>Dear all, > >The AIC is used to select the "best" model from a list >of theoretical functions. I wonder if its necessary >the models need to be fitted by the same method ?
Yes. The model must be fitted my maximum likelihood. >Would it be possible to stress the AIC to select the >"best" model from models which were fitted for example >by OLS,WLS, REML etc. This means to use AIC to choose >the model and the fitting method ? The algebraic expression for the AIC results from the bias in the maximum log-likelihood of a model as estimator of the mean expected log-likelihood, this bias being a function of the number of free parameters in the model. So it only covers those models fitted by maximum likelihood. Rub�n http://webmail.udec.cl -- * To post a message to the list, send it to [EMAIL PROTECTED] * As a general service to the users, please remember to post a summary of any useful responses to your questions. * To unsubscribe, send an email to [EMAIL PROTECTED] with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list * Support to the list is provided at http://www.ai-geostats.org
