I have a question of an annoying fact. I'm using libsvm with matlab and I'am able to predict using:
predicted_label = svmpredict(Ylabel, Xlabel, model);
but it happen that every time I make a predictions appears this:
Accuracy = X% (y/n) (classification)
Which I find annoying because I am repeating this procedure a lot of times and also makes it slow because its displaying in screen.
I think what I want is to avoid that svmpredict being verbose.
Can anyone help me with this? Thanks in advance.
-Jessica
I found a much better approach than editing the source code of the c library was to use matlabs evalc which places any output to the first output argument.
[~ predicted_label] = evalc('svmpredict(Ylabel, Xlabel, model)');
Because the string to be evaluated is fixed should be no performance decrease.
svmpredict(Ylabel, Xlabel, model, '-q');
From the manual:
Usage: [predicted_label, accuracy, decision_values/prob_estimates] = svmpredict(testing_label_vector, testing_instance_matrix, model, 'libsvm_options')
[predicted_label] = svmpredict(testing_label_vector, testing_instance_matrix, model, 'libsvm_options')
Parameters:
model: SVM model structure from svmtrain.
libsvm_options:
-b probability_estimates: whether to predict probability estimates, 0 or 1 (default 0); one-class SVM not supported yet
-q : quiet mode (no outputs)
If you are using matlab, just find the line of code that is displaying this information (usually using 'disp' , 'sprintf' , or 'fprintf' ) and comment it out using the commenting operator % .
example:
disp(['Accuracy= ' num2str(x)]);
change it to:
% disp(['Accuracy= ' num2str(x)]);
If you are using the main libsvm library then you need to modify it before making. 1- Open the file 'svmpredict.c'
2- find this line of code:
info("Accuracy = %g%% (%d/%d) (classification)\n",
(double)correct/total*100,correct,total);
3- just comment it out using // operator
4- save and close the file
5- make the project
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.