Marshal.FreeHGlobal(x.weight); causes unknown error about libsvmsharp HOT 4 OPEN

if you use Weights\ WeightLabels and model , you should reload model. like this is OK:
SaveModel and LoadModel

parameter.WeightLabels = lableFeaturesBuilder.CreateWeightLables("行政湖景双床房").ToArray();
parameter.Weights = new double[] { 1.90, 1.90, 1.90, 1.99, 1.99 };

var model2 = LibSVMsharp.SVM.Train(problem, parameter);
model2.SaveModel("roomMatching.model");

var model = LibSVMsharp.SVM.LoadModel("roomMatching.model");
foreach (var room in rooms1)
{
predictedY = LibSVMsharp.SVM.Predict(model, nodes);

you can see my sample:

https://github.com/zengfr/SVM-Neuro-Matching/blob/master/roomMatching/roomMatching/Program.cs

from libsvmsharp.

Even wrapping them inside try catch causes error :(

The error does not happen if i don't use parameter.WeightLabels

from libsvmsharp.

First, sorry for my late answer.

Could you explain how you use weights for each class?
By using the properties Weights and WeightLabels in SVMParameter?

Please check the lines between 414 and 424 in this link, just to be sure.

from libsvmsharp.

To reproduce this issue just add weights to LibSVMsharp.Examples.Classification:

            // Select the parameter set
            SVMParameter parameter = new SVMParameter();
            parameter.Type = SVMType.C_SVC;
            parameter.Kernel = SVMKernelType.RBF;
            parameter.C = 1;
            parameter.Gamma = 1;
            parameter.WeightLabels = new[] { 1, 2, 3 };
            parameter.Weights = new[] { 1.0, 2.0, 3.0 };

I think there is an extra call of SVMModel.Free in SVMModel.Allocate
Commenting this call resolves problem:

            // Allocate model.parameter
            IntPtr ptr_param = SVMParameter.Allocate(x.Parameter);
            y.param = (svm_parameter)Marshal.PtrToStructure(ptr_param, typeof(svm_parameter));
            // SVMParameter.Free(ptr_param);

from libsvmsharp.