, 3 Oct 2008, Gordon Hughes wrote: > D. I have mentioned previously that the functions can easily > run into non-concave regions, which can cause mle using > analytical derivatives to fail. [The root problem appears to > lie in the behaviour of the function cnorm(x) for large values > of x, since the likelihood function contains terms involving > 1/(1-cnorm(x))...] Just out of curiosity, do things improve using the pvalue() function? They may, for reasons too long to explain here...