LIBSVM: What does svmpredict function quiet mode mean?

After installing libsvm in MATLAB, enter svmpredict and you can see that its usage is as follows:

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)
Returns:
  predicted_label: SVM prediction output vector.
  accuracy: a vector with accuracy, mean squared error, squared correlation coefficient.
  prob_estimates: If selected, probability estimate vector.

Where'libsvm_options' is a string, if it is'-q', it means quiet mode

If you do not add'-q', after running svmpredict normally, Accuracy and other information will be printed on the console, but if you add'-q', these messy things will not be printed, and directly return [predicted_label], or Returns [predicted_label, accuracy, decision_values/prob_estimates]

If you bring it, write it as:

[a1, a2, a3] = svmpredict(a4, a5, a6, a7)

It will return [predicted_label, accuracy, decision_values / prob_estimates ] these three quantities
if written as:

[a1] = svmpredict(a4, a5, a6, a7)

Just return predicted_label
if written as:

[a1， a2] = svmpredict(a4, a5, a6, a7)

If the parameters do not match, the svmpredict operation will not be executed, and it will print out the instructions for using svmpredict on the console.

LIBSVM: What does svmpredict function quiet mode mean?

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