MATLAB: How to calculate AIC in glmfit

aicfitglmglmglmfitStatistics and Machine Learning Toolbox

Please help me with this!
How to calculate AIC in glmfit? I use gamma and log as link function.
Thanks a lot!

Best Answer

It is recommended to use fitglm instead of the older glmfit. Depending on the release of MATLAB (> R2012a) you can use either of the two:
http://www.mathworks.com/help/stats/fitglm.html
http://www.mathworks.com/help/stats/generalizedlinearmodel.fit.html
You can access AIC, BIC etc as follows:
load hospital
modelspec = 'Smoker ~ Age*Weight*Sex - Age:Weight:Sex';
mdl = fitglm(hospital,modelspec,'Distribution','binomial')
mdl.ModelCriterion
ans = 
     AIC: 137.141380948166
    AICc: 138.358772252513
     BIC: 155.377572250082
    CAIC: 162.377572250082
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