te( ) interactions and AIC model selection with GAM
Bert, thanks for the very useful link. I am duly chastised for not having searched thoroughly enough. Will
On 8/2/2012 10:02 AM, Bert Gunter wrote:
Well, geez! Without trying to upstage SImon, why not google it yourself?! http://en.wikipedia.org/wiki/Akaike_information_criterion (seemed pretty clear to me...) -- Bert On Thu, Aug 2, 2012 at 9:54 AM, Will Shadish <wshadish at ucmerced.edu> wrote:
Simon, could you clarify this paragraph. We are submitting to a psychology journal and I am certain they will be asking us about why it is still ok to use AIC for non-nested models. Thanks. Will Shadish On 8/2/2012 9:49 AM, Simon Wood wrote:
For AIC model comparison, the usual advice applies that although the comparisons are a bit more reliable for nested models (since then some of the AIC approximations errors are the same in both cases, and cancel in the comparison), it is still ok to use AIC for non-nested models (i.e. it is *not* like most hypothesis testing where everything falls apart if you don't have nesting). best, Simon
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