search for: 20selection

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2006 Oct 12
0
Is there a function in R to evaluate the adjusted AIC or other statistc where overdispersion existed in GLMs?
...criteria(e.g.deviance,AIC...) in GLMs isn't very good for selecting the best model when overdispersion exist, so we need to adjust the corresponding statistic,see(Fitzmaurice,G.M. (1997) Model selection with overdispersed data<file:///D:/²©Ê¿¿ÎÌâ/Prediction%20model%20of%20Snails/1997/Model%20Selection%20with%20Overdispersed%20Data.pdf>, The Statistician,46(1):81-91.). Is there a function in R to evaluate the adjusted AIC or other statistc where overdispersion existed in GLMs? How should i do in that case? Thanks in advance. -- With Kind Regards, oooO::::::::: (..)::::::::: :\.(:::Oooo::...