In model 1 (without the constant in the log-l), the value of the maximized log-likelihood is -447. If one wants to arrive at the actual full value of the log-likelihood one should add to this nobs*ln(4/sqrt(2/$pi)) = 595*0.46.. = 274, and obtain -447 + 274 = -173.
Now in model 2, parameter estimates are virtually identical with model 1, so one would expect that, since here the constant is already included in the logl eq., it would arrive at a comparable result with the corrected full value (i.e. -173), and not +511, which is the value for the logl given by the code in model 2. Alecos Papadopoulos Athens University of Economics and Business, Greece Department of Economics cell:+30-6945-378680 fax: +30-210-8259763 skype:alecos.papadopoulos On 10/7/2013 19:00, gretl-users-request(a)lists.wfu.edu wrote: > ------------------------------ Message: 2 Date: Wed, 10 Jul 2013 > 09:05:57 +0200 (CEST) > From: "Riccardo (Jack) Lucchetti" <r.lucchetti(a)univpm.it> > Subject: Re: [Gretl-users] Graph two densities together and Constant > in Log Likelihood To: Gretl list <gretl-users(a)lists.wfu.edu> > Message-ID: <alpine.DEB.2.10.1307100904510.23263(a)ec-4.econ.univpm.it> > Content-Type: text/plain; charset="iso-8859-15" On Wed, 10 Jul 2013, > Alecos Papadopoulos wrote: >> Just a note that >> in model 2 (that is virtually identical to model 1 as regards to >> estimates and final gradient values), the value of the logl appears >> positive. > Since you add a positive constant to each observation, why would that be > surprising? > > ------------------------------------------------------- > Riccardo (Jack) Lucchetti > Dipartimento di Scienze Economiche e Sociali (DiSES) > > Universit? Politecnica delle Marche > (formerly known as Universit? di Ancona) > > r.lucchetti(a)univpm.it > http://www2.econ.univpm.it/servizi/hpp/lucchetti > ------------------------------------------------------- > > ------------------------------ > > _______________________________________________ > Gretl-users mailing list > Gretl-users(a)lists.wfu.edu > http://lists.wfu.edu/mailman/listinfo/gretl-users > > End of Gretl-users Digest, Vol 78, Issue 12 > ******************************************* >
