Re: st: Unknown function () error.

["Vimalanand S. Prabhu" <prabhu@unc.edu>]

Dear Partha,

Can you please make any suggestions as to how I can proceed?

Thanks,

Prabhu

Partha Deb wrote:
> Watch the # - I think you want * .
>
> Also, this isn't the likelihood function for a NB unless you do 
> something more with uu.  As specified, since uu is a constant, it's a 
> Poisson with an additional constant (and hence not identified).
>
> Partha
>
> Vimalanand S. Prabhu wrote:
>
>
> > Hi
> >
> > I am new to ml command. I am getting an error: Unknown    function (), 
> > when I run the following code for negative binomial count model. Is 
> > there any obvious error in the code which I seem to miss out.
> >
> > The L function is -exp(lambda.ui).(lambda.ui)^yi/(yi)!
> >
> > program define nbreg2
> > args lnf theta uu
> > quietly replace `lnf' = -exp(`theta')#`uu' + $ML_y1#(`theta'+ln(`uu')) 
> > - lnfact($ML_y1)
> > end
> > ml model lf nbreg2 (jdemh=price eff) ()
> > ml check
> > ml maximize
> >
> > Thanks,
> >
> > Prabhu
> > *
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*
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