www.gusucode.com > ident 案例代码 matlab源码程序 > ident/ComputeNormalizedAICForAnEstimatedModelExample.m

    %% Compute Normalized Akaike's Information Criterion of Estimated Model
%%
% Estimate a transfer function model.

% Copyright 2015 The MathWorks, Inc.

load iddata1 z1;
np = 2;
sys = tfest(z1,np);
%%
% Compute the normalized Akaike's Information Criterion value.
value = aic(sys)
%%
% The value is also computed during model estimation. Alternatively, use 
% the |Report| property of the model to access this value.
sys.Report.Fit.nAIC