How to change the default range of hyperparameters in fitcecoc function?
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Machine Learning Enthusiast
il 24 Lug 2021
Commentato: Walter Roberson
il 1 Ago 2021
Is it possible to change the default paramater search range of fitcecoc function? I am trying to find the optimal paramters for SVM in custom range to reduce computational time. For example, I am trying to set below range for following parameters.
PolynomialOrder=[2,5]
Any suggestions in this regard would be highly appreciated.
Demo Example:
clc
clear all
load fisheriris
t = templateSVM();
results = fitcecoc(meas, species,'Learners',t,'OptimizeHyperparameters','auto',...
'HyperparameterOptimizationOptions',struct('Optimizer',...
'randomsearch'))
T=results.HyperparameterOptimizationResults
3 Commenti
Don Mathis
il 26 Lug 2021
Walter Roberson's answer is correct. And then you pass 'params' as the value of the 'OptimizeHyperparameters' parameter.
Risposta accettata
Walter Roberson
il 26 Lug 2021
Set nondefault parameters by passing a vector of optimizableVariable objects that have nondefault values. For example,
load fisheriris
params = hyperparameters('fitcecoc',meas,species,'svm');
params(2).Range = [1e-4,1e6];
After you created params look at
{params.Name}
to see which variable is which, to know which one to set the Range for.
2 Commenti
Walter Roberson
il 1 Ago 2021
I think you should be able to do
params(4).Range = {'gaussian', 'polynomial'};
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