calc_hyperparameter

 CALC_HYPERPARAMETER: calculate hyperparameter value
   The hyperparameter is can be either provided directly,
     or can be based an automatic selection approach
 
 calc_hyperparameter can be called as
    hyperparameter= calc_hyperparameter( inv_model )
 where inv_model    is an inv_model structure

 if inv_model.hyperparameter.func exists, it will be
   called, otherwise inv_model.hyperparameter.value will
   be returned

 TODO: does hyperparameter depend on inv_model, or does
       it also depend on the data?

0001 function hyperparameter = calc_hyperparameter( inv_model )
0002 % CALC_HYPERPARAMETER: calculate hyperparameter value
0003 %   The hyperparameter is can be either provided directly,
0004 %     or can be based an automatic selection approach
0005 %
0006 % calc_hyperparameter can be called as
0007 %    hyperparameter= calc_hyperparameter( inv_model )
0008 % where inv_model    is an inv_model structure
0009 %
0010 % if inv_model.hyperparameter.func exists, it will be
0011 %   called, otherwise inv_model.hyperparameter.value will
0012 %   be returned
0013 %
0014 % TODO: does hyperparameter depend on inv_model, or does
0015 %       it also depend on the data?
0016 
0017 % (C) 2005 Andy Adler. License: GPL version 2 or version 3
0018 % $Id: calc_hyperparameter.html 2819 2011-09-07 16:43:11Z aadler $
0019 
0020 if isfield( inv_model.hyperparameter, 'func')
0021 
0022    hyperparameter = eidors_obj('get-cache', inv_model, 'hyperparameter');
0023    if ~isempty(hyperparameter)
0024       eidors_msg('calc_hyperparameter: using cached value', 2);
0025       return
0026    end
0027 
0028    hyperparameter= feval( inv_model.hyperparameter.func, inv_model);
0029 
0030    eidors_obj('set-cache', inv_model, 'hyperparameter', hyperparameter);
0031    eidors_msg('calc_hyperparameter: setting cached value', 2);
0032 
0033 else
0034     hyperparameter= inv_model.hyperparameter.value;
0035 end