Fix problem with tensors way

sample/sample.cc

@@ -1,7 +1,6 @@
 #include <iostream>
 #include <torch/torch.h>
 #include <string>
-#include <thread>
 #include <map>
 #include <argparse/argparse.hpp>
 #include "ArffFiles.h"
@@ -42,7 +41,7 @@ bool file_exists(const std::string& name)
 }
 pair<vector<vector<int>>, vector<int>> extract_indices(vector<int> indices, vector<vector<int>> X, vector<int> y)
 {
-    vector<vector<int>> Xr;
+    vector<vector<int>> Xr; // nxm
     vector<int> yr;
     for (int col = 0; col < X.size(); ++col) {
         Xr.push_back(vector<int>());
@@ -199,6 +198,7 @@ int main(int argc, char** argv)
             torch::Tensor Xtestt = torch::index_select(Xt, 1, ttest);
             torch::Tensor ytestt = yt.index({ ttest });
             clf->fit(Xtraint, ytraint, features, className, states);
+            auto temp = clf->predict(Xtraint);
             score_train = clf->score(Xtraint, ytraint);
             score_test = clf->score(Xtestt, ytestt);
         } else {