Get best hyperparameters for ionosphere data using fitcecoc & bayesopt. but i am getting error optimizableVariable.

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load ionosphere
box = optimizableVariable('box',[1e-4,1e3],'Type','real','Transform','log');
kern = optimizableVariable('kern',[1e-4,1e3],'Type','real','Transform','log');
vars = [box,kern];
t = templateSVM('Standardize',true,'KernelFunction','gaussian','kernelscale',vars.kern ,'boxconstraint',;
fun = @(vars)kfoldLoss(fitcecoc(X,Y,'Learners',t,'FitPosterior',true,...
results = bayesopt(fun,vars,'UseParallel',true);
The error coming is shown below:
No appropriate method, property, or field 'kern' for class 'optimizableVariable'.


Alan Weiss
Alan Weiss 2022 年 3 月 20 日
I do not understand why you are attempting to use fitcecoc with a 2-class model. Try this instead:
load ionosphere
mdl = fitcsvm(X,Y,"OptimizeHyperparameters","auto") % The auto parameters are box and kernel scale
Alan Weiss
MATLAB mathematical toolbox documentation

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