Reading the gamma, cost, and epsilon parameters of SVM model?

Question

Using the LibSVM MATLAB interface, I trained an SVM model with specified gamma, cost, and epsilon parameters via:

model = svmtrain(trDatY,trDatX,'-s 3 -t 2 -c 1 -g 0.0004 -p 0.003 -h 0');

and saved it to a file via:

save('SVRModel1','y_hat','tsDatY','model');

When I read the model file back into MATLAB using:

load('SVRModel1');

I see some of the model parameters but not the C and epsilon values I specified:

>> model

model = 

Parameters: [5x1 double]
  nr_class: 2
   totalSV: 8612
       rho: -90.5478
     Label: []
     ProbA: []
     ProbB: []
       nSV: []
   sv_coef: [8612x1 double]
       SVs: [8612x258 double]

>> model.Parameters

ans =

    3.0000
    2.0000
    3.0000
    0.0004
         0

Can someone please tell me how to save/read the model so that I can read and retrieve all the parameters I set to train the model?

Thank you!

Answer 1

The model.Parameters includes the value of '-s -t -d -g -r' respectively, and the cost function coefficient ( C ) and epsilon is not included. You may just save them separately besides save model